Merge branch 'release/v1.18.5'

* Set search conditions to query parameters

* Fixed by review

* Update query parameters when new message notified

.github/workflows/build-docker-edge.yml

@@ -0,0 +1,42 @@
+on:
+  push:
+    branches: [ develop ]
+
+name: Build docker edge images
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Log into Docker Hub
+      uses: docker/login-action@v3
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
+
+    - name: Log into GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.repository_owner }}
+        password: ${{ github.token }}
+
+    - name: Build and push
+      uses: docker/build-push-action@v5
+      with:
+        context: .
+        platforms: linux/386,linux/amd64,linux/arm64
+        build-args: |
+          "VERSION=edge-${{ github.sha }}"
+        push: true
+        tags: |
+          axllent/mailpit:edge
+          ghcr.io/${{ github.repository }}:edge

.github/workflows/build-docker.yml

@@ -8,20 +8,27 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up QEMU
-      uses: docker/setup-qemu-action@v2
+      uses: docker/setup-qemu-action@v3
 
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v2
+      uses: docker/setup-buildx-action@v3
 
-    - name: Login to DockerHub
-      uses: docker/login-action@v2
+    - name: Log into Docker Hub
+      uses: docker/login-action@v3
       with:
         username: ${{ secrets.DOCKER_USERNAME }}
         password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
 
+    - name: Log into GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.repository_owner }}
+        password: ${{ github.token }}
+
     - name: Parse semver
       id: semver_parser 
       uses: booxmedialtd/ws-action-parse-semver@v1.4.7
@@ -30,10 +37,9 @@ jobs:
         version_extractor_regex: 'v(.*)$'
 
     - name: Build and push
-      uses: docker/build-push-action@v4
+      uses: docker/build-push-action@v5
       with:
         context: .
-        # platforms: linux/386,linux/amd64,linux/arm,linux/arm64
         platforms: linux/386,linux/amd64,linux/arm64
         build-args: |
           "VERSION=${{ github.ref_name }}"
@@ -42,3 +48,6 @@ jobs:
           axllent/mailpit:latest
           axllent/mailpit:${{ github.ref_name }}
           axllent/mailpit:v${{ steps.semver_parser.outputs.major }}.${{ steps.semver_parser.outputs.minor }}
+          ghcr.io/${{ github.repository }}:latest
+          ghcr.io/${{ github.repository }}:${{ github.ref_name }}
+          ghcr.io/${{ github.repository }}:v${{ steps.semver_parser.outputs.major }}.${{ steps.semver_parser.outputs.minor }}

.github/workflows/close-stale-issues.yml

@@ -10,14 +10,14 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/stale@v8.0.0
+      - uses: actions/stale@v9.0.0
         with:
-          days-before-issue-stale: 21
-          days-before-issue-close: 7
+          days-before-issue-stale: 7
+          days-before-issue-close: 3
           exempt-issue-labels: "enhancement,bug,javascript,docker"
           stale-issue-label: "stale"
-          stale-issue-message: "This issue is stale because it has been open for 21 days with no activity."
-          close-issue-message: "This issue was closed because it has been inactive for 7 days since being marked as stale."
+          stale-issue-message: "This issue has been marked as stale because it has been open for 7 days with no activity."
+          close-issue-message: "This issue was closed because there has been no activity since being marked as stale."
           days-before-pr-stale: -1
           days-before-pr-close: -1
           repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/codeql-analysis.yml

@@ -38,11 +38,11 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
+      uses: github/codeql-action/init@v3
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -56,7 +56,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
+      uses: github/codeql-action/autobuild@v3
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
@@ -69,4 +69,4 @@ jobs:
     #   ./location_of_script_within_repo/buildscript.sh
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      uses: github/codeql-action/analyze@v3

.github/workflows/release-build.yml

@@ -5,7 +5,7 @@ on:
 name: Build & release
 jobs:
   releases-matrix:
-    name: Release Go Binary
+    name: Build
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -21,10 +21,10 @@ jobs:
           - goarch: arm
             goos: windows
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     # build the assets
-    - uses: actions/setup-node@v3
+    - uses: actions/setup-node@v4
       with:
         node-version: 18
         cache: 'npm'
@@ -33,7 +33,7 @@ jobs:
     - run: npm run package
 
     # build the binaries
-    - uses: wangyoucao577/go-release-action@v1.38
+    - uses: wangyoucao577/go-release-action@v1
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
         goos: ${{ matrix.goos }}

.github/workflows/tests.yml

@@ -1,22 +1,24 @@
 name: Tests
 on:
   pull_request:
-    branches: [ develop ]
+    branches: [ develop, 'feature/**' ]
   push:
     branches: [ develop, 'feature/**' ]
 jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.18.x]
-        os: [ubuntu-latest]
+        go-version: [1.21.x]
+        os: [ubuntu-latest, windows-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/setup-go@v4
+    - uses: actions/setup-go@v5
       with:
         go-version: ${{ matrix.go-version }}
-    - uses: actions/checkout@v3
-    - uses: actions/cache@v3
+        cache: false
+    - uses: actions/checkout@v4
+    - name: Run Go tests
+      uses: actions/cache@v4
       with:
         path: |
           ~/.cache/go-build
@@ -24,13 +26,24 @@ jobs:
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
         restore-keys: |
           ${{ runner.os }}-go-
-    - run: go test ./storage ./server -v
-    - run: go test ./storage -bench=.
+    - run: go test -p 1 ./internal/storage ./server ./internal/tools ./internal/html2text -v
+    - run: go test -p 1 ./internal/storage ./internal/html2text -bench=.
     
     # build the assets
-    - uses: actions/setup-node@v3
+    - name: Build web UI
+      if: startsWith(matrix.os, 'ubuntu') == true
+      uses: actions/setup-node@v4
       with:
         node-version: 18
         cache: 'npm'
-    - run: npm install
-    - run: npm run package
+    - if: startsWith(matrix.os, 'ubuntu') == true
+      run: npm install
+    - if: startsWith(matrix.os, 'ubuntu') == true
+      run: npm run package
+
+    # validate the swagger file
+    - name: Validate OpenAPI definition
+      if: startsWith(matrix.os, 'ubuntu') == true
+      uses: char0n/swagger-editor-validate@v1
+      with:
+        definition-file: server/ui/api/v1/swagger.json

.gitignore

@@ -4,5 +4,6 @@
 /server/ui/dist
 /Makefile
 /mailpit*
+/.idea
 *.old
 *.db

CHANGELOG.md

@@ -2,6 +2,701 @@
 
 Notable changes to Mailpit will be documented in this file.
 
+## [v1.18.5]
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+
+### Feature
+- Add pagination & limits to URL parameters ([#303](https://github.com/axllent/mailpit/issues/303))
+
+
+## [v1.18.4]
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+- Clone new Docker images to ghcr.io ([#302](https://github.com/axllent/mailpit/issues/302))
+
+
+## [v1.18.3]
+
+### Chore
+- Update Go dependencies
+- Update node dependencies
+
+### Feature
+- iCalendar (ICS) viewer ([#298](https://github.com/axllent/mailpit/issues/298))
+
+### Fix
+- Add dot stuffing for POP3 ([#300](https://github.com/axllent/mailpit/issues/300))
+
+
+## [v1.18.2]
+
+### Chore
+- Update node dependencies
+
+### Fix
+- Replace invalid Windows username characters in sendmail ([#294](https://github.com/axllent/mailpit/issues/294))
+
+
+## [v1.18.1]
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+- Simplify JSON HTTP responses
+
+### Feature
+- Return queued Message ID in SMTP response ([#293](https://github.com/axllent/mailpit/issues/293))
+
+
+## [v1.18.0]
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+- Update go-release-action
+- JSON key case-consistency for posted API data (backwards-compatible)
+- Remove function duplication - use common tools.InArray()
+- Improve tag sorting in web UI, ignore casing
+- Replace moment JS library with dayjs
+- Auto-update relative received message times
+
+### Feature
+- API endpoint for sending ([#278](https://github.com/axllent/mailpit/issues/278))
+- Set tagging filters via a config file
+- Search filter support for auto-tagging
+- New search filter prefix `addressed:` includes From, To, Cc, Bcc & Reply-To
+
+
+## [v1.17.1]
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+- Clearer error messages for read/write permission failures ([#281](https://github.com/axllent/mailpit/issues/281))
+
+### Fix
+- Prevent error when two identical tags are added at the exact same time ([#283](https://github.com/axllent/mailpit/issues/283))
+
+
+## [v1.17.0]
+
+### Chore
+- Update caniemail database
+- Update node dependencies
+- Update Go dependencies
+- Auto-rotate thumbnail images based on exif data
+- Replace disintegration/imaging with kovidgoyal/imaging to fix CVE-2023-36308
+- Update API documentation regarding date/time searches & timezones
+- Move Link check & HTML check features out of beta
+- Remove deprecated --disable-html-check option
+
+### Feature
+- Option to auto relay for matching recipient expression only ([#274](https://github.com/axllent/mailpit/issues/274))
+- Add UI settings screen
+
+### Fix
+- Add delay to close database on fatal exit ([#280](https://github.com/axllent/mailpit/issues/280))
+
+
+## [v1.16.0]
+
+### Chore
+- Update caniemail test database
+- Update node dependencies
+- Update Go dependencies
+- Switch database flag/env to `--database` / `MP_DATABASE`
+
+### Feature
+- Search support for before: and after: dates ([#252](https://github.com/axllent/mailpit/issues/252))
+- Add optional tenant ID to isolate data in shared databases ([#254](https://github.com/axllent/mailpit/issues/254))
+- Option to use rqlite database storage ([#254](https://github.com/axllent/mailpit/issues/254))
+
+### Fix
+- Remove duplicated authentication check ([#276](https://github.com/axllent/mailpit/issues/276))
+- Prevent conditional JS error when global mailbox tag list is modified via auto/plus-address tagging while viewing a message
+- Extract plus addresses from email addresses only, not names
+
+
+## [v1.15.1]
+
+### Chore
+- Code cleanup, remove redundant functionality
+- Add labels to Docker image ([#267](https://github.com/axllent/mailpit/issues/267))
+
+### Feature
+- Add readyz subcommand for Docker healthcheck ([#270](https://github.com/axllent/mailpit/issues/270))
+
+
+## [v1.15.0]
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+
+### Feature
+- Add SMTP TLS option ([#265](https://github.com/axllent/mailpit/issues/265))
+
+### Fix
+- Enforce SMTP STARTTLS by default if authentication is set
+
+
+## [v1.14.4]
+
+### Chore
+- Update caniemail test data
+- Reorder CLI flags to group by related functionality
+
+### Feature
+- Allow setting SMTP relay configuration values via environment variables ([#262](https://github.com/axllent/mailpit/issues/262))
+
+
+## [v1.14.3]
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+
+### Fix
+- Prevent crash when calculating deleted space percentage (divide by zero)
+
+
+## [v1.14.2]
+
+### Chore
+- Allow setting of multiple message tags via plus addresses ([#253](https://github.com/axllent/mailpit/issues/253))
+
+### Fix
+- Prevent runtime error when calculating total messages size of empty table ([#263](https://github.com/axllent/mailpit/issues/263))
+
+
+## [v1.14.1]
+
+### Chore
+- Tag names now allow `.` and must be a minimum of 1 character
+- Update node dependencies
+- Update Go dependencies
+
+### Feature
+- Option to enforce TitleCasing for all newly created tags
+- Set message tags using plus addressing ([#253](https://github.com/axllent/mailpit/issues/253))
+
+### Fix
+- Handle null values in Mailpit settings, set DeletedSize=0 if null
+
+
+## [v1.14.0]
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+- Refactor storage library
+- Security improvements (gosec)
+- Switch to short uuid format for database IDs
+- Better handling of automatic database compression (vacuuming) after deleting messages
+
+### Docker
+- Add edge Docker images for latest unreleased features
+
+### Feature
+- Optional POP3 server ([#249](https://github.com/axllent/mailpit/issues/249))
+
+
+## [v1.13.3]
+
+### API
+- Include Reply-To information in message summaries for message list & websocket events
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+- Compress database only when >= 1% of total message size has been deleted
+- Update "About" modal layout when new version is available
+
+### Feature
+- Add reply-to:<search> search filter ([#247](https://github.com/axllent/mailpit/issues/247))
+
+
+## [v1.13.2]
+
+### Chore
+- Update caniemail data
+- Update node modules
+- Update Go modules
+- Bump actions build requirement versions
+- Update esbuild
+
+### Feature
+- Add option to log output to file ([#246](https://github.com/axllent/mailpit/issues/246))
+
+
+## [v1.13.1]
+
+### Chore
+- Update node dependencies
+- Update Go dependencies
+
+### Feature
+- Add TLSRequired option for smtpd ([#241](https://github.com/axllent/mailpit/issues/241))
+
+### Fix
+- Workaround for specific field searches containing unicode characters ([#239](https://github.com/axllent/mailpit/issues/239))
+
+### UI
+- Only show number of messages ignored statistics if `--ignore-duplicate-ids` is set
+
+
+## [v1.13.0]
+
+### Chore
+- Compress compiled assets with `npm run build`
+- Update Go modules
+- Update node modules
+
+### Feature
+- Add option to disable SMTP reverse DNS (rDNS) lookup ([#230](https://github.com/axllent/mailpit/issues/230))
+- Display List-Unsubscribe & List-Unsubscribe-Post header info with syntax validation ([#236](https://github.com/axllent/mailpit/issues/236))
+- Add optional SpamAssassin integration to display scores ([#233](https://github.com/axllent/mailpit/issues/233))
+
+### Fix
+- Display multiple whitespace characters in message subject & recipient names ([#238](https://github.com/axllent/mailpit/issues/238))
+- Sendmail support for `-f 'Name <email[@example](https://github.com/example).com>'` format
+
+
+## [v1.12.1]
+
+### Chore
+- Significantly increase database performance using WAL (Write-Ahead-Log)
+- Standardize error logging & formatting
+
+### Feature
+- Add option to only allow SMTP recipients matching a regular expression (disable open-relay behaviour [#219](https://github.com/axllent/mailpit/issues/219))
+
+### Fix
+- Log total deleted messages when auto-pruning messages (--max)
+- Prevent rare error from websocket connection (unexpected non-whitespace character)
+- Log total deleted messages when deleting all messages from search
+
+### Libs
+- Update node modules
+
+### Tests
+- Run tests on Linux, Windows & Mac
+
+### UI
+- Automatically refresh connected browsers if Mailpit is upgraded (version change)
+
+
+## [v1.12.0]
+
+### Chore
+- Include runtime statistics in API (info) & UI (About)
+- Use memory pointer for internal message parsing & storage
+- Update caniemail test data
+- Convert to many-to-many message tag relationships
+- Standardize error logging & formatting
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### UI
+- Refresh search results when search resubmitted or active tag filter clicked
+
+
+## [v1.11.1]
+
+### Fix
+- Fix regression to support for search query params to all `/latest` endpoints ([#206](https://github.com/axllent/mailpit/issues/206))
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### Testing
+- Add new `ingest` subcommand to import an email file or maildir folder over SMTP
+
+### UI
+- Allow multiple tags  to be searched using Ctrl-click ([#216](https://github.com/axllent/mailpit/issues/216))
+
+
+## [v1.11.0]
+
+### API
+- Allow ID "latest" for message summary, headers, raw version & HTML/link checks
+
+### Feature
+- Add configuration option to set maximum SMTP recipients ([#205](https://github.com/axllent/mailpit/issues/205))
+
+### Libs
+- Update node modules
+- Update Go modules
+
+
+## [v1.10.4]
+
+### Fix
+- Remove JS debug information for favicon
+
+
+## [v1.10.3]
+
+### Chore
+- Update caniemail library & add `hr` element test
+
+### Feature
+- Add @ as valid character for webroot ([#215](https://github.com/axllent/mailpit/issues/215))
+
+### Fix
+- New favicon notification badge to fix rendering issues ([#210](https://github.com/axllent/mailpit/issues/210))
+
+### Libs
+- Update node modules
+- Update Go modules
+
+
+## [v1.10.2]
+
+### Chore
+- Add favicon fallback font (sans-serif) for unread count
+- Clearer log messages for bound SMTP & HTTP addresses
+
+### Feature
+- Allow port binding using hostname
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### UI
+- Enable tag colors by default
+
+
+## [v1.10.1]
+
+### Chore
+- Use NextReader() instead of ReadMessage() for websocket reading ([#207](https://github.com/axllent/mailpit/issues/207))
+
+### Fix
+- Prevent JavaScript error if message is missing `From` header ([#209](https://github.com/axllent/mailpit/issues/209))
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### Swagger
+- Revert BinaryResponse type to string
+
+
+## [v1.10.0]
+
+### Feature
+- Support search query params to /latest endpoints ([#206](https://github.com/axllent/mailpit/issues/206))
+- Option to allow untrusted HTTPS certificates for screenshots & link checking ([#204](https://github.com/axllent/mailpit/issues/204))
+- Add URL redirect (`/view/latest`) to view latest message in web UI ([#166](https://github.com/axllent/mailpit/issues/166))
+
+### Fix
+- Correctly close websockets on client disconnect ([#207](https://github.com/axllent/mailpit/issues/207))
+
+### Libs
+- Update node modules
+- Update Go modules
+
+
+## [v1.9.10]
+
+### Docs
+- Update documentation links
+
+### Fix
+- Correctly display "About" modal when update check fails (resolves [#199](https://github.com/axllent/mailpit/issues/199))
+
+### Libs
+- Update node modules
+- Update Go modules
+- Update caniemail test data
+
+### UI
+- Fix column width in search view
+
+
+## [v1.9.9]
+
+### Chore
+- Move html2text module to internal/html2text
+
+### Feature
+- Set optional webhook for received messages ([#195](https://github.com/axllent/mailpit/issues/195))
+- Reset message date on release ([#194](https://github.com/axllent/mailpit/issues/194))
+
+### Libs
+- update node modules
+- Update Go modules
+
+
+## [v1.9.8]
+
+### Chore
+- Replace satori/go.uuid with github.com/google/uuid ([#190](https://github.com/axllent/mailpit/issues/190))
+- Replace html2text modules with simplified internal function
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### Swagger
+- Update swagger documentation
+
+### Tests
+- Add test to validate swagger.json
+- Add html2text tests
+
+
+## [v1.9.7]
+
+### Fix
+- Enable delete button when new messages arrive
+
+### Libs
+- Update node modules
+- Downgrade microcosm-cc/bluemonday, revert to Go 1.20
+- Update Go modules & minimum Go version (1.21)
+
+
+## [v1.9.6]
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### UI
+- Display message previews on separate line ([#175](https://github.com/axllent/mailpit/issues/175))
+
+
+## [v1.9.5]
+
+### Feature
+- Add `reindex` subcommand to reindex all messages
+- Display email previews ([#175](https://github.com/axllent/mailpit/issues/175))
+
+### Fix
+- HTML message preview background color when switching themes in Chrome
+- Correctly detect tags in search (UI)
+
+### Tests
+- Add message summary tests
+- Add snippet tests
+
+
+## [v1.9.4]
+
+### Chore
+- Remove some flags deprecated 08/2022
+
+### Feature
+- Set auth credentials directly from environment variables
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### UI
+- Add option to delete a message after release
+
+
+## [v1.9.3]
+
+### Chore
+- Update internal/storage import paths
+- Move storage package to internal/storage
+- Update internal import paths
+- Move utils/* packages to internal/*
+
+### Testing
+- Add endpoints for integration tests
+
+### Tests
+- Add more API tests
+- Add tests for ArgsParser & CleanTag
+
+### UI
+- Do not show excluded search tags as "current" in nav
+- Display "Loading messages" instead of "No results" while loading results
+- Only queue broadcast events if clients are connected
+
+
+## [v1.9.2]
+
+### Fix
+- Delete all messages matching search when more than 1000 results
+
+### Libs
+- Update node modules
+
+### Tests
+- Add message tag tests
+- Add search delete tests
+
+### UI
+- Reset pagination when returning to inbox from search
+
+
+## [v1.9.1]
+
+### Chore
+- Update caniemail data
+
+### Libs
+- Update Go modules
+
+### UI
+- Set 404 page when loading a non-existent message
+- Link email addresses in message summary to search
+- Better support for mobile screen sizes
+
+
+## [v1.9.0]
+
+### API
+- Remove redundant `Read` status from message (always true)
+- Delete by search filter
+- Add endpoint to return all tags in use
+
+### Feature
+- Improved search parser
+- New search filter `[!]is:tagged`
+
+### Fix
+- Correctly escape certain characters in search (eg: `'`)
+
+### Libs
+- Update minimum Go version to 1.20
+- Update Go modules
+- Update node modules
+
+### Tests
+- Bump Go version to 1.21
+
+### UI
+- Rewrite web UI, add URL routing and components
+
+
+## [v1.8.4]
+
+### Fix
+- Correctly decode proxy links containing HTML entities (screenshots)
+
+
+## [v1.8.3]
+
+### Feature
+- HTML screenshots
+
+### Libs
+- Update node modules
+
+### UI
+- Group message tabs on mobile
+
+
+## [v1.8.2]
+
+### Build
+- Update wangyoucao577/go-release-action[@v1](https://github.com/v1).39
+
+### Feature
+- Link check to test message links
+- Workaround for non-RFC-compliant message headers containing <CR><CR><LF>
+
+### Libs
+- Update Go libs
+
+### UI
+- Set hostname in page meta title to identify Mailpit instance
+
+
+## [v1.8.1]
+
+### Docs
+- Add pagination to swagger search documentation
+
+### Fix
+- Check/set message Reply-To using SMTP FROM
+- Exclude "sendmail" from recipients list when using `mailpit sendmail <options>`
+- Exclude <script type="application/json"> from HTML check tests
+
+### Libs
+- Update node modules
+- Update Go modules
+
+
+## [v1.8.0]
+
+### Docs
+- Update brew installation instructions
+
+### Feature
+- HTML check to test & score mail client compatibility with HTML emails
+
+### Fix
+- Add basePath to swagger.json if webroot is specified
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### Swagger
+- Update swagger docs
+
+### UI
+- Add flag to block all access to remote CSS and fonts (CSP)
+- Remove `<base />` tag if set in HTML preview
+- Pagination support for search, all results
+
+
+## [v1.7.1]
+
+### Libs
+- Update Go modules
+- Update node modules
+
+### UI
+- Wrap HTML source lines
+- Dark mode color adjustments
+- Update dark mode loading background color
+
+
+## [v1.7.0]
+
+### API
+- Ignore SMTP relay error when one of multiple recipients doesn't exist
+- Set raw message Content-Type to UTF-8
+
+### Build
+- Define Vue build options in esbuild
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### UI
+- Theme toggler - auto, light and dark themes
+
+
+## [v1.6.22]
+
+### Feature
+- Clearer SMTP error messages
+
+### Libs
+- Update Go modules
+- Upgrade node modules
+
+
 ## [v1.6.21]
 
 ### UI

Dockerfile

@@ -12,10 +12,19 @@ CGO_ENABLED=0 go build -ldflags "-s -w -X github.com/axllent/mailpit/config.Vers
 
 FROM alpine:latest
 
+LABEL org.opencontainers.image.title="Mailpit" \
+  org.opencontainers.image.description="An email and SMTP testing tool with API for developers" \
+  org.opencontainers.image.source="https://github.com/axllent/mailpit" \
+  org.opencontainers.image.url="https://mailpit.axllent.org" \
+  org.opencontainers.image.documentation="https://mailpit.axllent.org/docs/" \
+  org.opencontainers.image.licenses="MIT"
+
 COPY --from=builder /mailpit /mailpit
 
 RUN apk add --no-cache tzdata
 
-EXPOSE 1025/tcp 8025/tcp
+EXPOSE 1025/tcp 1110/tcp 8025/tcp
+
+HEALTHCHECK --interval=15s CMD /mailpit readyz
 
 ENTRYPOINT ["/mailpit"]

README.md

@@ -1,51 +1,69 @@
-# Mailpit - email testing for developers
+<h1 align="center">
+  Mailpit - email testing for developers
+</h1>
 
-![Tests](https://github.com/axllent/mailpit/actions/workflows/tests.yml/badge.svg)
-![Build status](https://github.com/axllent/mailpit/actions/workflows/release-build.yml/badge.svg)
-![Docker builds](https://github.com/axllent/mailpit/actions/workflows/build-docker.yml/badge.svg)
-![CodeQL](https://github.com/axllent/mailpit/actions/workflows/codeql-analysis.yml/badge.svg)
-[![Go Report Card](https://goreportcard.com/badge/github.com/axllent/mailpit)](https://goreportcard.com/report/github.com/axllent/mailpit)
+<div align="center">
+    <a href="https://github.com/axllent/mailpit/actions/workflows/tests.yml"><img src="https://github.com/axllent/mailpit/actions/workflows/tests.yml/badge.svg" alt="CI Tests status"></a>
+    <a href="https://github.com/axllent/mailpit/actions/workflows/release-build.yml"><img src="https://github.com/axllent/mailpit/actions/workflows/release-build.yml/badge.svg" alt="CI build status"></a>
+    <a href="https://github.com/axllent/mailpit/actions/workflows/build-docker.yml"><img src="https://github.com/axllent/mailpit/actions/workflows/build-docker.yml/badge.svg" alt="CI Docker build status"></a>
+    <a href="https://github.com/axllent/mailpit/actions/workflows/codeql-analysis.yml"><img src="https://github.com/axllent/mailpit/actions/workflows/codeql-analysis.yml/badge.svg" alt="Code quality"></a>
+    <a href="https://goreportcard.com/report/github.com/axllent/mailpit"><img src="https://goreportcard.com/badge/github.com/axllent/mailpit" alt="Go Report Card"></a>
+    <br>
+    <a href="https://github.com/axllent/mailpit/releases/latest"><img src="https://img.shields.io/github/v/release/axllent/mailpit.svg" alt="Latest release"></a>
+    <a href="https://hub.docker.com/r/axllent/mailpit"><img src="https://img.shields.io/docker/pulls/axllent/mailpit.svg" alt="Docker pulls"></a>
+</div>
+<br>
+<p align="center">
+  <a href="https://mailpit.axllent.org">Website</a>  •
+  <a href="https://mailpit.axllent.org/docs/">Documentation</a>  •
+  <a href="https://mailpit.axllent.org/docs/api-v1/">API</a>
+</p>
 
-Mailpit is a multi-platform email testing tool & API for developers.
+<hr>
 
-It acts as both an SMTP server, and provides a web interface to view all captured emails.
+**Mailpit** is a small, fast, low memory, zero-dependency, multi-platform email testing tool & API for developers.
 
-Mailpit is inspired by [MailHog](#why-rewrite-mailhog), but much, much faster.
+It acts as an SMTP server, provides a modern web interface to view & test captured emails, and includes an API for automated integration testing.
 
-![Mailpit](https://raw.githubusercontent.com/axllent/mailpit/develop/docs/screenshot.png)
+Mailpit was originally **inspired** by MailHog which is [no longer maintained](https://github.com/mailhog/MailHog/issues/442#issuecomment-1493415258) and hasn't seen active development or security updates for a few years now.
+
+![Mailpit](https://raw.githubusercontent.com/axllent/mailpit/develop/server/ui-src/screenshot.png)
 
 
 ## Features
 
-- Runs entirely from a single binary, no installation required
-- SMTP server (default `0.0.0.0:1025`)
-- Web UI to view emails (formatted HTML, highlighted HTML source, text, headers, raw source and MIME attachments including image thumbnails)
+- Runs entirely from a single [static binary](https://mailpit.axllent.org/docs/install/) or multi-architecture [Docker images](https://mailpit.axllent.org/docs/install/docker/)
+- Modern web UI with advanced [mail search](https://mailpit.axllent.org/docs/usage/search-filters/) to view emails (formatted HTML, highlighted HTML source, text, headers, raw source, and MIME attachments
+including image thumbnails), including optional [HTTPS](https://mailpit.axllent.org/docs/configuration/http/) & [authentication](https://mailpit.axllent.org/docs/configuration/http/)
+- [SMTP server](https://mailpit.axllent.org/docs/configuration/smtp/) with optional STARTTLS or SSL/TLS, authentication (including an "accept any" mode)
+- A [REST API](https://mailpit.axllent.org/docs/api-v1/) for integration testing
+- Real-time web UI updates using web sockets for new mail & optional [browser notifications](https://mailpit.axllent.org/docs/usage/notifications/) when new mail is received
+- Optional [POP3 server](https://mailpit.axllent.org/docs/configuration/pop3/) to download captured message directly into your email client
+- [HTML check](https://mailpit.axllent.org/docs/usage/html-check/) to test & score mail client compatibility with HTML emails
+- [Link check](https://mailpit.axllent.org/docs/usage/link-check/) to test message links (HTML & text) & linked images
+- [Spam check](https://mailpit.axllent.org/docs/usage/spamassassin/) to test message "spamminess" using a running SpamAssassin server
+- [Create screenshots](https://mailpit.axllent.org/docs/usage/html-screenshots/) of HTML messages via web UI
 - Mobile and tablet HTML preview toggle in desktop mode
-- Advanced mail search ([see wiki](https://github.com/axllent/mailpit/wiki/Mail-search))
-- Message tagging ([see wiki](https://github.com/axllent/mailpit/wiki/Tagging))
-- Real-time web UI updates using web sockets for new mail
-- Optional browser notifications for new mail (HTTPS and `localhost` only)
-- Configurable automatic email pruning (default keeps the most recent 500 emails)
-- Email storage either in a temporary or persistent database ([see wiki](https://github.com/axllent/mailpit/wiki/Email-storage))
-- Fast SMTP processing & storing - approximately 70-100 emails per second depending on CPU, network speed & email size, easily handling tens of thousands of emails
-- SMTP relaying / message release - relay messages via a different SMTP server including an optional allowlist of accepted recipients ([see wiki](https://github.com/axllent/mailpit/wiki/SMTP-relay))
-- Optional SMTP with STARTTLS & SMTP authentication, including an "accept anything" mode ([see wiki](https://github.com/axllent/mailpit/wiki/SMTP-with-STARTTLS-and-authentication))
-- Optional HTTPS for web UI ([see wiki](https://github.com/axllent/mailpit/wiki/HTTPS))
-- Optional basic authentication for web UI ([see wiki](https://github.com/axllent/mailpit/wiki/Basic-authentication))
-- A simple REST API ([see docs](docs/apiv1/README.md))
-- Multi-architecture [Docker images](https://github.com/axllent/mailpit/wiki/Docker-images)
+- [Message tagging](https://mailpit.axllent.org/docs/usage/tagging/) including manual tagging or automated tagging using filtering and "plus addressing"
+- [SMTP relaying](https://mailpit.axllent.org/docs/configuration/smtp-relay/) (message release) - relay messages via a different SMTP server including an optional allowlist of accepted recipients
+- Fast message [storing & processing](https://mailpit.axllent.org/docs/configuration/email-storage/) - ingesting 100-200 emails per second over SMTP depending on CPU, network speed & email size,
+easily handling tens of thousands of emails, with automatic email pruning (by default keeping the most recent 500 emails)
+- `List-Unsubscribe` syntax validation
+- Optional [webhook](https://mailpit.axllent.org/docs/integration/webhook/) for received messages
 
 
 ## Installation
 
-The Mailpit web UI listens by default on `http://0.0.0.0:8025`, and the SMTP port on `0.0.0.0:1025`.
+The Mailpit web UI listens by default on `http://0.0.0.0:8025` and the SMTP port on `0.0.0.0:1025`.
 
 Mailpit runs as a single binary and can be installed in different ways:
 
 
-### Install via Brew (Mac)
+### Install via package managers
 
-Add the repository to your taps with `brew tap axllent/apps`, and then install Mailpit with `brew install mailpit`.
+- **Mac**: `brew install mailpit` (to run automatically in the background: `brew services start mailpit`)
+- **Arch Linux**: available in the AUR as `mailpit`
+- **FreeBSD**: `pkg install mailpit`
 
 
 ### Install via bash script (Linux & Mac)
@@ -59,33 +77,33 @@ sudo bash < <(curl -sL https://raw.githubusercontent.com/axllent/mailpit/develop
 
 ### Download static binary (Windows, Linux and Mac)
 
-Static binaries can always be found on the [releases](https://github.com/axllent/mailpit/releases/latest). The `mailpit` binary can extracted and copied to your `$PATH`, or simply run as `./mailpit`.
+Static binaries can always be found on the [releases](https://github.com/axllent/mailpit/releases/latest). The `mailpit` binary can be extracted and copied to your `$PATH`, or simply run as `./mailpit`.
 
 
 ### Docker
 
-See [Docker instructions](https://github.com/axllent/mailpit/wiki/Docker-images).
+See [Docker instructions](https://mailpit.axllent.org/docs/install/docker/) for 386, amd64 & arm64 images.
 
 
 ### Compile from source
 
-To build Mailpit from source see [building from source](https://github.com/axllent/mailpit/wiki/Building-from-source).
+To build Mailpit from source, see [Building from source](https://mailpit.axllent.org/docs/install/source/).
+
+
+## Usage
+
+Run `mailpit -h` to see options. More information can be seen in [the docs](https://mailpit.axllent.org/docs/configuration/runtime-options/).
+
+If installed using homebrew, you may run `brew services start mailpit` to always run mailpit automatically.
 
 
 ### Testing Mailpit
 
-Please refer to [the documentation](https://github.com/axllent/mailpit/wiki/Testing-Mailpit) of how to easily test email delivery to Mailpit.
+Please refer to [the documentation](https://mailpit.axllent.org/docs/install/testing/) on how to easily test email delivery to Mailpit.
 
 
 ### Configuring sendmail
 
-Mailpit's SMTP server (by default on port 1025), so you will likely need to configure your sending application to deliver mail via that port. A common MTA (Mail Transfer Agent) that delivers system emails to a SMTP server is `sendmail`, used by many applications including PHP. Mailpit can also act as substitute for sendmail. For instructions of how to set this up, please refer to the [sendmail documentation](https://github.com/axllent/mailpit/wiki/Configuring-sendmail).
-
-
-## Why rewrite MailHog?
-
-I had been using MailHog for a few years to intercept and test emails generated from several projects. MailHog has a number of performance issues, many of the frontend and Go modules are horribly out of date, and it is not actively developed.
-
-Initially I tried to upgrade a fork of MailHog (both the UI as well as the HTTP server & API), but soon discovered that it is (with all due respect to its authors) poorly designed. It is in my opinion over-engineered (split over 9 separate projects), and performs very poorly when dealing with large amounts of emails or processing emails with an attachments (a single email with a 3MB attachment can take over a minute to ingest). Finally, the API transmits a lot of duplicate and unnecessary data on every browser request, and there is no HTTP compression.
-
-In order to improve it I felt it needed to be completely rewritten, and so Mailpit was born.
+Mailpit's SMTP server (default on port 1025), so you will likely need to configure your sending application to deliver mail via that port. 
+A common MTA (Mail Transfer Agent) that delivers system emails to an SMTP server is `sendmail`, used by many applications, including PHP. 
+Mailpit can also act as substitute for sendmail. For instructions on how to set this up, please refer to the [sendmail documentation](https://mailpit.axllent.org/docs/install/sendmail/).

cmd/ingest.go

@@ -0,0 +1,151 @@
+package cmd
+
+import (
+	"bytes"
+	"io"
+	"net/mail"
+	"net/smtp"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/axllent/mailpit/internal/logger"
+	sendmail "github.com/axllent/mailpit/sendmail/cmd"
+	"github.com/spf13/cobra"
+	"golang.org/x/text/language"
+	"golang.org/x/text/message"
+)
+
+var (
+	ingestRecent int
+)
+
+// ingestCmd represents the ingest command
+var ingestCmd = &cobra.Command{
+	Use:   "ingest <file|folder> ...[file|folder]",
+	Short: "Ingest a file or folder of emails for testing",
+	Long: `Ingest a file or folder of emails for testing.
+
+This command will scan the folder for emails and deliver them via SMTP to a running 
+Mailpit server. Each email must be a separate file (eg: Maildir format, not mbox).
+The --recent flag will only consider files with a modification date within the last X days.`,
+	// Hidden: true,
+	Args: cobra.MinimumNArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		var count int
+		var total int
+		var per100start = time.Now()
+		p := message.NewPrinter(language.English)
+
+		for _, a := range args {
+			err := filepath.Walk(a,
+				func(path string, info os.FileInfo, err error) error {
+					if err != nil {
+						logger.Log().Error(err)
+						return nil
+					}
+					if !isFile(path) {
+						return nil
+					}
+
+					if ingestRecent > 0 && time.Since(info.ModTime()) > time.Duration(ingestRecent)*24*time.Hour {
+						return nil
+					}
+
+					f, err := os.Open(filepath.Clean(path))
+					if err != nil {
+						logger.Log().Errorf("%s: %s", path, err.Error())
+						return nil
+					}
+					defer f.Close() // #nosec
+
+					body, err := io.ReadAll(f)
+					if err != nil {
+						logger.Log().Errorf("%s: %s", path, err.Error())
+						return nil
+					}
+
+					msg, err := mail.ReadMessage(bytes.NewReader(body))
+					if err != nil {
+						logger.Log().Errorf("error parsing message body: %s", err.Error())
+						return nil
+					}
+
+					recipients := []string{}
+					// get all recipients in To, Cc and Bcc
+					if to, err := msg.Header.AddressList("To"); err == nil {
+						for _, a := range to {
+							recipients = append(recipients, a.Address)
+						}
+					}
+					if cc, err := msg.Header.AddressList("Cc"); err == nil {
+						for _, a := range cc {
+							recipients = append(recipients, a.Address)
+						}
+					}
+					if bcc, err := msg.Header.AddressList("Bcc"); err == nil {
+						for _, a := range bcc {
+							recipients = append(recipients, a.Address)
+						}
+					}
+
+					if sendmail.FromAddr == "" {
+						if fromAddresses, err := msg.Header.AddressList("From"); err == nil {
+							sendmail.FromAddr = fromAddresses[0].Address
+						}
+					}
+
+					if len(recipients) == 0 {
+						// Bcc
+						recipients = []string{sendmail.FromAddr}
+					}
+
+					returnPath := strings.Trim(msg.Header.Get("Return-Path"), "<>")
+					if returnPath == "" {
+						if fromAddresses, err := msg.Header.AddressList("From"); err == nil {
+							returnPath = fromAddresses[0].Address
+						}
+					}
+
+					err = smtp.SendMail(sendmail.SMTPAddr, nil, returnPath, recipients, body)
+					if err != nil {
+						logger.Log().Errorf("error sending mail: %s (%s)", err.Error(), path)
+						return nil
+					}
+
+					count++
+					total++
+					if count%100 == 0 {
+						formatted := p.Sprintf("%d", total)
+						logger.Log().Infof("[%s] 100 messages in %s", formatted, time.Since(per100start))
+
+						per100start = time.Now()
+					}
+
+					return nil
+				})
+			if err != nil {
+				logger.Log().Error(err)
+			}
+		}
+
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(ingestCmd)
+
+	ingestCmd.Flags().StringVarP(&sendmail.SMTPAddr, "smtp-addr", "S", sendmail.SMTPAddr, "SMTP server address")
+	ingestCmd.Flags().IntVarP(&ingestRecent, "recent", "r", 0, "Only ingest messages from the last X days (default all)")
+}
+
+// IsFile returns if a path is a file
+func isFile(path string) bool {
+	info, err := os.Stat(path)
+	if os.IsNotExist(err) || !info.Mode().IsRegular() {
+		return false
+	}
+
+	return true
+}

cmd/readyz.go

@@ -0,0 +1,76 @@
+package cmd
+
+import (
+	"crypto/tls"
+	"fmt"
+	"net/http"
+	"os"
+	"path"
+	"strings"
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/spf13/cobra"
+)
+
+var (
+	useHTTPS bool
+)
+
+// readyzCmd represents the healthcheck command
+var readyzCmd = &cobra.Command{
+	Use:   "readyz",
+	Short: "Run a healthcheck to test if Mailpit is running",
+	Long: `This command connects to the /readyz endpoint of a running Mailpit server
+and exits with a status of 0 if the connection is successful, else with a 
+status 1 if unhealthy.
+
+If running within Docker, it should automatically detect environment
+settings to determine the HTTP bind interface & port.
+`,
+	Run: func(cmd *cobra.Command, args []string) {
+		webroot := strings.TrimRight(path.Join("/", config.Webroot, "/"), "/") + "/"
+		proto := "http"
+		if useHTTPS {
+			proto = "https"
+		}
+
+		uri := fmt.Sprintf("%s://%s%sreadyz", proto, config.HTTPListen, webroot)
+
+		conf := &http.Transport{
+			IdleConnTimeout:       time.Second * 5,
+			ExpectContinueTimeout: time.Second * 5,
+			TLSHandshakeTimeout:   time.Second * 5,
+			// do not verify TLS in case this instance is using HTTPS
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: true}, // #nosec
+		}
+		client := &http.Client{Transport: conf}
+
+		res, err := client.Get(uri)
+		if err != nil || res.StatusCode != 200 {
+			os.Exit(1)
+		}
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(readyzCmd)
+
+	if len(os.Getenv("MP_UI_BIND_ADDR")) > 0 {
+		config.HTTPListen = os.Getenv("MP_UI_BIND_ADDR")
+	}
+
+	if len(os.Getenv("MP_WEBROOT")) > 0 {
+		config.Webroot = os.Getenv("MP_WEBROOT")
+	}
+
+	config.UITLSCert = os.Getenv("MP_UI_TLS_CERT")
+
+	if config.UITLSCert != "" {
+		useHTTPS = true
+	}
+
+	readyzCmd.Flags().StringVarP(&config.HTTPListen, "listen", "l", config.HTTPListen, "Set the HTTP bind interface & port")
+	readyzCmd.Flags().StringVar(&config.Webroot, "webroot", config.Webroot, "Set the webroot for web UI & API")
+	readyzCmd.Flags().BoolVar(&useHTTPS, "https", useHTTPS, "Connect via HTTPS (ignores HTTPS validation)")
+}

cmd/reindex.go

@@ -0,0 +1,36 @@
+package cmd
+
+import (
+	"os"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/storage"
+	"github.com/spf13/cobra"
+)
+
+// reindexCmd represents the reindex command
+var reindexCmd = &cobra.Command{
+	Use:   "reindex <database>",
+	Short: "Reindex the database",
+	Long: `This will reindex all messages in the entire database.
+
+If you have several thousand messages in your mailbox, then it is advised to shut down
+Mailpit while you reindex as this process will likely result in database locking issues.`,
+	Args: cobra.ExactArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		config.Database = args[0]
+		config.MaxMessages = 0
+
+		if err := storage.InitDB(); err != nil {
+			logger.Log().Error(err)
+			os.Exit(1)
+		}
+
+		storage.ReindexAll()
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(reindexCmd)
+}

cmd/root.go

@@ -2,21 +2,21 @@
 package cmd
 
 import (
-	"fmt"
 	"os"
 	"strconv"
 	"strings"
 
 	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/auth"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/storage"
+	"github.com/axllent/mailpit/internal/tools"
 	"github.com/axllent/mailpit/server"
 	"github.com/axllent/mailpit/server/smtpd"
-	"github.com/axllent/mailpit/storage"
-	"github.com/axllent/mailpit/utils/logger"
+	"github.com/axllent/mailpit/server/webhook"
 	"github.com/spf13/cobra"
 )
 
-var cfgFile string
-
 // rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
 	Use:   "mailpit",
@@ -27,21 +27,22 @@ It acts as an SMTP server, and provides a web interface to view all captured ema
 
 Documentation:
   https://github.com/axllent/mailpit
-  https://github.com/axllent/mailpit/wiki`,
+  https://mailpit.axllent.org/docs/`,
 	Run: func(_ *cobra.Command, _ []string) {
 		if err := config.VerifyConfig(); err != nil {
 			logger.Log().Error(err.Error())
 			os.Exit(1)
 		}
 		if err := storage.InitDB(); err != nil {
-			logger.Log().Error(err.Error())
+			logger.Log().Fatal(err.Error())
 			os.Exit(1)
 		}
 
 		go server.Listen()
 
 		if err := smtpd.Listen(); err != nil {
-			logger.Log().Error(err.Error())
+			storage.Close()
+			logger.Log().Fatal(err.Error())
 			os.Exit(1)
 		}
 	},
@@ -77,52 +78,68 @@ func init() {
 	// load and warn deprecated ENV vars
 	initDeprecatedConfigFromEnv()
 
-	// load ENV vars
+	// load environment variables
 	initConfigFromEnv()
 
-	rootCmd.Flags().StringVarP(&config.DataFile, "db-file", "d", config.DataFile, "Database file to store persistent data")
-	rootCmd.Flags().StringVarP(&config.SMTPListen, "smtp", "s", config.SMTPListen, "SMTP bind interface and port")
-	rootCmd.Flags().StringVarP(&config.HTTPListen, "listen", "l", config.HTTPListen, "HTTP bind interface and port for UI")
+	rootCmd.Flags().StringVarP(&config.Database, "database", "d", config.Database, "Database to store persistent data")
+	rootCmd.Flags().StringVar(&config.TenantID, "tenant-id", config.TenantID, "Database tenant ID to isolate data")
 	rootCmd.Flags().IntVarP(&config.MaxMessages, "max", "m", config.MaxMessages, "Max number of messages to store")
-	rootCmd.Flags().StringVar(&config.Webroot, "webroot", config.Webroot, "Set the webroot for web UI & API")
-	rootCmd.Flags().StringVar(&server.AccessControlAllowOrigin, "api-cors", server.AccessControlAllowOrigin, "Set API CORS Access-Control-Allow-Origin header")
 	rootCmd.Flags().BoolVar(&config.UseMessageDates, "use-message-dates", config.UseMessageDates, "Use message dates as the received dates")
 	rootCmd.Flags().BoolVar(&config.IgnoreDuplicateIDs, "ignore-duplicate-ids", config.IgnoreDuplicateIDs, "Ignore duplicate messages (by Message-Id)")
+	rootCmd.Flags().StringVar(&logger.LogFile, "log-file", logger.LogFile, "Log output to file instead of stdout")
+	rootCmd.Flags().BoolVarP(&logger.QuietLogging, "quiet", "q", logger.QuietLogging, "Quiet logging (errors only)")
+	rootCmd.Flags().BoolVarP(&logger.VerboseLogging, "verbose", "v", logger.VerboseLogging, "Verbose logging")
 
-	rootCmd.Flags().StringVar(&config.UIAuthFile, "ui-auth-file", config.UIAuthFile, "A password file for web UI authentication")
+	// Web UI / API
+	rootCmd.Flags().StringVarP(&config.HTTPListen, "listen", "l", config.HTTPListen, "HTTP bind interface & port for UI")
+	rootCmd.Flags().StringVar(&config.Webroot, "webroot", config.Webroot, "Set the webroot for web UI & API")
+	rootCmd.Flags().StringVar(&config.UIAuthFile, "ui-auth-file", config.UIAuthFile, "A password file for web UI & API authentication")
 	rootCmd.Flags().StringVar(&config.UITLSCert, "ui-tls-cert", config.UITLSCert, "TLS certificate for web UI (HTTPS) - requires ui-tls-key")
 	rootCmd.Flags().StringVar(&config.UITLSKey, "ui-tls-key", config.UITLSKey, "TLS key for web UI (HTTPS) - requires ui-tls-cert")
+	rootCmd.Flags().StringVar(&server.AccessControlAllowOrigin, "api-cors", server.AccessControlAllowOrigin, "Set API CORS Access-Control-Allow-Origin header")
+	rootCmd.Flags().BoolVar(&config.BlockRemoteCSSAndFonts, "block-remote-css-and-fonts", config.BlockRemoteCSSAndFonts, "Block access to remote CSS & fonts")
+	rootCmd.Flags().StringVar(&config.EnableSpamAssassin, "enable-spamassassin", config.EnableSpamAssassin, "Enable integration with SpamAssassin")
+	rootCmd.Flags().BoolVar(&config.AllowUntrustedTLS, "allow-untrusted-tls", config.AllowUntrustedTLS, "Do not verify HTTPS certificates (link checker & screenshots)")
 
+	// SMTP server
+	rootCmd.Flags().StringVarP(&config.SMTPListen, "smtp", "s", config.SMTPListen, "SMTP bind interface and port")
 	rootCmd.Flags().StringVar(&config.SMTPAuthFile, "smtp-auth-file", config.SMTPAuthFile, "A password file for SMTP authentication")
 	rootCmd.Flags().BoolVar(&config.SMTPAuthAcceptAny, "smtp-auth-accept-any", config.SMTPAuthAcceptAny, "Accept any SMTP username and password, including none")
 	rootCmd.Flags().StringVar(&config.SMTPTLSCert, "smtp-tls-cert", config.SMTPTLSCert, "TLS certificate for SMTP (STARTTLS) - requires smtp-tls-key")
 	rootCmd.Flags().StringVar(&config.SMTPTLSKey, "smtp-tls-key", config.SMTPTLSKey, "TLS key for SMTP (STARTTLS) - requires smtp-tls-cert")
-	rootCmd.Flags().BoolVar(&config.SMTPAuthAllowInsecure, "smtp-auth-allow-insecure", config.SMTPAuthAllowInsecure, "Enable insecure PLAIN & LOGIN authentication")
+	rootCmd.Flags().BoolVar(&config.SMTPRequireSTARTTLS, "smtp-require-starttls", config.SMTPRequireSTARTTLS, "Require SMTP client use STARTTLS")
+	rootCmd.Flags().BoolVar(&config.SMTPRequireTLS, "smtp-require-tls", config.SMTPRequireTLS, "Require client use SSL/TLS")
+	rootCmd.Flags().BoolVar(&config.SMTPAuthAllowInsecure, "smtp-auth-allow-insecure", config.SMTPAuthAllowInsecure, "Allow insecure PLAIN & LOGIN SMTP authentication")
+	rootCmd.Flags().BoolVar(&config.SMTPStrictRFCHeaders, "smtp-strict-rfc-headers", config.SMTPStrictRFCHeaders, "Return SMTP error if message headers contain <CR><CR><LF>")
+	rootCmd.Flags().IntVar(&config.SMTPMaxRecipients, "smtp-max-recipients", config.SMTPMaxRecipients, "Maximum SMTP recipients allowed")
+	rootCmd.Flags().StringVar(&config.SMTPAllowedRecipients, "smtp-allowed-recipients", config.SMTPAllowedRecipients, "Only allow SMTP recipients matching a regular expression (default allow all)")
+	rootCmd.Flags().BoolVar(&smtpd.DisableReverseDNS, "smtp-disable-rdns", smtpd.DisableReverseDNS, "Disable SMTP reverse DNS lookups")
 
-	rootCmd.Flags().StringVar(&config.SMTPRelayConfigFile, "smtp-relay-config", config.SMTPRelayConfigFile, "SMTP configuration file to allow releasing messages")
-	rootCmd.Flags().BoolVar(&config.SMTPRelayAllIncoming, "smtp-relay-all", config.SMTPRelayAllIncoming, "Relay all incoming messages via external SMTP server (caution!)")
+	// SMTP relay
+	rootCmd.Flags().StringVar(&config.SMTPRelayConfigFile, "smtp-relay-config", config.SMTPRelayConfigFile, "SMTP relay configuration file to allow releasing messages")
+	rootCmd.Flags().BoolVar(&config.SMTPRelayAll, "smtp-relay-all", config.SMTPRelayAll, "Auto-relay all new messages via external SMTP server (caution!)")
+	rootCmd.Flags().StringVar(&config.SMTPRelayMatching, "smtp-relay-matching", config.SMTPRelayMatching, "Auto-relay new messages to only matching recipients (regular expression)")
 
-	rootCmd.Flags().StringVarP(&config.SMTPCLITags, "tag", "t", config.SMTPCLITags, "Tag new messages matching filters")
-	rootCmd.Flags().BoolVarP(&logger.QuietLogging, "quiet", "q", logger.QuietLogging, "Quiet logging (errors only)")
-	rootCmd.Flags().BoolVarP(&logger.VerboseLogging, "verbose", "v", logger.VerboseLogging, "Verbose logging")
+	// POP3 server
+	rootCmd.Flags().StringVar(&config.POP3Listen, "pop3", config.POP3Listen, "POP3 server bind interface and port")
+	rootCmd.Flags().StringVar(&config.POP3AuthFile, "pop3-auth-file", config.POP3AuthFile, "A password file for POP3 server authentication (enables POP3 server)")
+	rootCmd.Flags().StringVar(&config.POP3TLSCert, "pop3-tls-cert", config.POP3TLSCert, "Optional TLS certificate for POP3 server - requires pop3-tls-key")
+	rootCmd.Flags().StringVar(&config.POP3TLSKey, "pop3-tls-key", config.POP3TLSKey, "Optional TLS key for POP3 server - requires pop3-tls-cert")
 
-	// deprecated flags 2022/08/06
-	rootCmd.Flags().StringVarP(&config.UIAuthFile, "auth-file", "a", config.UIAuthFile, "A password file for web UI authentication")
-	rootCmd.Flags().StringVar(&config.UITLSCert, "ssl-cert", config.UITLSCert, "SSL certificate - requires ssl-key")
-	rootCmd.Flags().StringVar(&config.UITLSKey, "ssl-key", config.UITLSKey, "SSL key - requires ssl-cert")
-	rootCmd.Flags().Lookup("auth-file").Hidden = true
-	rootCmd.Flags().Lookup("auth-file").Deprecated = "use --ui-auth-file"
-	rootCmd.Flags().Lookup("ssl-cert").Hidden = true
-	rootCmd.Flags().Lookup("ssl-cert").Deprecated = "use --ui-tls-cert"
-	rootCmd.Flags().Lookup("ssl-key").Hidden = true
-	rootCmd.Flags().Lookup("ssl-key").Deprecated = "use --ui-tls-key"
+	// Tagging
+	rootCmd.Flags().StringVarP(&config.CLITagsArg, "tag", "t", config.CLITagsArg, "Tag new messages matching filters")
+	rootCmd.Flags().StringVar(&config.TagsConfig, "tags-config", config.TagsConfig, "Load tags filters from yaml configuration file")
+	rootCmd.Flags().BoolVar(&tools.TagsTitleCase, "tags-title-case", tools.TagsTitleCase, "TitleCase new tags generated from plus-addresses and X-Tags")
 
-	// deprecated flags 2022/08/30
-	rootCmd.Flags().StringVar(&config.DataFile, "data", config.DataFile, "Database file to store persistent data")
-	rootCmd.Flags().Lookup("data").Hidden = true
-	rootCmd.Flags().Lookup("data").Deprecated = "use --db-file"
+	// Webhook
+	rootCmd.Flags().StringVar(&config.WebhookURL, "webhook-url", config.WebhookURL, "Send a webhook request for new messages")
+	rootCmd.Flags().IntVar(&webhook.RateLimit, "webhook-limit", webhook.RateLimit, "Limit webhook requests per second")
 
-	// deprecated flags 2023/03/12
+	// DEPRECATED FLAG 2024/04/12 - but will not be removed to maintain backwards compatibility
+	rootCmd.Flags().StringVar(&config.Database, "db-file", config.Database, "Database file to store persistent data")
+	rootCmd.Flags().Lookup("db-file").Hidden = true
+
+	// DEPRECATED FLAGS 2023/03/12
 	rootCmd.Flags().StringVar(&config.UITLSCert, "ui-ssl-cert", config.UITLSCert, "SSL certificate for web UI - requires ui-ssl-key")
 	rootCmd.Flags().StringVar(&config.UITLSKey, "ui-ssl-key", config.UITLSKey, "SSL key for web UI - requires ui-ssl-cert")
 	rootCmd.Flags().StringVar(&config.SMTPTLSCert, "smtp-ssl-cert", config.SMTPTLSCert, "SSL certificate for SMTP - requires smtp-ssl-key")
@@ -135,123 +152,192 @@ func init() {
 	rootCmd.Flags().Lookup("smtp-ssl-cert").Deprecated = "use --smtp-tls-cert"
 	rootCmd.Flags().Lookup("smtp-ssl-key").Hidden = true
 	rootCmd.Flags().Lookup("smtp-ssl-key").Deprecated = "use --smtp-tls-key"
+
+	// DEPRECATED FLAGS 2024/03/16
+	rootCmd.Flags().BoolVar(&config.SMTPRequireSTARTTLS, "smtp-tls-required", config.SMTPRequireSTARTTLS, "smtp-require-starttls")
+	rootCmd.Flags().Lookup("smtp-tls-required").Hidden = true
+	rootCmd.Flags().Lookup("smtp-tls-required").Deprecated = "use --smtp-require-starttls"
+
+	// DEPRECATED FLAG 2024/04/13 - no longer used
+	rootCmd.Flags().BoolVar(&config.DisableHTMLCheck, "disable-html-check", config.DisableHTMLCheck, "Disable the HTML check functionality (web UI & API)")
+	rootCmd.Flags().Lookup("disable-html-check").Hidden = true
 }
 
 // Load settings from environment
 func initConfigFromEnv() {
-	// defaults from envars if provided
-	if len(os.Getenv("MP_DATA_FILE")) > 0 {
-		config.DataFile = os.Getenv("MP_DATA_FILE")
-	}
-	if len(os.Getenv("MP_SMTP_BIND_ADDR")) > 0 {
-		config.SMTPListen = os.Getenv("MP_SMTP_BIND_ADDR")
-	}
-	if len(os.Getenv("MP_UI_BIND_ADDR")) > 0 {
-		config.HTTPListen = os.Getenv("MP_UI_BIND_ADDR")
+	// General
+	if len(os.Getenv("MP_DATABASE")) > 0 {
+		config.Database = os.Getenv("MP_DATABASE")
 	}
+
+	config.TenantID = os.Getenv("MP_TENANT_ID")
+
 	if len(os.Getenv("MP_MAX_MESSAGES")) > 0 {
 		config.MaxMessages, _ = strconv.Atoi(os.Getenv("MP_MAX_MESSAGES"))
 	}
-	if len(os.Getenv("MP_TAG")) > 0 {
-		config.SMTPCLITags = os.Getenv("MP_TAG")
-	}
-
-	// UI
-	if len(os.Getenv("MP_UI_AUTH_FILE")) > 0 {
-		config.UIAuthFile = os.Getenv("MP_UI_AUTH_FILE")
-	}
-	if len(os.Getenv("MP_UI_TLS_CERT")) > 0 {
-		config.UITLSCert = os.Getenv("MP_UI_TLS_CERT")
-	}
-	if len(os.Getenv("MP_UI_TLS_KEY")) > 0 {
-		config.UITLSKey = os.Getenv("MP_UI_TLS_KEY")
-	}
-
-	// SMTP
-	if len(os.Getenv("MP_SMTP_AUTH_FILE")) > 0 {
-		config.SMTPAuthFile = os.Getenv("MP_SMTP_AUTH_FILE")
-	}
-	if len(os.Getenv("MP_SMTP_TLS_CERT")) > 0 {
-		config.SMTPTLSCert = os.Getenv("MP_SMTP_TLS_CERT")
-	}
-	if len(os.Getenv("MP_SMTP_TLS_KEY")) > 0 {
-		config.SMTPTLSKey = os.Getenv("MP_SMTP_TLS_KEY")
-	}
-	if getEnabledFromEnv("MP_SMTP_AUTH_ACCEPT_ANY") {
-		config.SMTPAuthAcceptAny = true
-	}
-	if getEnabledFromEnv("MP_SMTP_AUTH_ALLOW_INSECURE") {
-		config.SMTPAuthAllowInsecure = true
-	}
-
-	// Relay server config
-	if len(os.Getenv("MP_SMTP_RELAY_CONFIG")) > 0 {
-		config.SMTPRelayConfigFile = os.Getenv("MP_SMTP_RELAY_CONFIG")
-	}
-	if getEnabledFromEnv("MP_SMTP_RELAY_ALL") {
-		config.SMTPRelayAllIncoming = true
-	}
-
-	// Misc options
-	if len(os.Getenv("MP_WEBROOT")) > 0 {
-		config.Webroot = os.Getenv("MP_WEBROOT")
-	}
-	if len(os.Getenv("MP_API_CORS")) > 0 {
-		server.AccessControlAllowOrigin = os.Getenv("MP_API_CORS")
-	}
 	if getEnabledFromEnv("MP_USE_MESSAGE_DATES") {
 		config.UseMessageDates = true
 	}
 	if getEnabledFromEnv("MP_IGNORE_DUPLICATE_IDS") {
 		config.IgnoreDuplicateIDs = true
 	}
+	if len(os.Getenv("MP_LOG_FILE")) > 0 {
+		logger.LogFile = os.Getenv("MP_LOG_FILE")
+	}
 	if getEnabledFromEnv("MP_QUIET") {
 		logger.QuietLogging = true
 	}
 	if getEnabledFromEnv("MP_VERBOSE") {
 		logger.VerboseLogging = true
 	}
+
+	// Web UI & API
+	if len(os.Getenv("MP_UI_BIND_ADDR")) > 0 {
+		config.HTTPListen = os.Getenv("MP_UI_BIND_ADDR")
+	}
+	if len(os.Getenv("MP_WEBROOT")) > 0 {
+		config.Webroot = os.Getenv("MP_WEBROOT")
+	}
+	config.UIAuthFile = os.Getenv("MP_UI_AUTH_FILE")
+	if err := auth.SetUIAuth(os.Getenv("MP_UI_AUTH")); err != nil {
+		logger.Log().Errorf(err.Error())
+	}
+	config.UITLSCert = os.Getenv("MP_UI_TLS_CERT")
+	config.UITLSKey = os.Getenv("MP_UI_TLS_KEY")
+	if len(os.Getenv("MP_API_CORS")) > 0 {
+		server.AccessControlAllowOrigin = os.Getenv("MP_API_CORS")
+	}
+	if getEnabledFromEnv("MP_BLOCK_REMOTE_CSS_AND_FONTS") {
+		config.BlockRemoteCSSAndFonts = true
+	}
+	if len(os.Getenv("MP_ENABLE_SPAMASSASSIN")) > 0 {
+		config.EnableSpamAssassin = os.Getenv("MP_ENABLE_SPAMASSASSIN")
+	}
+	if getEnabledFromEnv("MP_ALLOW_UNTRUSTED_TLS") {
+		config.AllowUntrustedTLS = true
+	}
+
+	// SMTP server
+	if len(os.Getenv("MP_SMTP_BIND_ADDR")) > 0 {
+		config.SMTPListen = os.Getenv("MP_SMTP_BIND_ADDR")
+	}
+	config.SMTPAuthFile = os.Getenv("MP_SMTP_AUTH_FILE")
+	if err := auth.SetSMTPAuth(os.Getenv("MP_SMTP_AUTH")); err != nil {
+		logger.Log().Errorf(err.Error())
+	}
+	if getEnabledFromEnv("MP_SMTP_AUTH_ACCEPT_ANY") {
+		config.SMTPAuthAcceptAny = true
+	}
+	config.SMTPTLSCert = os.Getenv("MP_SMTP_TLS_CERT")
+	config.SMTPTLSKey = os.Getenv("MP_SMTP_TLS_KEY")
+	if getEnabledFromEnv("MP_SMTP_REQUIRE_STARTTLS") {
+		config.SMTPRequireSTARTTLS = true
+	}
+	if getEnabledFromEnv("MP_SMTP_REQUIRE_TLS") {
+		config.SMTPRequireTLS = true
+	}
+	if getEnabledFromEnv("MP_SMTP_AUTH_ALLOW_INSECURE") {
+		config.SMTPAuthAllowInsecure = true
+	}
+	if getEnabledFromEnv("MP_SMTP_STRICT_RFC_HEADERS") {
+		config.SMTPStrictRFCHeaders = true
+	}
+	if len(os.Getenv("MP_SMTP_MAX_RECIPIENTS")) > 0 {
+		config.SMTPMaxRecipients, _ = strconv.Atoi(os.Getenv("MP_SMTP_MAX_RECIPIENTS"))
+	}
+	if len(os.Getenv("MP_SMTP_ALLOWED_RECIPIENTS")) > 0 {
+		config.SMTPAllowedRecipients = os.Getenv("MP_SMTP_ALLOWED_RECIPIENTS")
+	}
+	if getEnabledFromEnv("MP_SMTP_DISABLE_RDNS") {
+		smtpd.DisableReverseDNS = true
+	}
+
+	// SMTP relay
+	config.SMTPRelayConfigFile = os.Getenv("MP_SMTP_RELAY_CONFIG")
+	if getEnabledFromEnv("MP_SMTP_RELAY_ALL") {
+		config.SMTPRelayAll = true
+	}
+	config.SMTPRelayMatching = os.Getenv("MP_SMTP_RELAY_MATCHING")
+	config.SMTPRelayConfig = config.SMTPRelayConfigStruct{}
+	config.SMTPRelayConfig.Host = os.Getenv("MP_SMTP_RELAY_HOST")
+	if len(os.Getenv("MP_SMTP_RELAY_PORT")) > 0 {
+		config.SMTPRelayConfig.Port, _ = strconv.Atoi(os.Getenv("MP_SMTP_RELAY_PORT"))
+	}
+	config.SMTPRelayConfig.STARTTLS = getEnabledFromEnv("MP_SMTP_RELAY_STARTTLS")
+	config.SMTPRelayConfig.AllowInsecure = getEnabledFromEnv("MP_SMTP_RELAY_ALLOW_INSECURE")
+	config.SMTPRelayConfig.Auth = os.Getenv("MP_SMTP_RELAY_AUTH")
+	config.SMTPRelayConfig.Username = os.Getenv("MP_SMTP_RELAY_USERNAME")
+	config.SMTPRelayConfig.Password = os.Getenv("MP_SMTP_RELAY_PASSWORD")
+	config.SMTPRelayConfig.Secret = os.Getenv("MP_SMTP_RELAY_SECRET")
+	config.SMTPRelayConfig.ReturnPath = os.Getenv("MP_SMTP_RELAY_RETURN_PATH")
+	config.SMTPRelayConfig.AllowedRecipients = os.Getenv("MP_SMTP_RELAY_ALLOWED_RECIPIENTS")
+
+	// POP3 server
+	if len(os.Getenv("MP_POP3_BIND_ADDR")) > 0 {
+		config.POP3Listen = os.Getenv("MP_POP3_BIND_ADDR")
+	}
+	config.POP3AuthFile = os.Getenv("MP_POP3_AUTH_FILE")
+	if err := auth.SetPOP3Auth(os.Getenv("MP_POP3_AUTH")); err != nil {
+		logger.Log().Errorf(err.Error())
+	}
+	config.POP3TLSCert = os.Getenv("MP_POP3_TLS_CERT")
+	config.POP3TLSKey = os.Getenv("MP_POP3_TLS_KEY")
+
+	// Tagging
+	config.CLITagsArg = os.Getenv("MP_TAG")
+	config.TagsConfig = os.Getenv("MP_TAGS_CONFIG")
+	tools.TagsTitleCase = getEnabledFromEnv("MP_TAGS_TITLE_CASE")
+
+	// Webhook
+	if len(os.Getenv("MP_WEBHOOK_URL")) > 0 {
+		config.WebhookURL = os.Getenv("MP_WEBHOOK_URL")
+	}
+	if len(os.Getenv("MP_WEBHOOK_LIMIT")) > 0 {
+		webhook.RateLimit, _ = strconv.Atoi(os.Getenv("MP_WEBHOOK_LIMIT"))
+	}
 }
 
 // load deprecated settings from environment and warn
 func initDeprecatedConfigFromEnv() {
-	// deprecated 2022/08/06
-	if len(os.Getenv("MP_AUTH_FILE")) > 0 {
-		fmt.Println("ENV MP_AUTH_FILE has been deprecated, use MP_UI_AUTH_FILE")
-		config.UIAuthFile = os.Getenv("MP_AUTH_FILE")
-	}
-	// deprecated 2022/08/06
-	if len(os.Getenv("MP_SSL_CERT")) > 0 {
-		fmt.Println("ENV MP_SSL_CERT has been deprecated, use MP_UI_TLS_CERT")
-		config.UITLSCert = os.Getenv("MP_SSL_CERT")
-	}
-	// deprecated 2022/08/06
-	if len(os.Getenv("MP_SSL_KEY")) > 0 {
-		fmt.Println("ENV MP_SSL_KEY has been deprecated, use MP_UI_TLS_KEY")
-		config.UITLSKey = os.Getenv("MP_TLS_KEY")
-	}
-	// deprecated 2022/08/28
-	if len(os.Getenv("MP_DATA_DIR")) > 0 {
-		fmt.Println("ENV MP_DATA_DIR has been deprecated, use MP_DATA_FILE")
-		config.DataFile = os.Getenv("MP_DATA_DIR")
+	// deprecated 2024/04/12 - but will not be removed to maintain backwards compatibility
+	if len(os.Getenv("MP_DATA_FILE")) > 0 {
+		config.Database = os.Getenv("MP_DATA_FILE")
 	}
+
 	// deprecated 2023/03/12
 	if len(os.Getenv("MP_UI_SSL_CERT")) > 0 {
-		fmt.Println("ENV MP_UI_SSL_CERT has been deprecated, use MP_UI_TLS_CERT")
+		logger.Log().Warn("ENV MP_UI_SSL_CERT has been deprecated, use MP_UI_TLS_CERT")
 		config.UITLSCert = os.Getenv("MP_UI_SSL_CERT")
 	}
+	// deprecated 2023/03/12
 	if len(os.Getenv("MP_UI_SSL_KEY")) > 0 {
-		fmt.Println("ENV MP_UI_SSL_KEY has been deprecated, use MP_UI_TLS_KEY")
+		logger.Log().Warn("ENV MP_UI_SSL_KEY has been deprecated, use MP_UI_TLS_KEY")
 		config.UITLSKey = os.Getenv("MP_UI_SSL_KEY")
 	}
+	// deprecated 2023/03/12
 	if len(os.Getenv("MP_SMTP_SSL_CERT")) > 0 {
-		fmt.Println("ENV MP_SMTP_CERT has been deprecated, use MP_SMTP_TLS_CERT")
+		logger.Log().Warn("ENV MP_SMTP_CERT has been deprecated, use MP_SMTP_TLS_CERT")
 		config.SMTPTLSCert = os.Getenv("MP_SMTP_SSL_CERT")
 	}
+	// deprecated 2023/03/12
 	if len(os.Getenv("MP_SMTP_SSL_KEY")) > 0 {
-		fmt.Println("ENV MP_SMTP_KEY has been deprecated, use MP_SMTP_TLS_KEY")
+		logger.Log().Warn("ENV MP_SMTP_KEY has been deprecated, use MP_SMTP_TLS_KEY")
 		config.SMTPTLSKey = os.Getenv("MP_SMTP_SMTP_KEY")
 	}
+	// deprecated 2023/12/10
+	if getEnabledFromEnv("MP_STRICT_RFC_HEADERS") {
+		logger.Log().Warn("ENV MP_STRICT_RFC_HEADERS has been deprecated, use MP_SMTP_STRICT_RFC_HEADERS")
+		config.SMTPStrictRFCHeaders = true
+	}
+	// deprecated 2024/03.16
+	if getEnabledFromEnv("MP_SMTP_TLS_REQUIRED") {
+		logger.Log().Warn("ENV MP_SMTP_TLS_REQUIRED has been deprecated, use MP_SMTP_REQUIRE_STARTTLS")
+		config.SMTPRequireSTARTTLS = true
+	}
+	if getEnabledFromEnv("MP_DISABLE_HTML_CHECK") {
+		logger.Log().Warn("ENV MP_DISABLE_HTML_CHECK has been deprecated and is no longer used")
+		config.DisableHTMLCheck = true
+	}
 }
 
 // Wrapper to get a boolean from an environment variable

cmd/version.go

@@ -6,7 +6,7 @@ import (
 	"runtime"
 
 	"github.com/axllent/mailpit/config"
-	"github.com/axllent/mailpit/utils/updater"
+	"github.com/axllent/mailpit/internal/updater"
 	"github.com/spf13/cobra"
 )
 

config/config.go

@@ -4,16 +4,17 @@ package config
 import (
 	"errors"
 	"fmt"
+	"net"
+	"net/url"
 	"os"
 	"path"
 	"path/filepath"
 	"regexp"
 	"strings"
 
-	"github.com/axllent/mailpit/utils/logger"
-	"github.com/axllent/mailpit/utils/tools"
-	"github.com/mattn/go-shellwords"
-	"github.com/tg123/go-htpasswd"
+	"github.com/axllent/mailpit/internal/auth"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/spamassassin"
 	"gopkg.in/yaml.v3"
 )
 
@@ -24,8 +25,12 @@ var (
 	// HTTPListen to listen on <interface>:<port>
 	HTTPListen = "[::]:8025"
 
-	// DataFile for mail (optional)
-	DataFile string
+	// Database for mail (optional)
+	Database string
+
+	// TenantID is an optional prefix to be applied to all database tables,
+	// allowing multiple isolated instances of Mailpit to share a database.
+	TenantID = ""
 
 	// MaxMessages is the maximum number of messages a mailbox can have (auto-pruned every minute)
 	MaxMessages = 500
@@ -39,12 +44,9 @@ var (
 	// UITLSKey file
 	UITLSKey string
 
-	// UIAuthFile for basic authentication
+	// UIAuthFile for UI & API authentication
 	UIAuthFile string
 
-	// UIAuth used for authentication
-	UIAuth *htpasswd.File
-
 	// Webroot to define the base path for the UI and API
 	Webroot = "/"
 
@@ -54,45 +56,99 @@ var (
 	// SMTPTLSKey file
 	SMTPTLSKey string
 
+	// SMTPRequireSTARTTLS to enforce the use of STARTTLS
+	// The only allowed commands are NOOP, EHLO, STARTTLS and QUIT (as specified in RFC 3207) until
+	// the connection is upgraded to TLS i.e. until STARTTLS is issued.
+	SMTPRequireSTARTTLS bool
+
+	// SMTPRequireTLS to allow only SSL/TLS connections for all connections
+	//
+	SMTPRequireTLS bool
+
 	// SMTPAuthFile for SMTP authentication
 	SMTPAuthFile string
 
-	// SMTPAuthConfig used for authentication auto-generated from SMTPAuthFile
-	SMTPAuthConfig *htpasswd.File
-
 	// SMTPAuthAllowInsecure allows PLAIN & LOGIN unencrypted authentication
 	SMTPAuthAllowInsecure bool
 
 	// SMTPAuthAcceptAny accepts any username/password including none
 	SMTPAuthAcceptAny bool
 
+	// SMTPMaxRecipients is the maximum number of recipients a message may have.
+	// The SMTP RFC states that an server must handle a minimum of 100 recipients
+	// however some servers accept more.
+	SMTPMaxRecipients = 100
+
 	// IgnoreDuplicateIDs will skip messages with the same ID
 	IgnoreDuplicateIDs bool
 
-	// SMTPCLITags is used to map the CLI args
-	SMTPCLITags string
+	// BlockRemoteCSSAndFonts used to disable remote CSS & fonts
+	BlockRemoteCSSAndFonts = false
+
+	// CLITagsArg is used to map the CLI args
+	CLITagsArg string
 
 	// ValidTagRegexp represents a valid tag
-	ValidTagRegexp = regexp.MustCompile(`^([a-zA-Z0-9\-\ \_]){3,}$`)
+	ValidTagRegexp = regexp.MustCompile(`^([a-zA-Z0-9\-\ \_\.]){1,}$`)
 
-	// SMTPTags are expressions to apply tags to new mail
-	SMTPTags []AutoTag
+	// TagsConfig is a yaml file to pre-load tags
+	TagsConfig string
+
+	// TagFilters are used to apply tags to new mail
+	TagFilters []autoTag
 
 	// SMTPRelayConfigFile to parse a yaml file and store config of relay SMTP server
 	SMTPRelayConfigFile string
 
 	// SMTPRelayConfig to parse a yaml file and store config of relay SMTP server
-	SMTPRelayConfig smtpRelayConfigStruct
+	SMTPRelayConfig SMTPRelayConfigStruct
+
+	// SMTPStrictRFCHeaders will return an error if the email headers contain <CR><CR><LF> (\r\r\n)
+	// @see https://github.com/axllent/mailpit/issues/87 & https://github.com/axllent/mailpit/issues/153
+	SMTPStrictRFCHeaders bool
+
+	// SMTPAllowedRecipients if set, will only accept recipients matching this regular expression
+	SMTPAllowedRecipients string
+
+	// SMTPAllowedRecipientsRegexp is the compiled version of SMTPAllowedRecipients
+	SMTPAllowedRecipientsRegexp *regexp.Regexp
 
 	// ReleaseEnabled is whether message releases are enabled, requires a valid SMTPRelayConfigFile
 	ReleaseEnabled = false
 
-	// SMTPRelayAllIncoming is whether to relay all incoming messages via pre-configured SMTP server.
+	// SMTPRelayAll is whether to relay all incoming messages via pre-configured SMTP server.
 	// Use with extreme caution!
-	SMTPRelayAllIncoming = false
+	SMTPRelayAll = false
 
-	// ContentSecurityPolicy for HTTP server
-	ContentSecurityPolicy = "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; frame-src 'self'; img-src * data: blob:; font-src 'self' data:; media-src 'self'; connect-src 'self' ws: wss:; object-src 'none'; base-uri 'self';"
+	// SMTPRelayMatching if set, will auto-release to recipients matching this regular expression
+	SMTPRelayMatching string
+
+	// SMTPRelayMatchingRegexp is the compiled version of SMTPRelayMatching
+	SMTPRelayMatchingRegexp *regexp.Regexp
+
+	// POP3Listen address - if set then Mailpit will start the POP3 server and listen on this address
+	POP3Listen = "[::]:1110"
+
+	// POP3AuthFile for POP3 authentication
+	POP3AuthFile string
+
+	// POP3TLSCert TLS certificate
+	POP3TLSCert string
+
+	// POP3TLSKey TLS certificate key
+	POP3TLSKey string
+
+	// EnableSpamAssassin must be either <host>:<port> or "postmark"
+	EnableSpamAssassin string
+
+	// WebhookURL for calling
+	WebhookURL string
+
+	// ContentSecurityPolicy for HTTP server - set via VerifyConfig()
+	ContentSecurityPolicy string
+
+	// AllowUntrustedTLS allows untrusted HTTPS connections link checking & screenshot generation
+	AllowUntrustedTLS bool
 
 	// Version is the default application version, updated on release
 	Version = "dev"
@@ -102,163 +158,296 @@ var (
 
 	// RepoBinaryName on Github for updater
 	RepoBinaryName = "mailpit"
+
+	// DisableHTMLCheck DEPRECATED 2024/04/13 - kept here to display console warning only
+	DisableHTMLCheck = false
 )
 
 // AutoTag struct for auto-tagging
-type AutoTag struct {
-	Tag   string
+type autoTag struct {
 	Match string
+	Tags  []string
 }
 
 // SMTPRelayConfigStruct struct for parsing yaml & storing variables
-type smtpRelayConfigStruct struct {
-	Host                     string `yaml:"host"`
-	Port                     int    `yaml:"port"`
-	STARTTLS                 bool   `yaml:"starttls"`
-	AllowInsecure            bool   `yaml:"allow-insecure"`
-	Auth                     string `yaml:"auth"`                // none, plain, login, cram-md5
-	Username                 string `yaml:"username"`            // plain & cram-md5
-	Password                 string `yaml:"password"`            // plain
-	Secret                   string `yaml:"secret"`              // cram-md5
-	ReturnPath               string `yaml:"return-path"`         // allow overriding the bounce address
-	RecipientAllowlist       string `yaml:"recipient-allowlist"` // regex, if set needs to match for mails to be relayed
-	RecipientAllowlistRegexp *regexp.Regexp
+type SMTPRelayConfigStruct struct {
+	Host                    string         `yaml:"host"`
+	Port                    int            `yaml:"port"`
+	STARTTLS                bool           `yaml:"starttls"`
+	AllowInsecure           bool           `yaml:"allow-insecure"`
+	Auth                    string         `yaml:"auth"`               // none, plain, login, cram-md5
+	Username                string         `yaml:"username"`           // plain & cram-md5
+	Password                string         `yaml:"password"`           // plain
+	Secret                  string         `yaml:"secret"`             // cram-md5
+	ReturnPath              string         `yaml:"return-path"`        // allow overriding the bounce address
+	AllowedRecipients       string         `yaml:"allowed-recipients"` // regex, if set needs to match for mails to be relayed
+	AllowedRecipientsRegexp *regexp.Regexp // compiled regexp using AllowedRecipients
+	// DEPRECATED 2024/03/12
+	RecipientAllowlist string `yaml:"recipient-allowlist"`
 }
 
 // VerifyConfig wil do some basic checking
 func VerifyConfig() error {
-	if DataFile != "" && isDir(DataFile) {
-		DataFile = filepath.Join(DataFile, "mailpit.db")
+	cssFontRestriction := "*"
+	if BlockRemoteCSSAndFonts {
+		cssFontRestriction = "'self'"
 	}
 
-	re := regexp.MustCompile(`^((\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})|(\[([\da-fA-F:])+\])):\d+$`)
+	ContentSecurityPolicy = fmt.Sprintf("default-src 'self'; script-src 'self'; style-src %s 'unsafe-inline'; frame-src 'self'; img-src * data: blob:; font-src %s data:; media-src 'self'; connect-src 'self' ws: wss:; object-src 'none'; base-uri 'self';",
+		cssFontRestriction, cssFontRestriction,
+	)
+
+	if Database != "" && isDir(Database) {
+		Database = filepath.Join(Database, "mailpit.db")
+	}
+
+	TenantID = strings.TrimSpace(TenantID)
+	if TenantID != "" {
+		logger.Log().Infof("[db] using tenant \"%s\"", TenantID)
+		re := regexp.MustCompile(`[^a-zA-Z0-9\_]`)
+		TenantID = re.ReplaceAllString(TenantID, "_")
+		if !strings.HasSuffix(TenantID, "_") {
+			TenantID = TenantID + "_"
+		}
+	}
+
+	re := regexp.MustCompile(`.*:\d+$`)
 	if !re.MatchString(SMTPListen) {
-		return errors.New("SMTP bind should be in the format of <ip>:<port>")
+		return errors.New("[smtp] bind should be in the format of <ip>:<port>")
 	}
 	if !re.MatchString(HTTPListen) {
-		return errors.New("HTTP bind should be in the format of <ip>:<port>")
+		return errors.New("[ui] HTTP bind should be in the format of <ip>:<port>")
 	}
 
 	if UIAuthFile != "" {
+		UIAuthFile = filepath.Clean(UIAuthFile)
+
 		if !isFile(UIAuthFile) {
-			return fmt.Errorf("HTTP password file not found: %s", UIAuthFile)
+			return fmt.Errorf("[ui] HTTP password file not found or readable: %s", UIAuthFile)
 		}
 
-		a, err := htpasswd.New(UIAuthFile, htpasswd.DefaultSystems, nil)
+		b, err := os.ReadFile(UIAuthFile)
 		if err != nil {
 			return err
 		}
-		UIAuth = a
+
+		if err := auth.SetUIAuth(string(b)); err != nil {
+			return err
+		}
 	}
 
 	if UITLSCert != "" && UITLSKey == "" || UITLSCert == "" && UITLSKey != "" {
-		return errors.New("You must provide both a UI TLS certificate and a key")
+		return errors.New("[ui] you must provide both a UI TLS certificate and a key")
 	}
 
 	if UITLSCert != "" {
+		UITLSCert = filepath.Clean(UITLSCert)
+		UITLSKey = filepath.Clean(UITLSKey)
+
 		if !isFile(UITLSCert) {
-			return fmt.Errorf("TLS certificate not found: %s", UITLSCert)
+			return fmt.Errorf("[ui] TLS certificate not found or readable: %s", UITLSCert)
 		}
 
 		if !isFile(UITLSKey) {
-			return fmt.Errorf("TLS key not found: %s", UITLSKey)
+			return fmt.Errorf("[ui] TLS key not found or readable: %s", UITLSKey)
 		}
 	}
 
 	if SMTPTLSCert != "" && SMTPTLSKey == "" || SMTPTLSCert == "" && SMTPTLSKey != "" {
-		return errors.New("You must provide both an SMTP TLS certificate and a key")
+		return errors.New("[smtp] You must provide both an SMTP TLS certificate and a key")
 	}
 
 	if SMTPTLSCert != "" {
+		SMTPTLSCert = filepath.Clean(SMTPTLSCert)
+		SMTPTLSKey = filepath.Clean(SMTPTLSKey)
+
 		if !isFile(SMTPTLSCert) {
-			return fmt.Errorf("SMTP TLS certificate not found: %s", SMTPTLSCert)
+			return fmt.Errorf("[smtp] TLS certificate not found or readable: %s", SMTPTLSCert)
 		}
 
 		if !isFile(SMTPTLSKey) {
-			return fmt.Errorf("SMTP TLS key not found: %s", SMTPTLSKey)
+			return fmt.Errorf("[smtp] TLS key not found or readable: %s", SMTPTLSKey)
 		}
+	} else if SMTPRequireTLS {
+		return errors.New("[smtp] TLS cannot be required without an SMTP TLS certificate and key")
+	} else if SMTPRequireSTARTTLS {
+		return errors.New("[smtp] STARTTLS cannot be required without an SMTP TLS certificate and key")
+	}
+	if SMTPRequireSTARTTLS && SMTPAuthAllowInsecure || SMTPRequireTLS && SMTPAuthAllowInsecure {
+		return errors.New("[smtp] TLS cannot be required with --smtp-auth-allow-insecure")
+	}
+	if SMTPRequireSTARTTLS && SMTPRequireTLS {
+		return errors.New("[smtp] TLS & STARTTLS cannot be required together")
 	}
 
 	if SMTPAuthFile != "" {
+		SMTPAuthFile = filepath.Clean(SMTPAuthFile)
+
 		if !isFile(SMTPAuthFile) {
-			return fmt.Errorf("SMTP password file not found: %s", SMTPAuthFile)
+			return fmt.Errorf("[smtp] password file not found or readable: %s", SMTPAuthFile)
 		}
 
-		if SMTPAuthAcceptAny {
-			return errors.New("SMTP authentication can either use --smtp-auth-file or --smtp-auth-accept-any")
-		}
-
-		a, err := htpasswd.New(SMTPAuthFile, htpasswd.DefaultSystems, nil)
+		b, err := os.ReadFile(SMTPAuthFile)
 		if err != nil {
 			return err
 		}
-		SMTPAuthConfig = a
+
+		if err := auth.SetSMTPAuth(string(b)); err != nil {
+			return err
+		}
+
+		if !SMTPAuthAllowInsecure {
+			// https://www.rfc-editor.org/rfc/rfc4954
+			// A server implementation MUST implement a configuration in which
+			// it does NOT permit any plaintext password mechanisms, unless either
+			// the STARTTLS [SMTP-TLS] command has been negotiated or some other
+			// mechanism that protects the session from password snooping has been
+			// provided.  Server sites SHOULD NOT use any configuration which
+			// permits a plaintext password mechanism without such a protection
+			// mechanism against password snooping.
+			SMTPRequireSTARTTLS = true
+		}
 	}
 
-	if SMTPTLSCert == "" && (SMTPAuthFile != "" || SMTPAuthAcceptAny) && !SMTPAuthAllowInsecure {
-		return errors.New("SMTP authentication requires TLS encryption, run with `--smtp-auth-allow-insecure` to allow insecure authentication")
+	if auth.SMTPCredentials != nil && SMTPAuthAcceptAny {
+		return errors.New("[smtp] authentication cannot use both credentials and --smtp-auth-accept-any")
 	}
 
-	validWebrootRe := regexp.MustCompile(`[^0-9a-zA-Z\/\-\_\.]`)
+	if SMTPTLSCert == "" && (auth.SMTPCredentials != nil || SMTPAuthAcceptAny) && !SMTPAuthAllowInsecure {
+		return errors.New("[smtp] authentication requires STARTTLS or TLS encryption, run with `--smtp-auth-allow-insecure` to allow insecure authentication")
+	}
+
+	// POP3 server
+	if POP3TLSCert != "" {
+		POP3TLSCert = filepath.Clean(POP3TLSCert)
+		POP3TLSKey = filepath.Clean(POP3TLSKey)
+
+		if !isFile(POP3TLSCert) {
+			return fmt.Errorf("[pop3] TLS certificate not found or readable: %s", POP3TLSCert)
+		}
+
+		if !isFile(POP3TLSKey) {
+			return fmt.Errorf("[pop3] TLS key not found or readable: %s", POP3TLSKey)
+		}
+	}
+	if POP3TLSCert != "" && POP3TLSKey == "" || POP3TLSCert == "" && POP3TLSKey != "" {
+		return errors.New("[pop3] You must provide both a POP3 TLS certificate and a key")
+	}
+	if POP3Listen != "" {
+		_, err := net.ResolveTCPAddr("tcp", POP3Listen)
+		if err != nil {
+			return fmt.Errorf("[pop3] %s", err.Error())
+		}
+	}
+	if POP3AuthFile != "" {
+		POP3AuthFile = filepath.Clean(POP3AuthFile)
+
+		if !isFile(POP3AuthFile) {
+			return fmt.Errorf("[pop3] password file not found or readable: %s", POP3AuthFile)
+		}
+
+		b, err := os.ReadFile(POP3AuthFile)
+		if err != nil {
+			return err
+		}
+
+		if err := auth.SetPOP3Auth(string(b)); err != nil {
+			return err
+		}
+	}
+
+	// Web root
+	validWebrootRe := regexp.MustCompile(`[^0-9a-zA-Z\/\-\_\.@]`)
 	if validWebrootRe.MatchString(Webroot) {
-		return fmt.Errorf("Invalid characters in Webroot (%s). Valid chars include: [a-z A-Z 0-9 _ . - /]", Webroot)
+		return fmt.Errorf("invalid characters in Webroot (%s). Valid chars include: [a-z A-Z 0-9 _ . - / @]", Webroot)
 	}
 
 	s := strings.TrimRight(path.Join("/", Webroot, "/"), "/") + "/"
 	Webroot = s
 
-	SMTPTags = []AutoTag{}
+	if WebhookURL != "" && !isValidURL(WebhookURL) {
+		return fmt.Errorf("webhook URL does not appear to be a valid URL (%s)", WebhookURL)
+	}
 
-	p := shellwords.NewParser()
+	// DEPRECATED 2024/04/13
+	if DisableHTMLCheck {
+		logger.Log().Warn("--disable-html-check has been deprecated and is no longer used")
+	}
 
-	if SMTPCLITags != "" {
-		args, err := p.Parse(SMTPCLITags)
+	if EnableSpamAssassin != "" {
+		spamassassin.SetService(EnableSpamAssassin)
+		logger.Log().Infof("[spamassassin] enabled via %s", EnableSpamAssassin)
+
+		if err := spamassassin.Ping(); err != nil {
+			logger.Log().Warnf("[spamassassin] ping: %s", err.Error())
+		}
+	}
+
+	// load tag filters
+	TagFilters = []autoTag{}
+	if err := loadTagsFromArgs(CLITagsArg); err != nil {
+		return err
+	}
+	if err := loadTagsFromConfig(TagsConfig); err != nil {
+		return err
+	}
+
+	if SMTPAllowedRecipients != "" {
+		restrictRegexp, err := regexp.Compile(SMTPAllowedRecipients)
 		if err != nil {
-			return fmt.Errorf("Error parsing tags (%s)", err)
+			return fmt.Errorf("[smtp] failed to compile smtp-allowed-recipients regexp: %s", err.Error())
 		}
 
-		for _, a := range args {
-			t := strings.Split(a, "=")
-			if len(t) > 1 {
-				tag := tools.CleanTag(t[0])
-				if !ValidTagRegexp.MatchString(tag) || len(tag) == 0 {
-					return fmt.Errorf("Invalid tag (%s) - can only contain spaces, letters, numbers, - & _", tag)
-				}
-				match := strings.TrimSpace(strings.ToLower(strings.Join(t[1:], "=")))
-				if len(match) == 0 {
-					return fmt.Errorf("Invalid tag match (%s) - no search detected", tag)
-				}
-				SMTPTags = append(SMTPTags, AutoTag{Tag: tag, Match: match})
-			} else {
-				return fmt.Errorf("Error parsing tags (%s)", a)
-			}
-		}
+		SMTPAllowedRecipientsRegexp = restrictRegexp
+		logger.Log().Infof("[smtp] only allowing recipients matching regexp: %s", SMTPAllowedRecipients)
 	}
 
 	if err := parseRelayConfig(SMTPRelayConfigFile); err != nil {
 		return err
 	}
 
-	if !ReleaseEnabled && SMTPRelayAllIncoming {
-		return errors.New("SMTP relay config must be set to relay all messages")
+	// separate relay config validation to account for environment variables
+	if err := validateRelayConfig(); err != nil {
+		return err
 	}
 
-	if SMTPRelayAllIncoming {
+	if !ReleaseEnabled && SMTPRelayAll || !ReleaseEnabled && SMTPRelayMatching != "" {
+		return errors.New("[relay] a relay configuration must be set to auto-relay any messages")
+	}
+
+	if SMTPRelayMatching != "" {
+		if SMTPRelayAll {
+			logger.Log().Warnf("[relay] ignoring smtp-relay-matching when smtp-relay-all is enabled")
+		} else {
+			restrictRegexp, err := regexp.Compile(SMTPRelayMatching)
+			if err != nil {
+				return fmt.Errorf("[relay] failed to compile smtp-relay-matching regexp: %s", err.Error())
+			}
+
+			SMTPRelayMatchingRegexp = restrictRegexp
+			logger.Log().Infof("[relay] auto-relaying new messages to recipients matching \"%s\" via %s:%d",
+				SMTPRelayMatching, SMTPRelayConfig.Host, SMTPRelayConfig.Port)
+		}
+	}
+
+	if SMTPRelayAll {
 		// this deserves a warning
-		logger.Log().Warnf("[smtp] enabling automatic relay of all new messages via %s:%d", SMTPRelayConfig.Host, SMTPRelayConfig.Port)
+		logger.Log().Warnf("[relay] auto-relaying all new messages via %s:%d", SMTPRelayConfig.Host, SMTPRelayConfig.Port)
 	}
 
 	return nil
 }
 
-// Parse & validate the SMTPRelayConfigFile (if set)
+// Parse the SMTPRelayConfigFile (if set)
 func parseRelayConfig(c string) error {
 	if c == "" {
 		return nil
 	}
 
+	c = filepath.Clean(c)
+
 	if !isFile(c) {
-		return fmt.Errorf("SMTP relay configuration not found: %s", SMTPRelayConfigFile)
+		return fmt.Errorf("[smtp] relay configuration not found or readable: %s", c)
 	}
 
 	data, err := os.ReadFile(c)
@@ -271,7 +460,24 @@ func parseRelayConfig(c string) error {
 	}
 
 	if SMTPRelayConfig.Host == "" {
-		return errors.New("SMTP relay host not set")
+		return errors.New("[smtp] relay host not set")
+	}
+
+	// DEPRECATED 2024/03/12
+	if SMTPRelayConfig.RecipientAllowlist != "" {
+		logger.Log().Warn("[smtp] relay 'recipient-allowlist' is deprecated, use 'allowed-recipients' instead")
+		if SMTPRelayConfig.AllowedRecipients == "" {
+			SMTPRelayConfig.AllowedRecipients = SMTPRelayConfig.RecipientAllowlist
+		}
+	}
+
+	return nil
+}
+
+// Validate the SMTPRelayConfig (if Host is set)
+func validateRelayConfig() error {
+	if SMTPRelayConfig.Host == "" {
+		return nil
 	}
 
 	if SMTPRelayConfig.Port == 0 {
@@ -284,57 +490,62 @@ func parseRelayConfig(c string) error {
 		SMTPRelayConfig.Auth = "none"
 	} else if SMTPRelayConfig.Auth == "plain" {
 		if SMTPRelayConfig.Username == "" || SMTPRelayConfig.Password == "" {
-			return fmt.Errorf("SMTP relay host username or password not set for PLAIN authentication (%s)", c)
+			return fmt.Errorf("[smtp] relay host username or password not set for PLAIN authentication")
 		}
 	} else if SMTPRelayConfig.Auth == "login" {
 		SMTPRelayConfig.Auth = "login"
 		if SMTPRelayConfig.Username == "" || SMTPRelayConfig.Password == "" {
-			return fmt.Errorf("SMTP relay host username or password not set for LOGIN authentication (%s)", c)
+			return fmt.Errorf("[smtp] relay host username or password not set for LOGIN authentication")
 		}
 	} else if strings.HasPrefix(SMTPRelayConfig.Auth, "cram") {
 		SMTPRelayConfig.Auth = "cram-md5"
 		if SMTPRelayConfig.Username == "" || SMTPRelayConfig.Secret == "" {
-			return fmt.Errorf("SMTP relay host username or secret not set for CRAM-MD5 authentication (%s)", c)
+			return fmt.Errorf("[smtp] relay host username or secret not set for CRAM-MD5 authentication")
 		}
 	} else {
-		return fmt.Errorf("SMTP relay authentication method not supported: %s", SMTPRelayConfig.Auth)
+		return fmt.Errorf("[smtp] relay authentication method not supported: %s", SMTPRelayConfig.Auth)
 	}
 
 	ReleaseEnabled = true
 
 	logger.Log().Infof("[smtp] enabling message relaying via %s:%d", SMTPRelayConfig.Host, SMTPRelayConfig.Port)
 
-	allowlistRegexp, err := regexp.Compile(SMTPRelayConfig.RecipientAllowlist)
-
-	if SMTPRelayConfig.RecipientAllowlist != "" {
+	if SMTPRelayConfig.AllowedRecipients != "" {
+		allowlistRegexp, err := regexp.Compile(SMTPRelayConfig.AllowedRecipients)
 		if err != nil {
-			return fmt.Errorf("failed to compile recipient allowlist regexp: %e", err)
+			return fmt.Errorf("[smtp] failed to compile relay recipient allowlist regexp: %s", err.Error())
 		}
 
-		SMTPRelayConfig.RecipientAllowlistRegexp = allowlistRegexp
-		logger.Log().Infof("[smtp] recipient allowlist is active with the following regexp: %s", SMTPRelayConfig.RecipientAllowlist)
+		SMTPRelayConfig.AllowedRecipientsRegexp = allowlistRegexp
+		logger.Log().Infof("[smtp] relay recipient allowlist is active with the following regexp: %s", SMTPRelayConfig.AllowedRecipients)
 
 	}
 
 	return nil
 }
 
-// IsFile returns if a path is a file
+// IsFile returns whether a file exists and is readable
 func isFile(path string) bool {
-	info, err := os.Stat(path)
-	if os.IsNotExist(err) || !info.Mode().IsRegular() {
-		return false
-	}
-
-	return true
+	f, err := os.Open(filepath.Clean(path))
+	defer f.Close()
+	return err == nil
 }
 
 // IsDir returns whether a path is a directory
 func isDir(path string) bool {
 	info, err := os.Stat(path)
-	if os.IsNotExist(err) || !info.IsDir() {
+	if err != nil || os.IsNotExist(err) || !info.IsDir() {
 		return false
 	}
 
 	return true
 }
+
+func isValidURL(s string) bool {
+	u, err := url.ParseRequestURI(s)
+	if err != nil {
+		return false
+	}
+
+	return strings.HasPrefix(u.Scheme, "http")
+}

config/tags.go

@@ -0,0 +1,81 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/tools"
+	"gopkg.in/yaml.v3"
+)
+
+type yamlTags struct {
+	Filters []yamlTag `yaml:"filters"`
+}
+
+type yamlTag struct {
+	Match string `yaml:"match"`
+	Tags  string `yaml:"tags"`
+}
+
+// Load tags from a configuration from a file, if set
+func loadTagsFromConfig(c string) error {
+	if c == "" {
+		return nil // not set, ignore
+	}
+
+	c = filepath.Clean(c)
+
+	if !isFile(c) {
+		return fmt.Errorf("[tags] configuration file not found or unreadable: %s", c)
+	}
+
+	data, err := os.ReadFile(c)
+	if err != nil {
+		return fmt.Errorf("[tags] %s", err.Error())
+	}
+
+	conf := yamlTags{}
+
+	if err := yaml.Unmarshal(data, &conf); err != nil {
+		return err
+	}
+
+	if conf.Filters == nil {
+		return fmt.Errorf("[tags] missing tag: array in %s", c)
+	}
+
+	for _, t := range conf.Filters {
+		tags := strings.Split(t.Tags, ",")
+		TagFilters = append(TagFilters, autoTag{Match: t.Match, Tags: tags})
+	}
+
+	logger.Log().Debugf("[tags] loaded %s from config %s", tools.Plural(len(conf.Filters), "tag filter", "tag filters"), c)
+
+	return nil
+}
+
+func loadTagsFromArgs(c string) error {
+	if c == "" {
+		return nil // not set, ignore
+	}
+
+	args := tools.ArgsParser(c)
+
+	for _, a := range args {
+		t := strings.Split(a, "=")
+		if len(t) > 1 {
+			match := strings.TrimSpace(strings.ToLower(strings.Join(t[1:], "=")))
+			tags := strings.Split(t[0], ",")
+			TagFilters = append(TagFilters, autoTag{Match: match, Tags: tags})
+		} else {
+			return fmt.Errorf("[tag] error parsing tags (%s)", a)
+		}
+	}
+
+	logger.Log().Debugf("[tags] loaded %s from CLI args", tools.Plural(len(args), "tag filter", "tag filters"))
+
+	return nil
+}

docs/apiv1/Message.md

@@ -1,118 +0,0 @@
-# Message
-
-## Message summary
-
-Returns a JSON summary of the message and attachments.
-
-**URL** : `api/v1/message/<ID>`
-
-**Method** : `GET`
-
-## Response
-
-**Status** : `200`
-
-```json
-{
-  "ID": "d7a5543b-96dd-478b-9b60-2b465c9884de",
-  "MessageID": "12345.67890@localhost",
-  "Read": true,
-  "From": {
-    "Name": "John Doe",
-    "Address": "john@example.com"
-  },
-  "To": [
-    {
-      "Name": "Jane Smith",
-      "Address": "jane@example.com"
-    }
-  ],
-  "Cc": [],
-  "Bcc": [],
-  "ReplyTo": [],
-  "Subject": "Message subject",
-  "Date": "2016-09-07T16:46:00+13:00",
-  "Tags": ["test"],
-  "Text": "Plain text MIME part of the email",
-  "HTML": "HTML MIME part (if exists)",
-  "Size": 79499,
-  "Inline": [
-    {
-      "PartID": "1.2",
-      "FileName": "filename.gif",
-      "ContentType": "image/gif",
-      "ContentID": "919564503@07092006-1525",
-      "Size": 7760
-    }
-  ],
-  "Attachments": [
-    {
-      "PartID": "2",
-      "FileName": "filename.doc",
-      "ContentType": "application/msword",
-      "ContentID": "",
-      "Size": 43520
-    }
-  ]
-}
-```
-### Notes
-
-- `Read` - always true (message marked read on open)
-- `From` - Name & Address, or null
-- `To`, `CC`, `BCC`, `ReplyTo` - Array of Names & Address
-- `Date` - Parsed email local date & time from headers
-- `Size` - Total size of raw email
-- `Inline`, `Attachments` - Array of attachments and inline images.
-
-
----
-## Attachments
-
-**URL** : `api/v1/message/<ID>/part/<PartID>`
-
-**Method** : `GET`
-
-Returns the attachment using the MIME type provided by the attachment `ContentType`.
-
----
-## Headers
-
-**URL** : `api/v1/message/<ID>/headers`
-
-**Method** : `GET`
-
-Returns all message headers as a JSON array.
-Each unique header key contains an array of one or more values (email headers can be listed multiple times.)
-
-```json
-{
-  "Content-Type": [
-    "multipart/related; type=\"multipart/alternative\"; boundary=\"----=_NextPart_000_0013_01C6A60C.47EEAB80\""
-  ],
-  "Date": [
-    "Wed, 12 Jul 2006 23:38:30 +1200"
-  ],
-  "Delivered-To": [
-    "user@example.com",
-    "user-alias@example.com"
-  ],
-  "From": [
-    "\"User Name\" \\u003remote@example.com\\u003e"
-  ],
-  "Message-Id": [
-    "\\u003c001701c6a5a7$b3205580$0201010a@HomeOfficeSM\\u003e"
-  ],
-....
-}
-```
-
-
----
-## Raw (source) email
-
-**URL** : `api/v1/message/<ID>/raw`
-
-**Method** : `GET`
-
-Returns the original email source including headers and attachments.

docs/apiv1/Messages.md

@@ -1,169 +0,0 @@
-# Messages
-
-List & delete messages.
-
-
----
-## List
-
-List messages in the mailbox. Messages are returned in the order of latest received to oldest.
-
-**URL** : `api/v1/messages`
-
-**Method** : `GET`
-
-
-### Query parameters
-
-| Parameter | Type    | Required | Description                |
-|-----------|---------|----------|----------------------------|
-| limit     | integer | false    | Limit results (default 50) |
-| start     | integer | false    | Pagination offset          |
-
-
-### Response
-
-**Status** : `200`
-
-```json
-{
-  "total": 500,
-  "unread": 500,
-  "count": 50,
-  "start": 0,
-  "tags": ["test"],
-  "messages": [
-    {
-      "ID": "1c575821-70ba-466f-8cee-2e1cf0fcdd0f",
-      "MessageID": "12345.67890@localhost",
-      "Read": false,
-      "From": {
-        "Name": "John Doe",
-        "Address": "john@example.com"
-      },
-      "To": [
-        {
-          "Name": "Jane Smith",
-          "Address": "jane@example.com"
-        }
-      ],
-      "Cc": [
-        {
-          "Name": "Accounts",
-          "Address": "accounts@example.com"
-        }
-      ],
-      "Bcc": [],
-      "Subject": "Message subject",
-      "Created": "2022-10-03T21:35:32.228605299+13:00",
-      "Tags": ["test"],
-      "Size": 6144,
-      "Attachments": 0
-    },
-    ...
-  ]
-}
-```
-
-### Notes
-
-- `total` - Total messages in mailbox
-- `unread` - Total unread messages in mailbox
-- `count` - Number of messages returned in request
-- `start` - The offset (default `0`) for pagination
-- `Read` - The read/unread status of the message
-- `From` - Name & Address, or null if none
-- `To`, `CC`, `BCC` - Array of Names & Address
-- `Created` - Local date & time the message was received
-- `Size` - Total size of raw email in bytes
-
-
----
-## Delete individual messages
-
-Delete one or more messages by ID.
-
-**URL** : `api/v1/messages`
-
-**Method** : `DELETE`
-
-### Request
-
-```json
-{
-  "ids": ["<ID>","<ID>"...]
-}
-```
-
-### Response
-
-**Status** : `200`
-
-
----
-## Delete all messages
-
-Delete all messages (same as deleting individual messages, but with the "ids" either empty or omitted entirely).
-
-**URL** : `api/v1/messages`
-
-**Method** : `DELETE`
-
-### Request
-
-```json
-{
-  "ids": []
-}
-```
-
-### Response
-
-**Status** : `200`
-
-
----
-## Update individual read statuses
-
-Set the read status of one or more messages. 
-The `read` status can be `true` or `false`.
-
-**URL** : `api/v1/messages`
-
-**Method** : `PUT`
-
-### Request
-
-```json
-{
-  "ids": ["<ID>","<ID>"...],
-  "read": false
-}
-```
-
-### Response
-
-**Status** : `200`
-
----
-## Update all messages read status
-
-Set the read status of all messages. 
-The `read` status can be `true` or `false`.
-
-**URL** : `api/v1/messages`
-
-**Method** : `PUT`
-
-### Request
-
-```json
-{
-  "ids": [],
-  "read": false
-}
-```
-
-### Response
-
-**Status** : `200`

docs/apiv1/README.md

@@ -1,14 +0,0 @@
-# API v1
-
-Mailpit provides a simple REST API to access and delete stored messages.
-
-If the Mailpit server is set to use Basic Authentication, then API requests must use Basic Authentication too.
-
-You can view the Swagger API documentation directly within Mailpit by going to `http://0.0.0.0:8025/api/v1/`.
-
-The API is split into three main parts:
-
-- [Messages](Messages.md) - Listing, deleting & marking messages as read/unread.
-- [Message](Message.md) - Return message data & attachments
-- [Tags](Tags.md) - Set message tags
-- [Search](Search.md) - Searching messages

docs/apiv1/Search.md

@@ -1,70 +0,0 @@
-# Search
-
-**URL** : `api/v1/search?query=<string>`
-
-**Method** : `GET`
-
-The search returns the most recent matches (default 50).
-Matching messages are returned in the order of latest received to oldest.
-
-
-## Query parameters
-
-| Parameter | Type    | Required | Description                |
-|-----------|---------|----------|----------------------------|
-| query     | string  | true     | Search query               |
-| limit     | integer | false    | Limit results (default 50) |
-| start     | integer | false    | Pagination offset          |
-
-
-## Response
-
-**Status** : `200`
-
-```json
-{
-  "total": 500,
-  "unread": 500,
-  "count": 25,
-  "start": 0,
-  "messages": [
-    {
-      "ID": "1c575821-70ba-466f-8cee-2e1cf0fcdd0f",
-      "MessageID": "12345.67890@localhost",
-      "Read": false,
-      "From": {
-        "Name": "John Doe",
-        "Address": "john@example.com"
-      },
-      "To": [
-        {
-          "Name": "Jane Smith",
-          "Address": "jane@example.com"
-        }
-      ],
-      "Cc": [
-        {
-          "Name": "Accounts",
-          "Address": "accounts@example.com"
-        }
-      ],
-      "Bcc": [],
-      "Subject": "Test email",
-      "Created": "2022-10-03T21:35:32.228605299+13:00",
-      "Size": 6144,
-      "Attachments": 0
-    },
-    ...
-  ]
-}
-```
-
-### Notes
-
-- `total` - Total messages in mailbox (all messages, not search)
-- `unread` - Total unread messages in mailbox (all messages, not search)
-- `count` - Number of messages returned in request
-- `start` - The offset (default `0`) for pagination
-- `From` - Singular Name & Address, or null if none
-- `To`, `CC`, `BCC` - Array of Name & Address
-- `Size` - Total size of raw email in bytes

docs/apiv1/Tags.md

@@ -1,27 +0,0 @@
-# Tags
-
-Set message tags.
-
-
----
-## Update message tags
-
-Set the tags for one or more messages.
-If the tags array is empty then all tags are removed from the messages.
-
-**URL** : `api/v1/tags`
-
-**Method** : `PUT`
-
-### Request
-
-```json
-{
-  "ids": ["<ID>","<ID>"...],
-  "tags": ["<tag>","<tag>"]
-}
-```
-
-### Response
-
-**Status** : `200`

esbuild.config.mjs

@@ -14,6 +14,11 @@ const ctx = await esbuild.context(
         bundle: true,
         minify: doMinify,
         sourcemap: false,
+        define: {
+            '__VUE_OPTIONS_API__': 'true',
+            '__VUE_PROD_DEVTOOLS__': 'false',
+            '__VUE_PROD_HYDRATION_MISMATCH_DETAILS__': 'false',
+        },
         outdir: "server/ui/dist/",
         plugins: [pluginVue(), sassPlugin()],
         loader: {

go.mod

@@ -1,65 +1,67 @@
 module github.com/axllent/mailpit
 
-go 1.18
+go 1.21.0
+
+toolchain go1.22.1
 
 require (
-	github.com/GuiaBolso/darwin v0.0.0-20191218124601-fd6d2aa3d244
+	github.com/PuerkitoBio/goquery v1.9.2
+	github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de
 	github.com/axllent/semver v0.0.1
-	github.com/disintegration/imaging v1.6.2
-	github.com/gorilla/mux v1.8.0
-	github.com/gorilla/websocket v1.5.0
-	github.com/jhillyerd/enmime v0.11.1
-	github.com/k3a/html2text v1.2.1
-	github.com/klauspost/compress v1.16.5
+	github.com/gomarkdown/markdown v0.0.0-20240419095408-642f0ee99ae2
+	github.com/gorilla/mux v1.8.1
+	github.com/gorilla/websocket v1.5.1
+	github.com/jhillyerd/enmime v1.2.0
+	github.com/klauspost/compress v1.17.8
+	github.com/kovidgoyal/imaging v1.6.3
 	github.com/leporo/sqlf v1.4.0
-	github.com/mattn/go-shellwords v1.0.12
-	github.com/mhale/smtpd v0.8.0
+	github.com/lithammer/shortuuid/v4 v4.0.0
+	github.com/mhale/smtpd v0.8.3
 	github.com/reiver/go-telnet v0.0.0-20180421082511-9ff0b2ab096e
-	github.com/satori/go.uuid v1.2.0
-	github.com/sirupsen/logrus v1.9.2
-	github.com/spf13/cobra v1.7.0
+	github.com/rqlite/gorqlite v0.0.0-20240227123050-397b03f02418
+	github.com/sirupsen/logrus v1.9.3
+	github.com/spf13/cobra v1.8.0
 	github.com/spf13/pflag v1.0.5
-	github.com/tg123/go-htpasswd v1.2.1
-	golang.org/x/text v0.9.0
+	github.com/tg123/go-htpasswd v1.2.2
+	github.com/vanng822/go-premailer v1.21.0
+	golang.org/x/net v0.26.0
+	golang.org/x/text v0.16.0
+	golang.org/x/time v0.5.0
 	gopkg.in/yaml.v3 v3.0.1
-	modernc.org/sqlite v1.22.1
+	modernc.org/sqlite v1.30.0
 )
 
 require (
-	github.com/DATA-DOG/go-sqlmock v1.5.0 // indirect
 	github.com/GehirnInc/crypt v0.0.0-20230320061759-8cc1b52080c5 // indirect
+	github.com/andybalholm/cascadia v1.3.2 // indirect
 	github.com/cention-sany/utf7 v0.0.0-20170124080048-26cad61bd60a // indirect
-	github.com/cznic/ql v1.2.0 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/gogs/chardet v0.0.0-20211120154057-b7413eaefb8f // indirect
-	github.com/google/uuid v1.3.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/gorilla/css v1.0.1 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jaytaylor/html2text v0.0.0-20230321000545-74c2419ad056 // indirect
-	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
 	github.com/kr/pretty v0.3.0 // indirect
-	github.com/mattn/go-isatty v0.0.19 // indirect
-	github.com/mattn/go-runewidth v0.0.14 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/ncruces/go-strftime v0.1.9 // indirect
 	github.com/olekukonko/tablewriter v0.0.5 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/reiver/go-oi v1.0.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
-	github.com/rivo/uniseg v0.4.4 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	golang.org/x/crypto v0.9.0 // indirect
-	golang.org/x/image v0.7.0 // indirect
-	golang.org/x/mod v0.10.0 // indirect
-	golang.org/x/net v0.10.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
-	golang.org/x/tools v0.9.3 // indirect
+	github.com/vanng822/css v1.0.1 // indirect
+	golang.org/x/crypto v0.24.0 // indirect
+	golang.org/x/image v0.17.0 // indirect
+	golang.org/x/sys v0.21.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
-	lukechampine.com/uint128 v1.3.0 // indirect
-	modernc.org/cc/v3 v3.40.0 // indirect
-	modernc.org/ccgo/v3 v3.16.13 // indirect
-	modernc.org/libc v1.22.6 // indirect
-	modernc.org/mathutil v1.5.0 // indirect
-	modernc.org/memory v1.5.0 // indirect
-	modernc.org/opt v0.1.3 // indirect
-	modernc.org/strutil v1.1.3 // indirect
+	modernc.org/gc/v3 v3.0.0-20240304020402-f0dba7c97c2b // indirect
+	modernc.org/libc v1.52.1 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.8.0 // indirect
+	modernc.org/strutil v1.2.0 // indirect
 	modernc.org/token v1.1.0 // indirect
 )

go.sum

@@ -1,72 +1,53 @@
-github.com/DATA-DOG/go-sqlmock v1.5.0 h1:Shsta01QNfFxHCfpW6YH2STWB0MudeXXEWMr20OEh60=
-github.com/DATA-DOG/go-sqlmock v1.5.0/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/GehirnInc/crypt v0.0.0-20230320061759-8cc1b52080c5 h1:IEjq88XO4PuBDcvmjQJcQGg+w+UaafSy8G5Kcb5tBhI=
 github.com/GehirnInc/crypt v0.0.0-20230320061759-8cc1b52080c5/go.mod h1:exZ0C/1emQJAw5tHOaUDyY1ycttqBAPcxuzf7QbY6ec=
-github.com/GuiaBolso/darwin v0.0.0-20191218124601-fd6d2aa3d244 h1:dqzm54OhCqY8RinR/cx+Ppb0y56Ds5I3wwWhx4XybDg=
-github.com/GuiaBolso/darwin v0.0.0-20191218124601-fd6d2aa3d244/go.mod h1:3sqgkckuISJ5rs1EpOp6vCvwOUKe/z9vPmyuIlq8Q/A=
+github.com/PuerkitoBio/goquery v1.9.1/go.mod h1:cW1n6TmIMDoORQU5IU/P1T3tGFunOeXEpGP2WHRwkbY=
+github.com/PuerkitoBio/goquery v1.9.2 h1:4/wZksC3KgkQw7SQgkKotmKljk0M6V8TUvA8Wb4yPeE=
+github.com/PuerkitoBio/goquery v1.9.2/go.mod h1:GHPCaP0ODyyxqcNoFGYlAprUFH81NuRPd0GX3Zu2Mvk=
+github.com/andybalholm/cascadia v1.3.2 h1:3Xi6Dw5lHF15JtdcmAHD3i1+T8plmv7BQ/nsViSLyss=
+github.com/andybalholm/cascadia v1.3.2/go.mod h1:7gtRlve5FxPPgIgX36uWBX58OdBsSS6lUvCFb+h7KvU=
+github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de h1:FxWPpzIjnTlhPwqqXc4/vE0f7GvRjuAsbW+HOIe8KnA=
+github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de/go.mod h1:DCaWoUhZrYW9p1lxo/cm8EmUOOzAPSEZNGF2DK1dJgw=
 github.com/axllent/semver v0.0.1 h1:QqF+KSGxgj8QZzSXAvKFqjGWE5792ksOnQhludToK8E=
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@@ -123,38 +104,51 @@ github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf/go.mod h1:RJID2RhlZKId02n
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@@ -163,24 +157,35 @@ golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBc
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@@ -190,27 +195,29 @@ gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
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internal/auth/auth.go

@@ -0,0 +1,90 @@
+// Package auth handles the web UI and SMTP authentication
+package auth
+
+import (
+	"regexp"
+	"strings"
+
+	"github.com/tg123/go-htpasswd"
+)
+
+var (
+	// UICredentials passwords
+	UICredentials *htpasswd.File
+	// SMTPCredentials passwords
+	SMTPCredentials *htpasswd.File
+	// POP3Credentials passwords
+	POP3Credentials *htpasswd.File
+)
+
+// SetUIAuth will set Basic Auth credentials required for the UI & API
+func SetUIAuth(s string) error {
+	var err error
+
+	credentials := credentialsFromString(s)
+	if len(credentials) == 0 {
+		return nil
+	}
+
+	r := strings.NewReader(strings.Join(credentials, "\n"))
+
+	UICredentials, err = htpasswd.NewFromReader(r, htpasswd.DefaultSystems, nil)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// SetSMTPAuth will set SMTP credentials
+func SetSMTPAuth(s string) error {
+	var err error
+
+	credentials := credentialsFromString(s)
+	if len(credentials) == 0 {
+		return nil
+	}
+
+	r := strings.NewReader(strings.Join(credentials, "\n"))
+
+	SMTPCredentials, err = htpasswd.NewFromReader(r, htpasswd.DefaultSystems, nil)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// SetPOP3Auth will set POP3 server credentials
+func SetPOP3Auth(s string) error {
+	var err error
+
+	credentials := credentialsFromString(s)
+	if len(credentials) == 0 {
+		return nil
+	}
+
+	r := strings.NewReader(strings.Join(credentials, "\n"))
+
+	POP3Credentials, err = htpasswd.NewFromReader(r, htpasswd.DefaultSystems, nil)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func credentialsFromString(s string) []string {
+	// split string by any whitespace character
+	re := regexp.MustCompile(`\s+`)
+
+	words := re.Split(s, -1)
+	credentials := []string{}
+	for _, w := range words {
+		if w != "" {
+			credentials = append(credentials, w)
+		}
+	}
+
+	return credentials
+}

internal/html2text/html2text.go

@@ -0,0 +1,82 @@
+// Package html2text is a simple library to convert HTML to plain text
+package html2text
+
+import (
+	"bytes"
+	"log"
+	"regexp"
+	"strings"
+	"unicode"
+
+	"golang.org/x/net/html"
+)
+
+var (
+	re      = regexp.MustCompile(`\s+`)
+	spaceRe = regexp.MustCompile(`(?mi)<\/(div|p|td|th|h[1-6]|ul|ol|li|address|article|aside|blockquote|dl|dt|footer|header|hr|main|nav|pre|table|thead|tfoot|video)><`)
+	brRe    = regexp.MustCompile(`(?mi)<(br /|br)>`)
+	imgRe   = regexp.MustCompile(`(?mi)<(img)`)
+	skip    = make(map[string]bool)
+)
+
+func init() {
+	skip["script"] = true
+	skip["title"] = true
+	skip["head"] = true
+	skip["link"] = true
+	skip["meta"] = true
+	skip["style"] = true
+	skip["noscript"] = true
+}
+
+// Strip will convert a HTML string to plain text
+func Strip(h string, includeLinks bool) string {
+	h = spaceRe.ReplaceAllString(h, "</$1> <")
+	h = brRe.ReplaceAllString(h, " ")
+	h = imgRe.ReplaceAllString(h, " <$1")
+	var buffer bytes.Buffer
+	doc, err := html.Parse(strings.NewReader(h))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	extract(doc, &buffer, includeLinks)
+	return clean(buffer.String())
+}
+
+func extract(node *html.Node, buff *bytes.Buffer, includeLinks bool) {
+	if node.Type == html.TextNode {
+		data := node.Data
+		if data != "" {
+			buff.WriteString(data)
+		}
+	}
+	for c := node.FirstChild; c != nil; c = c.NextSibling {
+		if _, skip := skip[c.Data]; !skip {
+			if includeLinks && c.Data == "a" {
+				for _, a := range c.Attr {
+					if a.Key == "href" && strings.HasPrefix(strings.ToLower(a.Val), "http") {
+						buff.WriteString(" " + a.Val + " ")
+					}
+				}
+			}
+			extract(c, buff, includeLinks)
+		}
+	}
+}
+
+func clean(text string) string {
+	// replace \uFEFF with space, see https://github.com/golang/go/issues/42274#issuecomment-1017258184
+	text = strings.ReplaceAll(text, string('\uFEFF'), " ")
+
+	// remove non-printable characters
+	text = strings.Map(func(r rune) rune {
+		if unicode.IsPrint(r) {
+			return r
+		}
+		return []rune(" ")[0]
+	}, text)
+
+	text = re.ReplaceAllString(text, " ")
+	return strings.TrimSpace(text)
+}

internal/html2text/html2text_test.go

@@ -0,0 +1,250 @@
+package html2text
+
+import "testing"
+
+func TestPlain(t *testing.T) {
+	tests := map[string]string{}
+	tests["this is a  test"] = "this is a test"
+	tests["thiS IS a Test"] = "thiS IS a Test"
+	tests["thiS IS a Test :-)"] = "thiS IS a Test :-)"
+	tests["<h1>This is a test.</h1> "] = "This is a test."
+	tests["<p>Paragraph 1</p><p>Paragraph 2</p>"] = "Paragraph 1 Paragraph 2"
+	tests["<h1>Heading</h1><p>Paragraph</p>"] = "Heading Paragraph"
+	tests["<span>Alpha</span>bet <strong>chars</strong>"] = "Alphabet chars"
+	tests["<span><b>A</b>lpha</span>bet  chars."] = "Alphabet chars."
+	tests["<table><tr><td>First</td><td>Second</td></table>"] = "First Second"
+	tests[`<h1>Heading</h1>
+		<p>Paragraph</p>`] = "Heading Paragraph"
+	tests[`<h1>Heading</h1><p>   <a href="https://github.com">linked text</a></p>`] = "Heading linked text"
+	// broken html
+	tests[`<h1>Heading</h3><p>   <a href="https://github.com">linked text.`] = "Heading linked text."
+
+	for str, expected := range tests {
+		res := Strip(str, false)
+		if res != expected {
+			t.Log("error:", res, "!=", expected)
+			t.Fail()
+		}
+	}
+}
+
+func TestWithLinks(t *testing.T) {
+	tests := map[string]string{}
+	tests["this is a  test"] = "this is a test"
+	tests["thiS IS a Test"] = "thiS IS a Test"
+	tests["thiS IS a Test :-)"] = "thiS IS a Test :-)"
+	tests["<h1>This is a test.</h1> "] = "This is a test."
+	tests["<p>Paragraph 1</p><p>Paragraph 2</p>"] = "Paragraph 1 Paragraph 2"
+	tests["<h1>Heading</h1><p>Paragraph</p>"] = "Heading Paragraph"
+	tests["<span>Alpha</span>bet <strong>chars</strong>"] = "Alphabet chars"
+	tests["<span><b>A</b>lpha</span>bet  chars."] = "Alphabet chars."
+	tests["<table><tr><td>First</td><td>Second</td></table>"] = "First Second"
+	tests["<h1>Heading</h1><p>Paragraph</p>"] = "Heading Paragraph"
+	tests[`<h1>Heading</h1>
+		<p>Paragraph</p>`] = "Heading Paragraph"
+	tests[`<h1>Heading</h1><p>   <a href="https://github.com">linked text</a></p>`] = "Heading https://github.com linked text"
+	// broken html
+	tests[`<h1>Heading</h3><p>   <a href="https://github.com">linked text.`] = "Heading https://github.com linked text."
+
+	for str, expected := range tests {
+		res := Strip(str, true)
+		if res != expected {
+			t.Log("error:", res, "!=", expected)
+			t.Fail()
+		}
+	}
+}
+
+func BenchmarkPlain(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		Strip(htmlTestData, false)
+	}
+}
+
+func BenchmarkLinks(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		Strip(htmlTestData, true)
+	}
+}
+
+var htmlTestData = `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en" style="font-family: sans-serif; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; box-sizing: border-box;" xml:lang="en">
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    <meta name="viewport" content="width=device-width" />
+    <title>[axllent/mailpit] Run failed: .github/workflows/tests.yml - feature/swagger (284335a)</title>
+    
+  </head>
+  <body style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot;; font-size: 14px; line-height: 1.5; color: #24292e; background-color: #fff; margin: 0;" bgcolor="#fff">
+    <table align="center" class="container-sm width-full" width="100%" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; max-width: 544px; margin-right: auto; margin-left: auto; width: 100% !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+      <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+        <td class="center p-3" align="center" valign="top" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 16px;">
+          <center style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+            <table border="0" cellspacing="0" cellpadding="0" align="center" class="width-full container-md" width="100%" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; max-width: 768px; margin-right: auto; margin-left: auto; width: 100% !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <td align="center" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">
+              <table style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tbody style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+      <td height="16" style="font-size: 16px; line-height: 16px; box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">&#160;</td>
+    </tr>
+  </tbody>
+</table>
+
+              <table border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+                <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+                  <td class="text-left" style="box-sizing: border-box; text-align: left !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;" align="left">
+                    <img src="https://github.githubassets.com/images/email/global/octocat-logo.png" alt="GitHub" width="32" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; border-style: none;" />
+                    <h2 class="lh-condensed mt-2 text-normal" style="box-sizing: border-box; margin-top: 8px !important; margin-bottom: 0; font-size: 24px; font-weight: 400 !important; line-height: 1.25 !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+                        [axllent/mailpit] .github/workflows/tests.yml workflow run
+
+                    </h2>
+                  </td>
+                </tr>
+              </table>
+              <table style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tbody style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+      <td height="16" style="font-size: 16px; line-height: 16px; box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">&#160;</td>
+    </tr>
+  </tbody>
+</table>
+
+</td>
+  </tr>
+</table>
+            <table width="100%" class="width-full" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; width: 100% !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+              <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+                <td class="border rounded-2 d-block" style="box-sizing: border-box; border-radius: 6px !important; display: block !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0; border: 1px solid #e1e4e8;">
+                  <table align="center" class="width-full text-center" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; width: 100% !important; text-align: center !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+                    <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+                      <td style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">
+                        <table border="0" cellspacing="0" cellpadding="0" align="center" class="width-full" width="100%" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; width: 100% !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <td align="center" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">
+                          
+<table align="center" class="border-bottom width-full text-center" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; border-bottom-width: 1px !important; border-bottom-color: #e1e4e8 !important; border-bottom-style: solid !important; width: 100% !important; text-align: center !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <td class="d-block px-3 pt-3 p-sm-4" style="box-sizing: border-box; display: block !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 24px;">
+      <table border="0" cellspacing="0" cellpadding="0" align="center" class="width-full" width="100%" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; width: 100% !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <td align="center" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">
+        
+    <img src="https://github.githubassets.com/images/email/icons/actions.png" width="56" height="56" alt="" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; border-style: none;" />
+  <table style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tbody style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+      <td height="12" style="font-size: 12px; line-height: 12px; box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">&#160;</td>
+    </tr>
+  </tbody>
+</table>
+
+<h3 class="lh-condensed" style="box-sizing: border-box; margin-top: 0; margin-bottom: 0; font-size: 20px; font-weight: 600; line-height: 1.25 !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">.github/workflows/tests.yml: No jobs were run</h3>
+<table style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tbody style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+      <td height="16" style="font-size: 16px; line-height: 16px; box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">&#160;</td>
+    </tr>
+  </tbody>
+</table>
+
+
+
+  <table border="0" cellspacing="0" cellpadding="0" align="center" class="width-full" width="100%" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; width: 100% !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <td align="center" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">
+    <table width="100%" border="0" cellspacing="0" cellpadding="0" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <td style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">
+      <table border="0" cellspacing="0" cellpadding="0" width="100%" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+        <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+          <td align="center" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">
+              <!--[if mso]> <table><tr><td align="center" bgcolor="#28a745"> <![endif]-->
+                <a href="https://github.com/axllent/mailpit/actions/runs/6522820865" target="_blank" rel="noopener noreferrer" class="btn btn-large btn-primary" style="background-color: #1f883d !important; box-sizing: border-box; color: #fff; text-decoration: none; position: relative; display: inline-block; font-size: inherit; font-weight: 500; line-height: 1.5; white-space: nowrap; vertical-align: middle; cursor: pointer; -webkit-user-select: none; user-select: none; border-radius: .5em; -webkit-appearance: none; appearance: none; box-shadow: 0 1px 0 rgba(27,31,35,.1),inset 0 1px 0 rgba(255,255,255,.03); transition: background-color .2s cubic-bezier(0.3, 0, 0.5, 1); font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: .75em 1.5em; border: 1px solid #1f883d;">View workflow run</a>
+              <!--[if mso]> </td></tr></table> <![endif]-->
+          </td>
+        </tr>
+      </table>
+    </td>
+  </tr>
+</table>
+
+</td>
+  </tr>
+</table>
+  <table style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tbody style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+      <td height="32" style="font-size: 32px; line-height: 32px; box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">&#160;</td>
+    </tr>
+  </tbody>
+</table>
+
+
+</td>
+  </tr>
+</table>
+    </td>
+  </tr>
+</table>
+
+
+
+
+</td>
+  </tr>
+</table>
+                      </td>
+                    </tr>
+                  </table>
+                </td>
+              </tr>
+            </table>
+            <table border="0" cellspacing="0" cellpadding="0" align="center" class="width-full text-center" width="100%" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; width: 100% !important; text-align: center !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <td align="center" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">
+              <table style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tbody style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+      <td height="16" style="font-size: 16px; line-height: 16px; box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">&#160;</td>
+    </tr>
+  </tbody>
+</table>
+
+              <table style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tbody style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+      <td height="16" style="font-size: 16px; line-height: 16px; box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">&#160;</td>
+    </tr>
+  </tbody>
+</table>
+
+              <p class="f5 text-gray-light" style="box-sizing: border-box; margin-top: 0; margin-bottom: 10px; color: #6a737d !important; font-size: 14px !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">  </p><p style="font-size: small; -webkit-text-size-adjust: none; color: #666; box-sizing: border-box; margin-top: 0; margin-bottom: 10px; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">&#8212;<br style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;" />You are receiving this because you are subscribed to this thread.<br style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;" /><a href="https://github.com/settings/notifications" style="background-color: transparent; box-sizing: border-box; color: #0366d6; text-decoration: none; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">Manage your GitHub Actions notifications</a></p>
+
+</td>
+  </tr>
+</table>
+            <table border="0" cellspacing="0" cellpadding="0" align="center" class="width-full text-center" width="100%" style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; width: 100% !important; text-align: center !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <td align="center" style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">
+  <table style="box-sizing: border-box; border-spacing: 0; border-collapse: collapse; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+  <tbody style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+    <tr style="box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">
+      <td height="16" style="font-size: 16px; line-height: 16px; box-sizing: border-box; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important; padding: 0;">&#160;</td>
+    </tr>
+  </tbody>
+</table>
+
+  <p class="f6 text-gray-light" style="box-sizing: border-box; margin-top: 0; margin-bottom: 10px; color: #6a737d !important; font-size: 12px !important; font-family: -apple-system,BlinkMacSystemFont,&quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot; !important;">GitHub, Inc. &#12539;88 Colin P Kelly Jr Street &#12539;San Francisco, CA 94107</p>
+</td>
+  </tr>
+</table>
+
+          </center>
+        </td>
+      </tr>
+    </table>
+    <!-- prevent Gmail on iOS font size manipulation -->
+   <div style="display: none; white-space: nowrap; box-sizing: border-box; font: 15px/0 apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot;;"> &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; </div>
+  </body>
+</html>`

internal/htmlcheck/README.md

@@ -0,0 +1,5 @@
+# HTML check
+
+The database used for HTML support tests is based on [can I email](https://www.caniemail.com/).
+
+The `caniemail-data.json` file used to determine client support is copied from the [API](https://www.caniemail.com/api/data.json)

internal/htmlcheck/caniemail.go

@@ -0,0 +1,74 @@
+// Package htmlcheck is used for parsing HTML and returning
+// HTML compatibility errors and warnings
+package htmlcheck
+
+import (
+	"embed"
+	"encoding/json"
+	"regexp"
+)
+
+//go:embed caniemail-data.json
+var embeddedFS embed.FS
+
+var (
+	cie = CanIEmail{}
+
+	noteMatch = regexp.MustCompile(` #(\d)+$`)
+
+	// LimitFamilies will limit results to families if set
+	LimitFamilies = []string{}
+
+	// LimitPlatforms will limit results to platforms if set
+	LimitPlatforms = []string{}
+
+	// LimitClients will limit results to clients if set
+	LimitClients = []string{}
+)
+
+// CanIEmail struct for JSON data
+type CanIEmail struct {
+	APIVersion     string `json:"api_version"`
+	LastUpdateDate string `json:"last_update_date"`
+	// NiceNames map[string]string `json:"last_update_date"`
+	NiceNames struct {
+		Family   map[string]string `json:"family"`
+		Platform map[string]string `json:"platform"`
+		Support  map[string]string `json:"support"`
+		Category map[string]string `json:"category"`
+	} `json:"nicenames"`
+	Data []JSONResult `json:"data"`
+}
+
+// JSONResult struct for CanIEmail Data
+type JSONResult struct {
+	Slug           string                 `json:"slug"`
+	Title          string                 `json:"title"`
+	Description    string                 `json:"description"`
+	URL            string                 `json:"url"`
+	Category       string                 `json:"category"`
+	Tags           []string               `json:"tags"`
+	Keywords       string                 `json:"keywords"`
+	LastTestDate   string                 `json:"last_test_date"`
+	TestURL        string                 `json:"test_url"`
+	TestResultsURL string                 `json:"test_results_url"`
+	Stats          map[string]interface{} `json:"stats"`
+	Notes          string                 `json:"notes"`
+	NotesByNumber  map[string]string      `json:"notes_by_num"`
+}
+
+// Load the JSON data
+func loadJSONData() error {
+	if cie.APIVersion != "" {
+		return nil
+	}
+
+	b, err := embeddedFS.ReadFile("caniemail-data.json")
+	if err != nil {
+		return err
+	}
+
+	cie = CanIEmail{}
+
+	return json.Unmarshal(b, &cie)
+}

internal/htmlcheck/config.go

@@ -0,0 +1,204 @@
+package htmlcheck
+
+import "regexp"
+
+// HTML tests
+var htmlTests = map[string]string{
+	// body check is manually done because it always exists in *goquery.Document
+	"html-body": "body",
+	// HTML tests
+	"html-object":         "object, embed, image, pdf",
+	"html-link":           "link",
+	"html-hr":             "hr",
+	"html-dialog":         "dialog",
+	"html-srcset":         "[srcset]",
+	"html-picture":        "picture",
+	"html-svg":            "svg",
+	"html-progress":       "progress",
+	"html-required":       "[required]",
+	"html-meter":          "meter",
+	"html-audio":          "audio",
+	"html-form":           "form",
+	"html-input-submit":   "submit",
+	"html-button-reset":   "button[type=\"reset\"]",
+	"html-button-submit":  "submit, button[type=\"submit\"]",
+	"html-base":           "base",
+	"html-input-checkbox": "checkbox",
+	"html-input-hidden":   "[type=\"hidden\"]",
+	"html-input-radio":    "radio",
+	"html-input-text":     "input[type=\"text\"]",
+	"html-video":          "video",
+	"html-semantics":      "article, aside, details, figcaption, figure, footer, header, main, mark, nav, section, summary, time",
+	"html-select":         "select",
+	"html-textarea":       "textarea",
+	"html-anchor-links":   "a[href^=\"#\"]",
+	"html-style":          "style",
+	"html-image-maps":     "map, img[usemap]",
+}
+
+// Image tests using regex to match against img[src]
+var imageRegexpTests = map[string]*regexp.Regexp{
+	"image-apng":   regexp.MustCompile(`(?i)\.apng$`),       // 78.723404
+	"image-avif":   regexp.MustCompile(`(?i)\.avif$`),       // 14.864864
+	"image-base64": regexp.MustCompile(`^(?i)data:image\/`), // 61.702126
+	"image-bmp":    regexp.MustCompile(`(?i)\.bmp$`),        // 89.3617
+	"image-gif":    regexp.MustCompile(`(?i)\.gif$`),        // 89.3617
+	"image-hdr":    regexp.MustCompile(`(?i)\.hdr$`),        // 12.5
+	"image-heif":   regexp.MustCompile(`(?i)\.heif$`),       // 0
+	"image-ico":    regexp.MustCompile(`(?i)\.ico$`),        // 87.23404
+	"image-mp4":    regexp.MustCompile(`(?i)\.mp4$`),        // 26.53061
+	"image-ppm":    regexp.MustCompile(`(?i)\.ppm$`),        // 2.0833282
+	"image-svg":    regexp.MustCompile(`(?i)\.svg$`),        // 64.91228
+	"image-tiff":   regexp.MustCompile(`(?i)\.tiff?$`),      // 38.29787
+	"image-webp":   regexp.MustCompile(`(?i)\.webp$`),       // 59.649124
+}
+
+var cssInlineTests = map[string]string{
+	"css-accent-color":                   "[style*=\"accent-color:\"]",                                           // 6.6666718
+	"css-align-items":                    "[style*=\"align-items:\"]",                                            // 60.784313
+	"css-aspect-ratio":                   "[style*=\"aspect-ratio:\"]",                                           // 30
+	"css-background-blend-mode":          "[style*=\"background-blend-mode:\"]",                                  // 61.70213
+	"css-background-clip":                "[style*=\"background-clip:\"]",                                        // 61.70213
+	"css-background-color":               "[style*=\"background-color:\"], [bgcolor]",                            // 90
+	"css-background-image":               "[style*=\"background-image:\"]",                                       // 57.62712
+	"css-background-origin":              "[style*=\"background-origin:\"]",                                      // 61.70213
+	"css-background-position":            "[style*=\"background-position:\"]",                                    // 61.224487
+	"css-background-repeat":              "[style*=\"background-repeat:\"]",                                      // 67.34694
+	"css-background-size":                "[style*=\"background-size:\"]",                                        // 61.702126
+	"css-background":                     "[style*=\"background:\"], [background]",                               // 57.407406
+	"css-block-inline-size":              "[style*=\"block-inline-size:\"]",                                      // 46.93877
+	"css-border-image":                   "[style*=\"border-image:\"]",                                           // 52.173912
+	"css-border-inline-block-individual": "[style*=\"border-inline:\"]",                                          // 18.518517
+	"css-border-radius":                  "[style*=\"border-radius:\"]",                                          // 67.34694
+	"css-border":                         "[style*=\"border:\"], [border]",                                       // 86.95652
+	"css-box-shadow":                     "[style*=\"box-shadow:\"]",                                             // 43.103447
+	"css-box-sizing":                     "[style*=\"box-sizing:\"]",                                             // 71.739136
+	"css-caption-side":                   "[style*=\"caption-side:\"]",                                           // 84
+	"css-clip-path":                      "[style*=\"clip-path:\"]",                                              // 43.396225
+	"css-column-count":                   "[style*=\"column-count:\"]",                                           // 67.391304
+	"css-column-layout-properties":       "[style*=\"column-layout-properties:\"]",                               // 47.368423
+	"css-conic-gradient":                 "[style*=\"conic-gradient:\"]",                                         // 38.461536
+	"css-direction":                      "[style*=\"direction:\"]",                                              // 97.77778
+	"css-display-flex":                   "[style*=\"display:flex\"]",                                            // 53.448277
+	"css-display-grid":                   "[style*=\"display:grid\"]",                                            // 54.347824
+	"css-display-none":                   "[style*=\"display:none\"]",                                            // 84.78261
+	"css-display":                        "[style*=\"display:\"]",                                                // 55.555553
+	"css-filter":                         "[style*=\"filter:\"]",                                                 // 50
+	"css-flex-direction":                 "[style*=\"flex-direction:\"]",                                         // 50
+	"css-flex-wrap":                      "[style*=\"flex-wrap:\"]",                                              // 49.09091
+	"css-float":                          "[style*=\"float:\"]",                                                  // 85.10638
+	"css-font-kerning":                   "[style*=\"font-kerning:\"]",                                           // 66.666664
+	"css-font-weight":                    "[style*=\"font-weight:\"]",                                            // 76.666664
+	"css-font":                           "[style*=\"font:\"]",                                                   // 95.833336
+	"css-gap":                            "[style*=\"gap:\"]",                                                    // 40
+	"css-grid-template":                  "[style*=\"grid-template:\"]",                                          // 34.042553
+	"css-height":                         "[style*=\"height:\"], [height]",                                       // 77.08333
+	"css-hyphens":                        "[style*=\"hyphens:\"]",                                                // 31.111107
+	"css-important":                      "[style*=\"!important\"]",                                              // 43.478264
+	"css-inline-size":                    "[style*=\"inline-size:\"]",                                            // 43.478264
+	"css-intrinsic-size":                 "[style*=\"intrinsic-size:\"]",                                         // 40.54054
+	"css-justify-content":                "[style*=\"justify-content:\"]",                                        // 59.25926
+	"css-letter-spacing":                 "[style*=\"letter-spacing:\"]",                                         // 87.23404
+	"css-line-height":                    "[style*=\"line-height:\"]",                                            // 82.608696
+	"css-list-style-image":               "[style*=\"list-style-image:\"]",                                       // 54.16667
+	"css-list-style-position":            "[style*=\"list-style-position:\"]",                                    // 87.5
+	"css-list-style":                     "[style*=\"list-style:\"]",                                             // 62.500004
+	"css-margin-block-start-end":         "[style*=\"margin-block-start:\"], [style*=\"margin-block-end:\"]",     // 32.07547
+	"css-margin-inline-block":            "[style*=\"margin-inline-block:\"]",                                    // 16.981125
+	"css-margin-inline-start-end":        "[style*=\"margin-inline-start:\"], [style*=\"margin-inline-end:\"]",   // 32.07547
+	"css-margin-inline":                  "[style*=\"margin-inline:\"]",                                          // 43.39623
+	"css-margin":                         "[style*=\"margin:\"]",                                                 // 71.42857
+	"css-max-block-size":                 "[style*=\"max-block-size:\"]",                                         // 35.714287
+	"css-max-height":                     "[style*=\"max-height:\"]",                                             // 86.95652
+	"css-max-width":                      "[style*=\"max-width:\"]",                                              // 76.47058
+	"css-min-height":                     "[style*=\"min-height:\"]",                                             // 82.608696
+	"css-min-inline-size":                "[style*=\"min-inline-size:\"]",                                        // 33.33333
+	"css-min-width":                      "[style*=\"min-width:\"]",                                              // 86.95652
+	"css-mix-blend-mode":                 "[style*=\"mix-blend-mode:\"]",                                         // 62.745094
+	"css-modern-color":                   "[style*=\"modern-color:\"]",                                           // 10.81081
+	"css-object-fit":                     "[style*=\"object-fit:\"]",                                             // 57.142857
+	"css-object-position":                "[style*=\"object-position:\"]",                                        // 55.10204
+	"css-opacity":                        "[style*=\"opacity:\"]",                                                // 63.04348
+	"css-outline-offset":                 "[style*=\"outline-offset:\"]",                                         // 42.5
+	"css-outline":                        "[style*=\"outline:\"]",                                                // 80.85106
+	"css-overflow-wrap":                  "[style*=\"overflow-wrap:\"]",                                          // 6.6666603
+	"css-overflow":                       "[style*=\"overflow:\"]",                                               // 78.26087
+	"css-padding-block-start-end":        "[style*=\"padding-block-start:\"], [style*=\"padding-block-end:\"]",   // 32.07547
+	"css-padding-inline-block":           "[style*=\"padding-inline-block:\"]",                                   // 16.981125
+	"css-padding-inline-start-end":       "[style*=\"padding-inline-start:\"], [style*=\"padding-inline-end:\"]", // 32.07547
+	"css-padding":                        "[style*=\"padding:\"], [padding]",                                     // 87.755104
+	"css-position":                       "[style*=\"position:\"]",                                               // 19.56522
+	"css-radial-gradient":                "[style*=\"radial-gradient:\"]",                                        // 64.583336
+	"css-rgb":                            "[style*=\"rgb(\"]",                                                    // 53.846153
+	"css-rgba":                           "[style*=\"rgba(\"]",                                                   // 56
+	"css-scroll-snap":                    "[style*=\"roll-snap:\"]",                                              // 38.88889
+	"css-tab-size":                       "[style*=\"tab-size:\"]",                                               // 32.075474
+	"css-table-layout":                   "[style*=\"table-layout:\"]",                                           // 53.33333
+	"css-text-align-last":                "[style*=\"text-align-last:\"]",                                        // 42.307693
+	"css-text-align":                     "[style*=\"text-align:\"]",                                             // 60.416664
+	"css-text-decoration-color":          "[style*=\"text-decoration-color:\"]",                                  // 67.34695
+	"css-text-decoration-thickness":      "[style*=\"text-decoration-thickness:\"]",                              // 38.333336
+	"css-text-decoration":                "[style*=\"text-decoration:\"]",                                        // 67.391304
+	"css-text-emphasis-position":         "[style*=\"text-emphasis-position:\"]",                                 // 28.571434
+	"css-text-emphasis":                  "[style*=\"text-emphasis:\"]",                                          // 36.734695
+	"css-text-indent":                    "[style*=\"text-indent:\"]",                                            // 78.43137
+	"css-text-overflow":                  "[style*=\"text-overflow:\"]",                                          // 58.695656
+	"css-text-shadow":                    "[style*=\"text-shadow:\"]",                                            // 69.565216
+	"css-text-transform":                 "[style*=\"text-transform:\"]",                                         // 86.666664
+	"css-text-underline-offset":          "[style*=\"text-underline-offset:\"]",                                  // 39.285713
+	"css-transform":                      "[style*=\"transform:\"]",                                              // 50
+	"css-unit-calc":                      "[style*=\"calc(:\"]",                                                  // 56.25
+	"css-variables":                      "[style*=\"variables:\"]",                                              // 46.551727
+	"css-visibility":                     "[style*=\"visibility:\"]",                                             // 52.173916
+	"css-white-space":                    "[style*=\"white-space:\"]",                                            // 58.69565
+	"css-width":                          "[style*=\"width:\"], [width]",                                         // 87.5
+	"css-word-break":                     "[style*=\"word-break:\"]",                                             // 28.888887
+	"css-writing-mode":                   "[style*=\"writing-mode:\"]",                                           // 56.25
+	"css-z-index":                        "[style*=\"z-index:\"]",                                                // 76.08696
+}
+
+// some CSS tests using regex for things that can't be merged inline
+var cssRegexpTests = map[string]*regexp.Regexp{
+	"css-at-font-face":                  regexp.MustCompile(`(?mi)@font\-face\s+?{`),        // 26.923073
+	"css-at-import":                     regexp.MustCompile(`(?mi)@import\s`),               // 36.170216
+	"css-at-keyframes":                  regexp.MustCompile(`(?mi)@keyframes\s`),            // 31.914898
+	"css-at-media":                      regexp.MustCompile(`(?mi)@media\s?\(`),             // 47.05882
+	"css-at-supports":                   regexp.MustCompile(`(?mi)@supports\s?\(`),          // 40.81633
+	"css-pseudo-class-active":           regexp.MustCompile(`:active`),                      // 52.173912
+	"css-pseudo-class-checked":          regexp.MustCompile(`:checked`),                     // 31.91489
+	"css-pseudo-class-first-child":      regexp.MustCompile(`:first\-child`),                // 66.666664
+	"css-pseudo-class-first-of-type":    regexp.MustCompile(`:first\-of\-type`),             // 62.5
+	"css-pseudo-class-focus":            regexp.MustCompile(`:focus`),                       // 47.826088
+	"css-pseudo-class-has":              regexp.MustCompile(`:has`),                         // 25.531914
+	"css-pseudo-class-hover":            regexp.MustCompile(`:hover`),                       // 60.41667
+	"css-pseudo-class-lang":             regexp.MustCompile(`:lang\s?\(`),                   // 18.918922
+	"css-pseudo-class-last-child":       regexp.MustCompile(`:last\-child`),                 // 64.58333
+	"css-pseudo-class-last-of-type":     regexp.MustCompile(`:last\-of\-type`),              // 60.416664
+	"css-pseudo-class-link":             regexp.MustCompile(`:link`),                        // 81.63265
+	"css-pseudo-class-not":              regexp.MustCompile(`:not(\s+)?\(`),                 // 44.89796
+	"css-pseudo-class-nth-child":        regexp.MustCompile(`:nth\-child(\s+)?\(`),          // 44.89796
+	"css-pseudo-class-nth-last-child":   regexp.MustCompile(`:nth\-last\-child(\s+)?\(`),    // 44.89796
+	"css-pseudo-class-nth-last-of-type": regexp.MustCompile(`:nth\-last\-of\-type(\s+)?\(`), // 42.857143
+	"css-pseudo-class-nth-of-type":      regexp.MustCompile(`:nth\-of\-type(\s+)?\(`),       // 42.857143
+	"css-pseudo-class-only-child":       regexp.MustCompile(`:only\-child(\s+)?\(`),         // 64.58333
+	"css-pseudo-class-only-of-type":     regexp.MustCompile(`:only\-of\-type(\s+)?\(`),      // 64.58333
+	"css-pseudo-class-target":           regexp.MustCompile(`:target`),                      // 39.13044
+	"css-pseudo-class-visited":          regexp.MustCompile(`:visited`),                     // 39.13044
+	"css-pseudo-element-after":          regexp.MustCompile(`:after`),                       // 40
+	"css-pseudo-element-before":         regexp.MustCompile(`:before`),                      // 40
+	"css-pseudo-element-first-letter":   regexp.MustCompile(`::first\-letter`),              // 60
+	"css-pseudo-element-first-line":     regexp.MustCompile(`::first\-line`),                // 60
+	"css-pseudo-element-marker":         regexp.MustCompile(`::marker`),                     // 50
+	"css-pseudo-element-placeholder":    regexp.MustCompile(`::placeholder`),                // 32
+}
+
+// some CSS tests using regex for units
+var cssRegexpUnitTests = map[string]*regexp.Regexp{
+	"css-unit-ch":      regexp.MustCompile(`\b\d+ch\b`),     // 66.666664
+	"css-unit-initial": regexp.MustCompile(`:\s?initial\b`), // 58.33333
+	"css-unit-rem":     regexp.MustCompile(`\b\d+rem\b`),    // 66.666664
+	"css-unit-vh":      regexp.MustCompile(`\b\d+vh\b`),     // 68.75
+	"css-unit-vmax":    regexp.MustCompile(`\b\d+vmax\b`),   // 60.416664
+	"css-unit-vmin":    regexp.MustCompile(`\b\d+vmin\b`),   // 58.333336
+	"css-unit-vw":      regexp.MustCompile(`\b\d+vw\b`),     // 77.08333
+}

internal/htmlcheck/css.go

@@ -0,0 +1,217 @@
+package htmlcheck
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/PuerkitoBio/goquery"
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/tools"
+	"github.com/vanng822/go-premailer/premailer"
+	"golang.org/x/net/html"
+	"golang.org/x/net/html/atom"
+)
+
+// Go cannot calculate any rendered CSS attributes, so we merge all styles
+// into the HTML and detect elements with styles containing the keywords.
+func runCSSTests(html string) ([]Warning, int, error) {
+	results := []Warning{}
+	totalTests := 0
+
+	inlined, err := inlineRemoteCSS(html)
+	if err != nil {
+		inlined = html
+	}
+
+	// merge all CSS inline
+	merged, err := mergeInlineCSS(inlined)
+	if err != nil {
+		merged = inlined
+	}
+
+	reader := strings.NewReader(merged)
+
+	// Load the HTML document
+	doc, err := goquery.NewDocumentFromReader(reader)
+	if err != nil {
+		return results, totalTests, err
+	}
+
+	for key, test := range cssInlineTests {
+		totalTests++
+		found := len(doc.Find(test).Nodes)
+		if found > 0 {
+			result, err := cie.getTest(key)
+			if err != nil {
+				return results, totalTests, err
+			}
+			result.Score.Found = found
+			results = append(results, result)
+		}
+	}
+
+	// get a list of all generated styles from all nodes
+	allNodeStyles := []string{}
+	for _, n := range doc.Find("*[style]").Nodes {
+		style, err := tools.GetHTMLAttributeVal(n, "style")
+		if err == nil {
+			allNodeStyles = append(allNodeStyles, style)
+		}
+	}
+
+	for key, re := range cssRegexpUnitTests {
+		totalTests++
+		result, err := cie.getTest(key)
+		if err != nil {
+			return results, totalTests, err
+		}
+
+		found := 0
+		// loop through all styles to count total
+		for _, styles := range allNodeStyles {
+			found = found + len(re.FindAllString(styles, -1))
+		}
+
+		if found > 0 {
+			result.Score.Found = found
+			results = append(results, result)
+		}
+	}
+
+	// get all inline CSS block data
+	reader = strings.NewReader(inlined)
+
+	// Load the HTML document
+	doc, _ = goquery.NewDocumentFromReader(reader)
+
+	cssCode := ""
+	for _, n := range doc.Find("style").Nodes {
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			cssCode = cssCode + c.Data
+		}
+	}
+
+	for key, re := range cssRegexpTests {
+		totalTests++
+		result, err := cie.getTest(key)
+		if err != nil {
+			return results, totalTests, err
+		}
+
+		found := len(re.FindAllString(cssCode, -1))
+		if found > 0 {
+			result.Score.Found = found
+			results = append(results, result)
+		}
+	}
+
+	return results, totalTests, nil
+}
+
+// MergeInlineCSS merges header CSS into element attributes
+func mergeInlineCSS(html string) (string, error) {
+	options := premailer.NewOptions()
+	// options.RemoveClasses = true
+	// options.CssToAttributes = false
+	options.KeepBangImportant = true
+	pre, err := premailer.NewPremailerFromString(html, options)
+	if err != nil {
+		return "", err
+	}
+
+	return pre.Transform()
+}
+
+// InlineRemoteCSS searches the HTML for linked stylesheets, downloads the content, and
+// inserts new <style> blocks into the head, unless BlockRemoteCSSAndFonts is set
+func inlineRemoteCSS(h string) (string, error) {
+	reader := strings.NewReader(h)
+
+	// Load the HTML document
+	doc, err := goquery.NewDocumentFromReader(reader)
+	if err != nil {
+		return h, err
+	}
+
+	remoteCSS := doc.Find("link[rel=\"stylesheet\"]").Nodes
+	for _, link := range remoteCSS {
+		attributes := link.Attr
+		for _, a := range attributes {
+			if a.Key == "href" {
+				if !isURL(a.Val) {
+					// skip invalid URL
+					continue
+				}
+
+				if config.BlockRemoteCSSAndFonts {
+					logger.Log().Debugf("[html-check] skip testing remote CSS content: %s (--block-remote-css-and-fonts)", a.Val)
+					return h, nil
+				}
+
+				resp, err := downloadToBytes(a.Val)
+				if err != nil {
+					logger.Log().Warnf("[html-check] failed to download %s", a.Val)
+					continue
+				}
+
+				// create new <style> block and insert downloaded CSS
+				styleBlock := &html.Node{
+					Type:     html.ElementNode,
+					Data:     "style",
+					DataAtom: atom.Style,
+				}
+				styleBlock.AppendChild(&html.Node{
+					Type: html.TextNode,
+					Data: string(resp),
+				})
+
+				link.Parent.AppendChild(styleBlock)
+			}
+		}
+	}
+
+	newDoc, err := doc.Html()
+	if err != nil {
+		logger.Log().Warnf("[html-check] failed to download %s", err.Error())
+		return h, err
+	}
+
+	return newDoc, nil
+}
+
+// DownloadToBytes returns a []byte slice from a URL
+func downloadToBytes(url string) ([]byte, error) {
+	client := http.Client{
+		Timeout: 5 * time.Second,
+	}
+
+	// Get the link response data
+	resp, err := client.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		err := fmt.Errorf("Error downloading %s", url)
+		return nil, err
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	return body, nil
+}
+
+// Test if str is a URL
+func isURL(str string) bool {
+	u, err := url.Parse(str)
+	return err == nil && (u.Scheme == "http" || u.Scheme == "https") && u.Host != ""
+}

internal/htmlcheck/html.go

@@ -0,0 +1,102 @@
+package htmlcheck
+
+import (
+	"regexp"
+	"strings"
+
+	"github.com/PuerkitoBio/goquery"
+	"github.com/axllent/mailpit/internal/tools"
+)
+
+// HTML tests
+func runHTMLTests(html string) ([]Warning, int, error) {
+	results := []Warning{}
+	totalTests := 0
+
+	reader := strings.NewReader(html)
+
+	// Load the HTML document
+	doc, err := goquery.NewDocumentFromReader(reader)
+	if err != nil {
+		return results, totalTests, err
+	}
+
+	// Almost all <script> is bad
+	scripts := len(doc.Find("script:not([type=\"application/ld+json\"]):not([type=\"application/json\"])").Nodes)
+	if scripts > 0 {
+		var result = Warning{}
+		result.Title = "<script> element"
+		result.Slug = "html-script"
+		result.Category = "html"
+		result.Description = "JavaScript is not supported in any email client."
+		result.Tags = []string{}
+		result.Results = []Result{}
+		result.NotesByNumber = map[string]string{}
+		result.Score.Found = scripts
+		result.Score.Supported = 0
+		result.Score.Partial = 0
+		result.Score.Unsupported = 100
+		results = append(results, result)
+		totalTests++
+	}
+
+	for key, test := range htmlTests {
+		totalTests++
+		if test == "body" {
+			re := regexp.MustCompile(`(?im)</body>`)
+			if re.MatchString(html) {
+				result, err := cie.getTest(key)
+				if err != nil {
+					return results, totalTests, err
+				}
+
+				result.Score.Found = 1
+				results = append(results, result)
+			}
+		} else if len(doc.Find(test).Nodes) > 0 {
+			result, err := cie.getTest(key)
+			if err != nil {
+				return results, totalTests, err
+			}
+			totalTests++
+
+			result.Score.Found = len(doc.Find(test).Nodes)
+
+			results = append(results, result)
+		}
+	}
+
+	// find all images
+	images := doc.Find("img[src]").Nodes
+	imageResults := make(map[string]int)
+	totalTests = totalTests + len(imageRegexpTests)
+
+	for _, image := range images {
+		src, err := tools.GetHTMLAttributeVal(image, "src")
+		if err != nil {
+			continue
+		}
+		for key, test := range imageRegexpTests {
+			if test.MatchString(src) {
+				matches, exists := imageResults[key]
+				if exists {
+					imageResults[key] = matches + 1
+				} else {
+					imageResults[key] = 1
+				}
+
+			}
+		}
+	}
+
+	for key, found := range imageResults {
+		result, err := cie.getTest(key)
+		if err != nil {
+			return results, totalTests, err
+		}
+		result.Score.Found = found
+		results = append(results, result)
+	}
+
+	return results, totalTests, nil
+}

internal/htmlcheck/main.go

@@ -0,0 +1,201 @@
+package htmlcheck
+
+import (
+	"fmt"
+	"regexp"
+	"sort"
+	"strings"
+
+	"github.com/PuerkitoBio/goquery"
+	"github.com/axllent/mailpit/internal/tools"
+	"github.com/gomarkdown/markdown"
+	"github.com/gomarkdown/markdown/html"
+	"github.com/gomarkdown/markdown/parser"
+)
+
+// RunTests will run all tests on an HTML string
+func RunTests(html string) (Response, error) {
+	s := Response{}
+	s.Warnings = []Warning{}
+	if platforms, err := Platforms(); err == nil {
+		s.Platforms = platforms
+	}
+
+	s.Total = Total{}
+
+	// crude way to determine whether the HTML contains a <body> structure
+	// or whether it's just plain HTML content
+	re := regexp.MustCompile(`(?im)</body>`)
+	nodeMatch := "body *, script"
+	if re.MatchString(html) {
+		nodeMatch = "*:not(html):not(head):not(meta), script"
+	}
+	reader := strings.NewReader(html)
+	// Load the HTML document
+	doc, err := goquery.NewDocumentFromReader(reader)
+	if err != nil {
+		return s, err
+	}
+	// calculate the number of nodes in HTML
+	s.Total.Nodes = len(doc.Find(nodeMatch).Nodes)
+
+	if err := loadJSONData(); err != nil {
+		return s, err
+	}
+
+	// HTML tests
+	htmlResults, totalTests, err := runHTMLTests(html)
+	if err != nil {
+		return s, err
+	}
+
+	s.Total.Tests = s.Total.Tests + totalTests
+
+	// add html test totals
+	s.Warnings = append(s.Warnings, htmlResults...)
+
+	// CSS tests
+	cssResults, totalTests, err := runCSSTests(html)
+	if err != nil {
+		return s, err
+	}
+
+	s.Total.Tests = s.Total.Tests + totalTests
+
+	// add css test totals
+	s.Warnings = append(s.Warnings, cssResults...)
+
+	// calculate total score
+	var partial, unsupported float32
+	partial = 0
+	unsupported = 0
+
+	for _, w := range s.Warnings {
+		if w.Score.Found == 0 {
+			continue
+		}
+
+		// supported is calculated by subtracting partial and unsupported from 100%
+		if w.Score.Partial > 0 {
+			weighted := w.Score.Partial * float32(w.Score.Found) / float32(s.Total.Nodes)
+			if weighted > partial {
+				partial = weighted
+			}
+		}
+		if w.Score.Unsupported > 0 {
+			weighted := w.Score.Unsupported * float32(w.Score.Found) / float32(s.Total.Nodes)
+			if weighted > unsupported {
+				unsupported = weighted
+			}
+		}
+	}
+
+	s.Total.Supported = 100 - partial - unsupported
+	s.Total.Partial = partial
+	s.Total.Unsupported = unsupported
+
+	// sort slice to get lowest scores first
+	sort.Slice(s.Warnings, func(i, j int) bool {
+		return (s.Warnings[i].Score.Unsupported+s.Warnings[i].Score.Partial)*float32(s.Warnings[i].Score.Found)/float32(s.Total.Nodes) >
+			(s.Warnings[j].Score.Unsupported+s.Warnings[j].Score.Partial)*float32(s.Warnings[j].Score.Found)/float32(s.Total.Nodes)
+	})
+
+	return s, nil
+}
+
+// Test returns a test
+func (c CanIEmail) getTest(k string) (Warning, error) {
+	warning := Warning{}
+	exists := false
+	found := JSONResult{}
+	for _, r := range cie.Data {
+		if r.Slug == k {
+			found = r
+			exists = true
+			break
+		}
+	}
+
+	if !exists {
+		return warning, fmt.Errorf("%s does not exist", k)
+	}
+
+	warning.Slug = found.Slug
+	warning.Title = found.Title
+	warning.Description = mdToHTML(found.Description)
+	warning.Category = found.Category
+	warning.URL = found.URL
+	warning.Tags = found.Tags
+	// warning.Keywords = found.Keywords
+	// warning.Notes = found.Notes
+	warning.NotesByNumber = make(map[string]string, len(found.NotesByNumber))
+	for nr, note := range found.NotesByNumber {
+		warning.NotesByNumber[nr] = mdToHTML(note)
+	}
+	warning.Results = []Result{}
+
+	var y, n, p float32
+
+	for family, stats := range found.Stats {
+		if len(LimitFamilies) != 0 && !tools.InArray(family, LimitFamilies) {
+			continue
+		}
+
+		for platform, clients := range stats.(map[string]interface{}) {
+			if len(LimitPlatforms) != 0 && !tools.InArray(platform, LimitPlatforms) {
+				continue
+			}
+			for version, support := range clients.(map[string]interface{}) {
+				s := Result{}
+				s.Name = fmt.Sprintf("%s %s (%s)", c.NiceNames.Family[family], c.NiceNames.Platform[platform], version)
+				s.Family = family
+				s.Platform = platform
+				s.Version = version
+
+				if support == "y" {
+					y++
+					s.Support = "yes"
+				} else if support == "n" {
+					n++
+					s.Support = "no"
+				} else {
+					p++
+					s.Support = "partial"
+
+					noteIDS := noteMatch.FindStringSubmatch(fmt.Sprintf("%s", support))
+
+					for _, id := range noteIDS {
+						s.NoteNumber = id
+					}
+				}
+
+				warning.Results = append(warning.Results, s)
+			}
+		}
+
+	}
+
+	total := y + n + p
+	warning.Score.Supported = y / total * 100
+	warning.Score.Unsupported = n / total * 100
+	warning.Score.Partial = p / total * 100
+
+	return warning, nil
+}
+
+// Convert markdown to HTML, stripping <p> & </p>
+func mdToHTML(str string) string {
+	md := []byte(str)
+	// create markdown parser with extensions
+	extensions := parser.CommonExtensions | parser.AutoHeadingIDs | parser.NoEmptyLineBeforeBlock
+	// extensions := parser.NoExtensions
+	p := parser.NewWithExtensions(extensions)
+	doc := p.Parse(md)
+
+	// create HTML renderer with extensions
+	htmlFlags := html.CommonFlags | html.HrefTargetBlank
+	opts := html.RendererOptions{Flags: htmlFlags}
+	renderer := html.NewRenderer(opts)
+
+	return strings.TrimSuffix(strings.TrimPrefix(strings.TrimSpace(string(markdown.Render(doc, renderer))), "<p>"), "</p>")
+}

internal/htmlcheck/platforms.go

@@ -0,0 +1,42 @@
+package htmlcheck
+
+import (
+	"sort"
+
+	"github.com/axllent/mailpit/internal/tools"
+)
+
+// Platforms returns all platforms with their respective email clients
+func Platforms() (map[string][]string, error) {
+	// [platform]clients
+	data := make(map[string][]string)
+
+	if err := loadJSONData(); err != nil {
+		return data, err
+	}
+
+	for _, t := range cie.Data {
+		for family, stats := range t.Stats {
+			niceFamily := cie.NiceNames.Family[family]
+			for platform := range stats.(map[string]interface{}) {
+				c, found := data[platform]
+				if !found {
+					data[platform] = []string{}
+				}
+				if !tools.InArray(niceFamily, c) {
+					c = append(c, niceFamily)
+					data[platform] = c
+				}
+			}
+		}
+	}
+
+	for group, clients := range data {
+		sort.Slice(clients, func(i, j int) bool {
+			return clients[i] < clients[j]
+		})
+		data[group] = clients
+	}
+
+	return data, nil
+}

internal/htmlcheck/structs.go

@@ -0,0 +1,87 @@
+package htmlcheck
+
+// Response represents the HTML check response struct
+//
+// swagger:model HTMLCheckResponse
+type Response struct {
+	// List of warnings from tests
+	Warnings []Warning `json:"Warnings"`
+	// All platforms tested, mainly for the web UI
+	Platforms map[string][]string `json:"Platforms"`
+	// Total overall score
+	Total Total `json:"Total"`
+}
+
+// Warning represents a failed test
+//
+// swagger:model HTMLCheckWarning
+type Warning struct {
+	// Slug identifier
+	Slug string `json:"Slug"`
+	// Friendly title
+	Title string `json:"Title"`
+	// Description
+	Description string `json:"Description"`
+	// URL to caniemail.com
+	URL string `json:"URL"`
+	// Category [css, html]
+	Category string `json:"Category"`
+	// Tags
+	Tags []string `json:"Tags"`
+	// Keywords
+	Keywords string `json:"Keywords"`
+	// Test results
+	Results []Result `json:"Results"`
+	// Notes based on results
+	NotesByNumber map[string]string `json:"NotesByNumber"`
+	// Test score calculated from results
+	Score Score `json:"Score"`
+}
+
+// Result struct
+//
+// swagger:model HTMLCheckResult
+type Result struct {
+	// Friendly name of result, combining family, platform & version
+	Name string `json:"Name"`
+	// Platform eg: ios, android, windows
+	Platform string `json:"Platform"`
+	// Family eg: Outlook, Mozilla Thunderbird
+	Family string `json:"Family"`
+	// Family version eg: 4.7.1, 2019-10, 10.3
+	Version string `json:"Version"`
+	// Support [yes, no, partial]
+	Support string `json:"Support"`
+	// Note number for partially supported if applicable
+	NoteNumber string `json:"NoteNumber"` // where applicable
+}
+
+// Score struct
+//
+// swagger:model HTMLCheckScore
+type Score struct {
+	// Number of matches in the document
+	Found int `json:"Found"`
+	// Total percentage supported
+	Supported float32 `json:"Supported"`
+	// Total percentage partially supported
+	Partial float32 `json:"Partial"`
+	// Total percentage unsupported
+	Unsupported float32 `json:"Unsupported"`
+}
+
+// Total weighted result for all scores
+//
+// swagger:model HTMLCheckTotal
+type Total struct {
+	// Total number of tests done
+	Tests int `json:"Tests"`
+	// Total number of HTML nodes detected in message
+	Nodes int `json:"Nodes"`
+	// Overall percentage supported
+	Supported float32 `json:"Supported"`
+	// Overall percentage partially supported
+	Partial float32 `json:"Partial"` // total percentage
+	// Overall percentage unsupported
+	Unsupported float32 `json:"Unsupported"` // total percentage
+}

internal/linkcheck/main.go

@@ -0,0 +1,90 @@
+// Package linkcheck handles message links checking
+package linkcheck
+
+import (
+	"regexp"
+	"strings"
+
+	"github.com/PuerkitoBio/goquery"
+	"github.com/axllent/mailpit/internal/storage"
+	"github.com/axllent/mailpit/internal/tools"
+)
+
+var linkRe = regexp.MustCompile(`(?m)\b(http|ftp|https):\/\/([\w_-]+(?:(?:\.[\w_-]+)+))([\w.,@?^=%&:'!\/~+#-]*[\w@?^=%&\/~+#-])`)
+
+// RunTests will run all tests on an HTML string
+func RunTests(msg *storage.Message, followRedirects bool) (Response, error) {
+	s := Response{}
+
+	allLinks := extractHTMLLinks(msg)
+	allLinks = strUnique(append(allLinks, extractTextLinks(msg)...))
+	s.Links = getHTTPStatuses(allLinks, followRedirects)
+
+	for _, l := range s.Links {
+		if l.StatusCode >= 400 || l.StatusCode == 0 {
+			s.Errors++
+		}
+	}
+
+	return s, nil
+}
+
+func extractTextLinks(msg *storage.Message) []string {
+	links := []string{}
+
+	links = append(links, linkRe.FindAllString(msg.Text, -1)...)
+
+	return links
+}
+
+func extractHTMLLinks(msg *storage.Message) []string {
+	links := []string{}
+
+	reader := strings.NewReader(msg.HTML)
+
+	// Load the HTML document
+	doc, err := goquery.NewDocumentFromReader(reader)
+	if err != nil {
+		return links
+	}
+
+	aLinks := doc.Find("a[href]").Nodes
+	for _, link := range aLinks {
+		l, err := tools.GetHTMLAttributeVal(link, "href")
+		if err == nil && linkRe.MatchString(l) {
+			links = append(links, l)
+		}
+	}
+
+	cssLinks := doc.Find("link[rel=\"stylesheet\"]").Nodes
+	for _, link := range cssLinks {
+		l, err := tools.GetHTMLAttributeVal(link, "href")
+		if err == nil && linkRe.MatchString(l) {
+			links = append(links, l)
+		}
+	}
+
+	imgLinks := doc.Find("img[src]").Nodes
+	for _, link := range imgLinks {
+		l, err := tools.GetHTMLAttributeVal(link, "src")
+		if err == nil && linkRe.MatchString(l) {
+			links = append(links, l)
+		}
+	}
+
+	return links
+}
+
+// strUnique return a slice of unique strings from a slice
+func strUnique(strSlice []string) []string {
+	keys := make(map[string]bool)
+	list := []string{}
+	for _, entry := range strSlice {
+		if _, value := keys[entry]; !value {
+			keys[entry] = true
+			list = append(list, entry)
+		}
+	}
+
+	return list
+}

internal/linkcheck/status.go

@@ -0,0 +1,114 @@
+package linkcheck
+
+import (
+	"crypto/tls"
+	"net/http"
+	"regexp"
+	"sync"
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+)
+
+func getHTTPStatuses(links []string, followRedirects bool) []Link {
+	// allow 5 threads
+	threads := make(chan int, 5)
+
+	results := make(map[string]Link, len(links))
+	resultsMutex := sync.RWMutex{}
+
+	output := []Link{}
+
+	var wg sync.WaitGroup
+
+	for _, l := range links {
+		wg.Add(1)
+		go func(link string, w *sync.WaitGroup) {
+			threads <- 1 // will block if MAX threads
+			defer w.Done()
+
+			code, err := doHead(link, followRedirects)
+			l := Link{}
+			l.URL = link
+			if err != nil {
+				l.StatusCode = 0
+				l.Status = httpErrorSummary(err)
+			} else {
+				l.StatusCode = code
+				l.Status = http.StatusText(code)
+			}
+			resultsMutex.Lock()
+			results[link] = l
+			resultsMutex.Unlock()
+
+			<-threads // remove from threads
+		}(l, &wg)
+	}
+
+	wg.Wait()
+
+	for _, l := range results {
+		output = append(output, l)
+	}
+
+	return output
+}
+
+// Do a HEAD request to return HTTP status code
+func doHead(link string, followRedirects bool) (int, error) {
+
+	timeout := time.Duration(10 * time.Second)
+
+	tr := &http.Transport{}
+
+	if config.AllowUntrustedTLS {
+		tr.TLSClientConfig = &tls.Config{InsecureSkipVerify: true} // #nosec
+	}
+
+	client := http.Client{
+		Timeout:   timeout,
+		Transport: tr,
+		CheckRedirect: func(req *http.Request, via []*http.Request) error {
+			if followRedirects {
+				return nil
+			}
+			return http.ErrUseLastResponse
+		},
+	}
+
+	req, err := http.NewRequest("HEAD", link, nil)
+	if err != nil {
+		logger.Log().Errorf("[link-check] %s", err.Error())
+		return 0, err
+	}
+
+	req.Header.Set("User-Agent", "Mailpit/"+config.Version)
+
+	res, err := client.Do(req)
+	if err != nil {
+		if res != nil {
+			return res.StatusCode, err
+		}
+
+		return 0, err
+
+	}
+
+	return res.StatusCode, nil
+}
+
+// HTTP errors include a lot more info that just the actual error, so this
+// tries to take the final part of it, eg: `no such host`
+func httpErrorSummary(err error) string {
+	var re = regexp.MustCompile(`.*: (.*)$`)
+
+	e := err.Error()
+	if !re.MatchString(e) {
+		return e
+	}
+
+	parts := re.FindAllStringSubmatch(e, -1)
+
+	return parts[0][len(parts[0])-1]
+}

internal/linkcheck/structs.go

@@ -0,0 +1,21 @@
+package linkcheck
+
+// Response represents the Link check response
+//
+// swagger:model LinkCheckResponse
+type Response struct {
+	// Total number of errors
+	Errors int `json:"Errors"`
+	// Tested links
+	Links []Link `json:"Links"`
+}
+
+// Link struct
+type Link struct {
+	// Link URL
+	URL string `json:"URL"`
+	// HTTP status code
+	StatusCode int `json:"StatusCode"`
+	// HTTP status definition
+	Status string `json:"Status"`
+}

internal/logger/logger.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"path/filepath"
 	"regexp"
 
 	"github.com/sirupsen/logrus"
@@ -18,6 +19,8 @@ var (
 	QuietLogging bool
 	// NoLogging shows only fatal errors
 	NoLogging bool
+	// LogFile sets a log file
+	LogFile string
 )
 
 // Log returns the logger instance
@@ -36,11 +39,21 @@ func Log() *logrus.Logger {
 			log.SetLevel(logrus.PanicLevel)
 		}
 
-		log.Out = os.Stdout
+		if LogFile != "" {
+			file, err := os.OpenFile(filepath.Clean(LogFile), os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0664) // #nosec
+			if err == nil {
+				log.Out = file
+			} else {
+				log.Out = os.Stdout
+				log.Warn("Failed to log to file, using default stderr")
+			}
+		} else {
+			log.Out = os.Stdout
+		}
+
 		log.SetFormatter(&logrus.TextFormatter{
 			FullTimestamp:   true,
 			TimestampFormat: "2006/01/02 15:04:05",
-			ForceColors:     true,
 		})
 	}
 

internal/spamassassin/postmark/postmark.go

@@ -0,0 +1,100 @@
+// Package postmark uses the free https://spamcheck.postmarkapp.com/
+// See https://spamcheck.postmarkapp.com/doc/ for more details.
+package postmark
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"regexp"
+	"strings"
+	"time"
+)
+
+// Response struct
+type Response struct {
+	Success bool   `json:"success"`
+	Message string `json:"message"` // for errors only
+	Score   string `json:"score"`
+	Rules   []Rule `json:"rules"`
+	Report  string `json:"report"` // ignored
+}
+
+// Rule struct
+type Rule struct {
+	Score string `json:"score"`
+	// Name not returned by postmark but rather extracted from description
+	Name        string `json:"name"`
+	Description string `json:"description"`
+}
+
+// Check will post the email data to Postmark
+func Check(email []byte, timeout int) (Response, error) {
+	r := Response{}
+	// '{"email":"raw dump of email", "options":"short"}'
+	var d struct {
+		// The raw dump of the email to be filtered, including all headers.
+		Email string `json:"email"`
+		// Default "long". Must either be "long" for a full report of processing rules, or "short" for a score request.
+		Options string `json:"options"`
+	}
+
+	d.Email = string(email)
+	d.Options = "long"
+
+	data, err := json.Marshal(d)
+	if err != nil {
+		return r, err
+	}
+
+	client := http.Client{
+		Timeout: time.Duration(timeout) * time.Second,
+	}
+
+	resp, err := client.Post("https://spamcheck.postmarkapp.com/filter", "application/json",
+		bytes.NewBuffer(data))
+
+	if err != nil {
+		return r, err
+	}
+
+	defer resp.Body.Close()
+
+	err = json.NewDecoder(resp.Body).Decode(&r)
+
+	// remove trailing line spaces for all lines in report
+	re := regexp.MustCompile("\r?\n")
+	lines := re.Split(r.Report, -1)
+	reportLines := []string{}
+	for _, l := range lines {
+		line := strings.TrimRight(l, " ")
+		reportLines = append(reportLines, line)
+	}
+	reportRaw := strings.Join(reportLines, "\n")
+
+	// join description lines to make a single line per rule
+	re2 := regexp.MustCompile("\n                                ")
+	report := re2.ReplaceAllString(reportRaw, "")
+	for i, rule := range r.Rules {
+		// populate rule name
+		r.Rules[i].Name = nameFromReport(rule.Score, rule.Description, report)
+	}
+
+	return r, err
+}
+
+// Extract the name of the test from the report as Postmark does not include this in the JSON reports
+func nameFromReport(score, description, report string) string {
+	score = regexp.QuoteMeta(score)
+	description = regexp.QuoteMeta(description)
+	str := fmt.Sprintf("%s\\s+([A-Z0-9\\_]+)\\s+%s", score, description)
+	re := regexp.MustCompile(str)
+
+	matches := re.FindAllStringSubmatch(report, 1)
+	if len(matches) > 0 && len(matches[0]) == 2 {
+		return strings.TrimSpace(matches[0][1])
+	}
+
+	return ""
+}

internal/spamassassin/spamassassin.go

@@ -0,0 +1,147 @@
+// Package spamassassin will return results from either a SpamAssassin server or
+// Postmark's public API depending on configuration
+package spamassassin
+
+import (
+	"errors"
+	"math"
+	"strconv"
+	"strings"
+
+	"github.com/axllent/mailpit/internal/spamassassin/postmark"
+	"github.com/axllent/mailpit/internal/spamassassin/spamc"
+)
+
+var (
+	// Service to use, either "<host>:<ip>" for self-hosted SpamAssassin or "postmark"
+	service string
+
+	// SpamScore is the score at which a message is determined to be spam
+	spamScore = 5.0
+
+	// Timeout in seconds
+	timeout = 8
+)
+
+// Result is a SpamAssassin result
+//
+// swagger:model SpamAssassinResponse
+type Result struct {
+	// Whether the message is spam or not
+	IsSpam bool
+	// If populated will return an error string
+	Error string
+	// Total spam score based on triggered rules
+	Score float64
+	// Spam rules triggered
+	Rules []Rule
+}
+
+// Rule struct
+type Rule struct {
+	// Spam rule score
+	Score float64
+	// SpamAssassin rule name
+	Name string
+	// SpamAssassin rule description
+	Description string
+}
+
+// SetService defines which service should be used.
+func SetService(s string) {
+	switch s {
+	case "postmark":
+		service = "postmark"
+	default:
+		service = s
+	}
+}
+
+// SetTimeout defines the timeout
+func SetTimeout(t int) {
+	if t > 0 {
+		timeout = t
+	}
+}
+
+// Ping returns whether a service is active or not
+func Ping() error {
+	if service == "postmark" {
+		return nil
+	}
+
+	var client *spamc.Client
+	if strings.HasPrefix("unix:", service) {
+		client = spamc.NewUnix(strings.TrimLeft(service, "unix:"))
+	} else {
+		client = spamc.NewTCP(service, timeout)
+	}
+
+	return client.Ping()
+}
+
+// Check will return a Result
+func Check(msg []byte) (Result, error) {
+	r := Result{Score: 0}
+
+	if service == "" {
+		return r, errors.New("no SpamAssassin service defined")
+	}
+
+	if service == "postmark" {
+		res, err := postmark.Check(msg, timeout)
+		if err != nil {
+			r.Error = err.Error()
+			return r, nil
+		}
+		resFloat, err := strconv.ParseFloat(res.Score, 32)
+		if err == nil {
+			r.Score = round1dm(resFloat)
+			r.IsSpam = resFloat >= spamScore
+		}
+		r.Error = res.Message
+		for _, pr := range res.Rules {
+			rule := Rule{}
+			value, err := strconv.ParseFloat(pr.Score, 32)
+			if err == nil {
+				rule.Score = round1dm(value)
+			}
+			rule.Name = pr.Name
+			rule.Description = pr.Description
+			r.Rules = append(r.Rules, rule)
+		}
+	} else {
+		var client *spamc.Client
+		if strings.HasPrefix("unix:", service) {
+			client = spamc.NewUnix(strings.TrimLeft(service, "unix:"))
+		} else {
+			client = spamc.NewTCP(service, timeout)
+		}
+
+		res, err := client.Report(msg)
+		if err != nil {
+			r.Error = err.Error()
+			return r, nil
+		}
+		r.IsSpam = res.Score >= spamScore
+		r.Score = round1dm(res.Score)
+		r.Rules = []Rule{}
+		for _, sr := range res.Rules {
+			rule := Rule{}
+			value, err := strconv.ParseFloat(sr.Points, 32)
+			if err == nil {
+				rule.Score = round1dm(value)
+			}
+			rule.Name = sr.Name
+			rule.Description = sr.Description
+			r.Rules = append(r.Rules, rule)
+		}
+	}
+
+	return r, nil
+}
+
+// Round to one decimal place
+func round1dm(n float64) float64 {
+	return math.Floor(n*10) / 10
+}

internal/spamassassin/spamc/spamc.go

@@ -0,0 +1,245 @@
+// Package spamc provides a client for the SpamAssassin spamd protocol.
+// http://svn.apache.org/repos/asf/spamassassin/trunk/spamd/PROTOCOL
+//
+// Modified to add timeouts from https://github.com/cgt/spamc
+package spamc
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"net"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// ProtoVersion is the protocol version
+const ProtoVersion = "1.5"
+
+var (
+	spamInfoRe    = regexp.MustCompile(`(.+)\/(.+) (\d+) (.+)`)
+	spamMainRe    = regexp.MustCompile(`^Spam: (.+) ; (.+) . (.+)$`)
+	spamDetailsRe = regexp.MustCompile(`^\s?(-?[0-9\.]+)\s([a-zA-Z0-9_]*)(\W*)(.*)`)
+)
+
+// connection is like net.Conn except that it also has a CloseWrite method.
+// CloseWrite is implemented by net.TCPConn and net.UnixConn, but for some
+// reason it is not present in the net.Conn interface.
+type connection interface {
+	net.Conn
+	CloseWrite() error
+}
+
+// Client is a spamd client.
+type Client struct {
+	net     string
+	addr    string
+	timeout int
+}
+
+// NewTCP returns a *Client that connects to spamd via the given TCP address.
+func NewTCP(addr string, timeout int) *Client {
+	return &Client{"tcp", addr, timeout}
+}
+
+// NewUnix returns a *Client that connects to spamd via the given Unix socket.
+func NewUnix(addr string) *Client {
+	return &Client{"unix", addr, 0}
+}
+
+// Rule represents a matched SpamAssassin rule.
+type Rule struct {
+	Points      string
+	Name        string
+	Description string
+}
+
+// Result struct
+type Result struct {
+	ResponseCode int
+	Message      string
+	Spam         bool
+	Score        float64
+	Threshold    float64
+	Rules        []Rule
+}
+
+// dial connects to spamd through TCP or a Unix socket.
+func (c *Client) dial() (connection, error) {
+	if c.net == "tcp" {
+		tcpAddr, err := net.ResolveTCPAddr("tcp", c.addr)
+		if err != nil {
+			return nil, err
+		}
+		return net.DialTCP("tcp", nil, tcpAddr)
+	} else if c.net == "unix" {
+		unixAddr, err := net.ResolveUnixAddr("unix", c.addr)
+		if err != nil {
+			return nil, err
+		}
+		return net.DialUnix("unix", nil, unixAddr)
+	}
+	panic("Client.net must be either \"tcp\" or \"unix\"")
+}
+
+// Report checks if message is spam or not, and returns score plus report
+func (c *Client) Report(email []byte) (Result, error) {
+	output, err := c.report(email)
+	if err != nil {
+		return Result{}, err
+	}
+
+	return c.parseOutput(output), nil
+}
+
+func (c *Client) report(email []byte) ([]string, error) {
+	conn, err := c.dial()
+	if err != nil {
+		return nil, err
+	}
+
+	defer conn.Close()
+
+	if err := conn.SetDeadline(time.Now().Add(time.Duration(c.timeout) * time.Second)); err != nil {
+		return nil, err
+	}
+
+	bw := bufio.NewWriter(conn)
+	_, err = bw.WriteString("REPORT SPAMC/" + ProtoVersion + "\r\n")
+	if err != nil {
+		return nil, err
+	}
+	_, err = bw.WriteString("Content-length: " + strconv.Itoa(len(email)) + "\r\n\r\n")
+	if err != nil {
+		return nil, err
+	}
+	_, err = bw.Write(email)
+	if err != nil {
+		return nil, err
+	}
+	err = bw.Flush()
+	if err != nil {
+		return nil, err
+	}
+	// Client is supposed to close its writing side of the connection
+	// after sending its request.
+	err = conn.CloseWrite()
+	if err != nil {
+		return nil, err
+	}
+
+	var (
+		lines []string
+		br    = bufio.NewReader(conn)
+	)
+	for {
+		line, err := br.ReadString('\n')
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+		line = strings.TrimRight(line, " \t\r\n")
+		lines = append(lines, line)
+	}
+
+	// join lines, and replace multi-line descriptions with single line for each
+	tmp := strings.Join(lines, "\n")
+	re := regexp.MustCompile("\n                            ")
+	n := re.ReplaceAllString(tmp, " ")
+
+	//split lines again
+	return strings.Split(n, "\n"), nil
+}
+
+func (c *Client) parseOutput(output []string) Result {
+	var result Result
+	var reachedRules bool
+	for _, row := range output {
+		// header
+		if spamInfoRe.MatchString(row) {
+			res := spamInfoRe.FindStringSubmatch(row)
+			if len(res) == 5 {
+				resCode, err := strconv.Atoi(res[3])
+				if err == nil {
+					result.ResponseCode = resCode
+				}
+				result.Message = res[4]
+				continue
+			}
+		}
+		// summary
+		if spamMainRe.MatchString(row) {
+			res := spamMainRe.FindStringSubmatch(row)
+			if len(res) == 4 {
+				if strings.ToLower(res[1]) == "true" || strings.ToLower(res[1]) == "yes" {
+					result.Spam = true
+				} else {
+					result.Spam = false
+				}
+				resFloat, err := strconv.ParseFloat(res[2], 32)
+				if err == nil {
+					result.Score = resFloat
+					continue
+				}
+				resFloat, err = strconv.ParseFloat(res[3], 32)
+				if err == nil {
+					result.Threshold = resFloat
+					continue
+				}
+			}
+		}
+
+		if strings.HasPrefix(row, "Content analysis details") {
+			reachedRules = true
+			continue
+		}
+		// details
+		// row = strings.Trim(row, " \t\r\n")
+		if reachedRules && spamDetailsRe.MatchString(row) {
+			res := spamDetailsRe.FindStringSubmatch(row)
+			if len(res) == 5 {
+				rule := Rule{Points: res[1], Name: res[2], Description: res[4]}
+				result.Rules = append(result.Rules, rule)
+			}
+		}
+	}
+	return result
+}
+
+// Ping the spamd
+func (c *Client) Ping() error {
+	conn, err := c.dial()
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	if err := conn.SetDeadline(time.Now().Add(time.Duration(c.timeout) * time.Second)); err != nil {
+		return err
+	}
+
+	_, err = io.WriteString(conn, fmt.Sprintf("PING SPAMC/%s\r\n\r\n", ProtoVersion))
+	if err != nil {
+		return err
+	}
+	err = conn.CloseWrite()
+	if err != nil {
+		return err
+	}
+
+	br := bufio.NewReader(conn)
+	for {
+		_, err = br.ReadSlice('\n')
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

internal/stats/stats.go

@@ -0,0 +1,131 @@
+// Package stats stores and returns Mailpit statistics
+package stats
+
+import (
+	"runtime"
+	"sync"
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/storage"
+	"github.com/axllent/mailpit/internal/updater"
+)
+
+var (
+	// to prevent hammering Github for latest version
+	latestVersionCache string
+
+	// StartedAt is set to the current ime when Mailpit starts
+	startedAt time.Time
+
+	mu sync.RWMutex
+
+	smtpAccepted     float64
+	smtpAcceptedSize float64
+	smtpRejected     float64
+	smtpIgnored      float64
+)
+
+// AppInformation struct
+// swagger:model AppInformation
+type AppInformation struct {
+	// Current Mailpit version
+	Version string
+	// Latest Mailpit version
+	LatestVersion string
+	// Database path
+	Database string
+	// Database size in bytes
+	DatabaseSize float64
+	// Total number of messages in the database
+	Messages float64
+	// Total number of messages in the database
+	Unread float64
+	// Tags and message totals per tag
+	Tags map[string]int64
+	// Runtime statistics
+	RuntimeStats struct {
+		// Mailpit server uptime in seconds
+		Uptime float64
+		// Current memory usage in bytes
+		Memory uint64
+		// Database runtime messages deleted
+		MessagesDeleted float64
+		// Accepted runtime SMTP messages
+		SMTPAccepted float64
+		// Total runtime accepted messages size in bytes
+		SMTPAcceptedSize float64
+		// Rejected runtime SMTP messages
+		SMTPRejected float64
+		// Ignored runtime SMTP messages (when using --ignore-duplicate-ids)
+		SMTPIgnored float64
+	}
+}
+
+// Load the current statistics
+func Load() AppInformation {
+	info := AppInformation{}
+	info.Version = config.Version
+
+	var m runtime.MemStats
+	runtime.ReadMemStats(&m)
+
+	info.RuntimeStats.Memory = m.Sys - m.HeapReleased
+	info.RuntimeStats.Uptime = time.Since(startedAt).Seconds()
+	info.RuntimeStats.MessagesDeleted = storage.StatsDeleted
+	info.RuntimeStats.SMTPAccepted = smtpAccepted
+	info.RuntimeStats.SMTPAcceptedSize = smtpAcceptedSize
+	info.RuntimeStats.SMTPRejected = smtpRejected
+	info.RuntimeStats.SMTPIgnored = smtpIgnored
+
+	if latestVersionCache != "" {
+		info.LatestVersion = latestVersionCache
+	} else {
+		latest, _, _, err := updater.GithubLatest(config.Repo, config.RepoBinaryName)
+		if err == nil {
+			info.LatestVersion = latest
+			latestVersionCache = latest
+
+			// clear latest version cache after 5 minutes
+			go func() {
+				time.Sleep(5 * time.Minute)
+				latestVersionCache = ""
+			}()
+		}
+	}
+
+	info.Database = config.Database
+	info.DatabaseSize = storage.DbSize()
+	info.Messages = storage.CountTotal()
+	info.Unread = storage.CountUnread()
+	info.Tags = storage.GetAllTagsCount()
+
+	return info
+}
+
+// Track will start the statistics logging in memory
+func Track() {
+	startedAt = time.Now()
+}
+
+// LogSMTPAccepted logs a successful SMTP transaction
+func LogSMTPAccepted(size int) {
+	mu.Lock()
+	smtpAccepted = smtpAccepted + 1
+	smtpAcceptedSize = smtpAcceptedSize + float64(size)
+	mu.Unlock()
+}
+
+// LogSMTPRejected logs a rejected SMTP transaction
+func LogSMTPRejected() {
+	mu.Lock()
+	smtpRejected = smtpRejected + 1
+	mu.Unlock()
+}
+
+// LogSMTPIgnored logs an ignored SMTP transaction
+func LogSMTPIgnored() {
+	mu.Lock()
+	smtpIgnored = smtpIgnored + 1
+	mu.Unlock()
+}

internal/storage/cron.go

@@ -0,0 +1,171 @@
+package storage
+
+import (
+	"context"
+	"database/sql"
+	"math"
+	"strings"
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/server/websockets"
+	"github.com/leporo/sqlf"
+)
+
+// Database cron runs every minute
+func dbCron() {
+	for {
+		time.Sleep(60 * time.Second)
+
+		currentTime := time.Now()
+		sinceLastDbAction := currentTime.Sub(dbLastAction)
+
+		// only run the database has been idle for 5 minutes
+		if math.Floor(sinceLastDbAction.Minutes()) == 5 {
+			deletedSize := getDeletedSize()
+
+			if deletedSize > 0 {
+				total := totalMessagesSize()
+				var deletedPercent float64
+				if total == 0 {
+					deletedPercent = 100
+				} else {
+					deletedPercent = deletedSize * 100 / total
+				}
+				// only vacuum the DB if at least 1% of mail storage size has been deleted
+				if deletedPercent >= 1 {
+					logger.Log().Debugf("[db] deleted messages is %f%% of total size, reclaim space", deletedPercent)
+					vacuumDb()
+				}
+			}
+		}
+
+		pruneMessages()
+	}
+}
+
+// PruneMessages will auto-delete the oldest messages if messages > config.MaxMessages.
+// Set config.MaxMessages to 0 to disable.
+func pruneMessages() {
+	if config.MaxMessages < 1 {
+		return
+	}
+
+	start := time.Now()
+
+	q := sqlf.Select("ID, Size").
+		From(tenant("mailbox")).
+		OrderBy("Created DESC").
+		Limit(5000).
+		Offset(config.MaxMessages)
+
+	ids := []string{}
+	var prunedSize int64
+	var size float64
+	if err := q.QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+		var id string
+
+		if err := row.Scan(&id, &size); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+			return
+		}
+		ids = append(ids, id)
+		prunedSize = prunedSize + int64(size)
+
+	}); err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return
+	}
+
+	if len(ids) == 0 {
+		return
+	}
+
+	tx, err := db.BeginTx(context.Background(), nil)
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return
+	}
+
+	args := make([]interface{}, len(ids))
+	for i, id := range ids {
+		args[i] = id
+	}
+
+	_, err = tx.Exec(`DELETE FROM `+tenant("mailbox_data")+` WHERE ID IN (?`+strings.Repeat(",?", len(ids)-1)+`)`, args...) // #nosec
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return
+	}
+
+	_, err = tx.Exec(`DELETE FROM `+tenant("message_tags")+` WHERE ID IN (?`+strings.Repeat(",?", len(ids)-1)+`)`, args...) // #nosec
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return
+	}
+
+	_, err = tx.Exec(`DELETE FROM `+tenant("mailbox")+` WHERE ID IN (?`+strings.Repeat(",?", len(ids)-1)+`)`, args...) // #nosec
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return
+	}
+
+	err = tx.Commit()
+
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		if err := tx.Rollback(); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+		}
+	}
+
+	if err := pruneUnusedTags(); err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+	}
+
+	addDeletedSize(prunedSize)
+	dbLastAction = time.Now()
+
+	elapsed := time.Since(start)
+	logger.Log().Debugf("[db] auto-pruned %d messages in %s", len(ids), elapsed)
+
+	logMessagesDeleted(len(ids))
+
+	websockets.Broadcast("prune", nil)
+}
+
+// Vacuum the database to reclaim space from deleted messages
+func vacuumDb() {
+	if sqlDriver == "rqlite" {
+		// let rqlite handle vacuuming
+		return
+	}
+
+	start := time.Now()
+
+	// set WAL file checkpoint
+	if _, err := db.Exec("PRAGMA wal_checkpoint"); err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return
+	}
+
+	// vacuum database
+	if _, err := db.Exec("VACUUM"); err != nil {
+		logger.Log().Errorf("[db] VACUUM: %s", err.Error())
+		return
+	}
+
+	// truncate WAL file
+	if _, err := db.Exec("PRAGMA wal_checkpoint(TRUNCATE)"); err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return
+	}
+
+	if err := SettingPut("DeletedSize", "0"); err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+	}
+
+	elapsed := time.Since(start)
+	logger.Log().Debugf("[db] vacuum completed in %s", elapsed)
+}

internal/storage/database.go

@@ -0,0 +1,259 @@
+// Package storage handles all database actions
+package storage
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"os"
+	"os/signal"
+	"path"
+	"path/filepath"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/klauspost/compress/zstd"
+	"github.com/leporo/sqlf"
+
+	// sqlite - https://gitlab.com/cznic/sqlite
+	_ "modernc.org/sqlite"
+
+	// rqlite - https://github.com/rqlite/gorqlite | https://rqlite.io/
+	_ "github.com/rqlite/gorqlite/stdlib"
+)
+
+var (
+	db           *sql.DB
+	dbFile       string
+	dbIsTemp     bool
+	sqlDriver    string
+	dbLastAction time.Time
+
+	// zstd compression encoder & decoder
+	dbEncoder, _ = zstd.NewWriter(nil)
+	dbDecoder, _ = zstd.NewReader(nil)
+)
+
+// InitDB will initialise the database
+func InitDB() error {
+	p := config.Database
+	var dsn string
+
+	if p == "" {
+		// when no path is provided then we create a temporary file
+		// which will get deleted on Close(), SIGINT or SIGTERM
+		p = fmt.Sprintf("%s-%d.db", path.Join(os.TempDir(), "mailpit"), time.Now().UnixNano())
+		dbIsTemp = true
+		sqlDriver = "sqlite"
+		dsn = p
+		logger.Log().Debugf("[db] using temporary database: %s", p)
+	} else if strings.HasPrefix(p, "http://") || strings.HasPrefix(p, "https://") {
+		sqlDriver = "rqlite"
+		dsn = p
+		logger.Log().Debugf("[db] opening rqlite database %s", p)
+	} else {
+		p = filepath.Clean(p)
+		sqlDriver = "sqlite"
+		dsn = fmt.Sprintf("file:%s?cache=shared", p)
+		logger.Log().Debugf("[db] opening database %s", p)
+	}
+
+	config.Database = p
+
+	if sqlDriver == "sqlite" {
+		if !isFile(p) {
+			// try create a file to ensure permissions
+			f, err := os.Create(p)
+			if err != nil {
+				return fmt.Errorf("[db] %s", err.Error())
+			}
+			_ = f.Close()
+		}
+	}
+
+	var err error
+
+	db, err = sql.Open(sqlDriver, dsn)
+	if err != nil {
+		return err
+	}
+
+	for i := 1; i < 6; i++ {
+		if err := Ping(); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+			logger.Log().Infof("[db] reconnecting in 5 seconds (attempt %d/5)", i)
+			time.Sleep(5 * time.Second)
+		} else {
+			continue
+		}
+	}
+
+	// prevent "database locked" errors
+	// @see https://github.com/mattn/go-sqlite3#faq
+	db.SetMaxOpenConns(1)
+
+	if sqlDriver == "sqlite" {
+		// SQLite performance tuning (https://phiresky.github.io/blog/2020/sqlite-performance-tuning/)
+		_, err = db.Exec("PRAGMA journal_mode = WAL; PRAGMA synchronous = normal;")
+		if err != nil {
+			return err
+		}
+	}
+
+	// create tables if necessary & apply migrations
+	if err := dbApplySchemas(); err != nil {
+		return err
+	}
+
+	LoadTagFilters()
+
+	dbFile = p
+	dbLastAction = time.Now()
+
+	sigs := make(chan os.Signal, 1)
+	// catch all signals since not explicitly listing
+	// Program that will listen to the SIGINT and SIGTERM
+	// SIGINT will listen to CTRL-C.
+	// SIGTERM will be caught if kill command executed
+	signal.Notify(sigs, os.Interrupt, syscall.SIGTERM)
+	// method invoked upon seeing signal
+	go func() {
+		s := <-sigs
+		fmt.Printf("[db] got %s signal, shutting down\n", s)
+		Close()
+		os.Exit(0)
+	}()
+
+	// auto-prune & delete
+	go dbCron()
+
+	go dataMigrations()
+
+	return nil
+}
+
+// Tenant applies an optional prefix to the table name
+func tenant(table string) string {
+	return fmt.Sprintf("%s%s", config.TenantID, table)
+}
+
+// Close will close the database, and delete if temporary
+func Close() {
+	// on a fatal exit (eg: ports blocked), allow Mailpit to run migration tasks before closing the DB
+	time.Sleep(200 * time.Millisecond)
+
+	if db != nil {
+		if err := db.Close(); err != nil {
+			logger.Log().Warn("[db] error closing database, ignoring")
+		}
+	}
+
+	// allow SQLite to finish closing DB & write WAL logs if local
+	time.Sleep(100 * time.Millisecond)
+
+	if dbIsTemp && isFile(dbFile) {
+		logger.Log().Debugf("[db] deleting temporary file %s", dbFile)
+		if err := os.Remove(dbFile); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+		}
+	}
+}
+
+// Ping the database connection and return an error if unsuccessful
+func Ping() error {
+	return db.Ping()
+}
+
+// StatsGet returns the total/unread statistics for a mailbox
+func StatsGet() MailboxStats {
+	var (
+		total  = CountTotal()
+		unread = CountUnread()
+		tags   = GetAllTags()
+	)
+
+	dbLastAction = time.Now()
+
+	return MailboxStats{
+		Total:  total,
+		Unread: unread,
+		Tags:   tags,
+	}
+}
+
+// CountTotal returns the number of emails in the database
+func CountTotal() float64 {
+	var total float64
+
+	_ = sqlf.From(tenant("mailbox")).
+		Select("COUNT(*)").To(&total).
+		QueryRowAndClose(context.TODO(), db)
+
+	return total
+}
+
+// CountUnread returns the number of emails in the database that are unread.
+func CountUnread() float64 {
+	var total float64
+
+	_ = sqlf.From(tenant("mailbox")).
+		Select("COUNT(*)").To(&total).
+		Where("Read = ?", 0).
+		QueryRowAndClose(context.TODO(), db)
+
+	return total
+}
+
+// CountRead returns the number of emails in the database that are read.
+func CountRead() float64 {
+	var total float64
+
+	_ = sqlf.From(tenant("mailbox")).
+		Select("COUNT(*)").To(&total).
+		Where("Read = ?", 1).
+		QueryRowAndClose(context.TODO(), db)
+
+	return total
+}
+
+// DbSize returns the size of the SQLite database.
+func DbSize() float64 {
+	var total sql.NullFloat64
+
+	err := db.QueryRow("SELECT page_count * page_size AS size FROM pragma_page_count(), pragma_page_size()").Scan(&total)
+
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return total.Float64
+	}
+
+	return total.Float64
+}
+
+// IsUnread returns whether a message is unread or not.
+func IsUnread(id string) bool {
+	var unread int
+
+	_ = sqlf.From(tenant("mailbox")).
+		Select("COUNT(*)").To(&unread).
+		Where("Read = ?", 0).
+		Where("ID = ?", id).
+		QueryRowAndClose(context.TODO(), db)
+
+	return unread == 1
+}
+
+// MessageIDExists checks whether a Message-ID exists in the DB
+func MessageIDExists(id string) bool {
+	var total int
+
+	_ = sqlf.From(tenant("mailbox")).
+		Select("COUNT(*)").To(&total).
+		Where("MessageID = ?", id).
+		QueryRowAndClose(context.TODO(), db)
+
+	return total != 0
+}

internal/storage/messages.go

@@ -0,0 +1,670 @@
+package storage
+
+import (
+	"bytes"
+	"context"
+	"database/sql"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/mail"
+	"strings"
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/tools"
+	"github.com/axllent/mailpit/server/webhook"
+	"github.com/axllent/mailpit/server/websockets"
+	"github.com/jhillyerd/enmime"
+	"github.com/leporo/sqlf"
+	"github.com/lithammer/shortuuid/v4"
+)
+
+// Store will save an email to the database tables.
+// Returns the database ID of the saved message.
+func Store(body *[]byte) (string, error) {
+	// Parse message body with enmime
+	env, err := enmime.ReadEnvelope(bytes.NewReader(*body))
+	if err != nil {
+		logger.Log().Warnf("[message] %s", err.Error())
+		return "", nil
+	}
+
+	from := &mail.Address{}
+	fromJSON := addressToSlice(env, "From")
+	if len(fromJSON) > 0 {
+		from = fromJSON[0]
+	} else if env.GetHeader("From") != "" {
+		from = &mail.Address{Name: env.GetHeader("From")}
+	}
+
+	obj := DBMailSummary{
+		From:    from,
+		To:      addressToSlice(env, "To"),
+		Cc:      addressToSlice(env, "Cc"),
+		Bcc:     addressToSlice(env, "Bcc"),
+		ReplyTo: addressToSlice(env, "Reply-To"),
+	}
+
+	messageID := strings.Trim(env.Root.Header.Get("Message-ID"), "<>")
+	created := time.Now()
+
+	// use message date instead of created date
+	if config.UseMessageDates {
+		if mDate, err := env.Date(); err == nil {
+			created = mDate
+		}
+	}
+
+	// generate the search text
+	searchText := createSearchText(env)
+
+	// generate unique ID
+	id := shortuuid.New()
+
+	summaryJSON, err := json.Marshal(obj)
+	if err != nil {
+		return "", err
+	}
+
+	// begin a transaction to ensure both the message
+	// and data are stored successfully
+	ctx := context.Background()
+	tx, err := db.BeginTx(ctx, nil)
+	if err != nil {
+		return "", err
+	}
+
+	// roll back if it fails
+	defer tx.Rollback()
+
+	subject := env.GetHeader("Subject")
+	size := float64(len(*body))
+	inline := len(env.Inlines)
+	attachments := len(env.Attachments)
+	snippet := tools.CreateSnippet(env.Text, env.HTML)
+
+	sql := fmt.Sprintf(`INSERT INTO %s 
+		(Created, ID, MessageID, Subject, Metadata, Size, Inline, Attachments, SearchText, Read, Snippet) 
+		VALUES(?,?,?,?,?,?,?,?,?,0,?)`,
+		tenant("mailbox"),
+	) // #nosec
+
+	// insert mail summary data
+	_, err = tx.Exec(sql, created.UnixMilli(), id, messageID, subject, string(summaryJSON), size, inline, attachments, searchText, snippet)
+	if err != nil {
+		return "", err
+	}
+
+	// insert compressed raw message
+	encoded := dbEncoder.EncodeAll(*body, make([]byte, 0, int(size)))
+	hexStr := hex.EncodeToString(encoded)
+	_, err = tx.Exec(fmt.Sprintf(`INSERT INTO %s (ID, Email) VALUES(?, x'%s')`, tenant("mailbox_data"), hexStr), id) // #nosec
+	if err != nil {
+		return "", err
+	}
+
+	if err := tx.Commit(); err != nil {
+		return "", err
+	}
+
+	// extract tags from body matches
+	rawTags := findTagsInRawMessage(body)
+	// extract plus addresses tags from enmime.Envelope
+	plusTags := obj.tagsFromPlusAddresses()
+	// extract tags from X-Tags header
+	xTags := tools.SetTagCasing(strings.Split(strings.TrimSpace(env.Root.Header.Get("X-Tags")), ","))
+	// extract tags from search matches
+	searchTags := tagFilterMatches(id)
+
+	// combine all tags into one slice
+	tags := append(rawTags, plusTags...)
+	tags = append(tags, xTags...)
+	// sort and extract only unique tags
+	tags = sortedUniqueTags(append(tags, searchTags...))
+
+	if len(tags) > 0 {
+		if err := SetMessageTags(id, tags); err != nil {
+			return "", err
+		}
+	}
+
+	c := &MessageSummary{}
+	if err := json.Unmarshal(summaryJSON, c); err != nil {
+		return "", err
+	}
+
+	c.Created = created
+	c.ID = id
+	c.MessageID = messageID
+	c.Attachments = attachments
+	c.Subject = subject
+	c.Size = size
+	c.Tags = tags
+	c.Snippet = snippet
+
+	websockets.Broadcast("new", c)
+	webhook.Send(c)
+
+	dbLastAction = time.Now()
+
+	BroadcastMailboxStats()
+
+	return id, nil
+}
+
+// List returns a subset of messages from the mailbox,
+// sorted latest to oldest
+func List(start, limit int) ([]MessageSummary, error) {
+	results := []MessageSummary{}
+	tsStart := time.Now()
+
+	q := sqlf.From(tenant("mailbox") + " m").
+		Select(`m.Created, m.ID, m.MessageID, m.Subject, m.Metadata, m.Size, m.Attachments, m.Read, m.Snippet`).
+		OrderBy("m.Created DESC").
+		Limit(limit).
+		Offset(start)
+
+	if err := q.QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+		var created float64
+		var id string
+		var messageID string
+		var subject string
+		var metadata string
+		var size float64
+		var attachments int
+		var read int
+		var snippet string
+		em := MessageSummary{}
+
+		if err := row.Scan(&created, &id, &messageID, &subject, &metadata, &size, &attachments, &read, &snippet); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+			return
+		}
+
+		if err := json.Unmarshal([]byte(metadata), &em); err != nil {
+			logger.Log().Errorf("[json] %s", err.Error())
+			return
+		}
+
+		em.Created = time.UnixMilli(int64(created))
+		em.ID = id
+		em.MessageID = messageID
+		em.Subject = subject
+		em.Size = size
+		em.Attachments = attachments
+		em.Read = read == 1
+		em.Snippet = snippet
+		// artificially generate ReplyTo if legacy data is missing Reply-To field
+		if em.ReplyTo == nil {
+			em.ReplyTo = []*mail.Address{}
+		}
+
+		results = append(results, em)
+	}); err != nil {
+		return results, err
+	}
+
+	// set tags for listed messages only
+	for i, m := range results {
+		results[i].Tags = getMessageTags(m.ID)
+	}
+
+	dbLastAction = time.Now()
+
+	elapsed := time.Since(tsStart)
+
+	logger.Log().Debugf("[db] list INBOX in %s", elapsed)
+
+	return results, nil
+}
+
+// GetMessage returns a Message generated from the mailbox_data collection.
+// If the message lacks a date header, then the received datetime is used.
+func GetMessage(id string) (*Message, error) {
+	raw, err := GetMessageRaw(id)
+	if err != nil {
+		return nil, err
+	}
+
+	r := bytes.NewReader(raw)
+
+	env, err := enmime.ReadEnvelope(r)
+	if err != nil {
+		return nil, err
+	}
+
+	var from *mail.Address
+	fromData := addressToSlice(env, "From")
+	if len(fromData) > 0 {
+		from = fromData[0]
+	} else if env.GetHeader("From") != "" {
+		from = &mail.Address{Name: env.GetHeader("From")}
+	}
+
+	messageID := strings.Trim(env.GetHeader("Message-ID"), "<>")
+
+	returnPath := strings.Trim(env.GetHeader("Return-Path"), "<>")
+	if returnPath == "" && from != nil {
+		returnPath = from.Address
+	}
+
+	date, err := env.Date()
+	if err != nil {
+		// return received datetime when message does not contain a date header
+		q := sqlf.From(tenant("mailbox")).
+			Select(`Created`).
+			Where(`ID = ?`, id)
+
+		if err := q.QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+			var created float64
+
+			if err := row.Scan(&created); err != nil {
+				logger.Log().Errorf("[db] %s", err.Error())
+				return
+			}
+
+			logger.Log().Debugf("[db] %s does not contain a date header, using received datetime", id)
+
+			date = time.UnixMilli(int64(created))
+		}); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+		}
+	}
+
+	obj := Message{
+		ID:         id,
+		MessageID:  messageID,
+		From:       from,
+		Date:       date,
+		To:         addressToSlice(env, "To"),
+		Cc:         addressToSlice(env, "Cc"),
+		Bcc:        addressToSlice(env, "Bcc"),
+		ReplyTo:    addressToSlice(env, "Reply-To"),
+		ReturnPath: returnPath,
+		Subject:    env.GetHeader("Subject"),
+		Tags:       getMessageTags(id),
+		Size:       float64(len(raw)),
+		Text:       env.Text,
+	}
+
+	obj.HTML = env.HTML
+	obj.Inline = []Attachment{}
+	obj.Attachments = []Attachment{}
+
+	for _, i := range env.Inlines {
+		if i.FileName != "" || i.ContentID != "" {
+			obj.Inline = append(obj.Inline, AttachmentSummary(i))
+		}
+	}
+
+	for _, i := range env.OtherParts {
+		if i.FileName != "" || i.ContentID != "" {
+			obj.Inline = append(obj.Inline, AttachmentSummary(i))
+		}
+	}
+
+	for _, a := range env.Attachments {
+		if a.FileName != "" || a.ContentID != "" {
+			obj.Attachments = append(obj.Attachments, AttachmentSummary(a))
+		}
+	}
+
+	// get List-Unsubscribe links if set
+	obj.ListUnsubscribe = ListUnsubscribe{}
+	obj.ListUnsubscribe.Links = []string{}
+	if env.GetHeader("List-Unsubscribe") != "" {
+		l := env.GetHeader("List-Unsubscribe")
+		links, err := tools.ListUnsubscribeParser(l)
+		obj.ListUnsubscribe.Header = l
+		obj.ListUnsubscribe.Links = links
+		if err != nil {
+			obj.ListUnsubscribe.Errors = err.Error()
+		}
+		obj.ListUnsubscribe.HeaderPost = env.GetHeader("List-Unsubscribe-Post")
+	}
+
+	// mark message as read
+	if err := MarkRead(id); err != nil {
+		return &obj, err
+	}
+
+	dbLastAction = time.Now()
+
+	return &obj, nil
+}
+
+// GetMessageRaw returns an []byte of the full message
+func GetMessageRaw(id string) ([]byte, error) {
+	var i string
+	var msg string
+	q := sqlf.From(tenant("mailbox_data")).
+		Select(`ID`).To(&i).
+		Select(`Email`).To(&msg).
+		Where(`ID = ?`, id)
+	err := q.QueryRowAndClose(context.Background(), db)
+	if err != nil {
+		return nil, err
+	}
+
+	if i == "" {
+		return nil, errors.New("message not found")
+	}
+
+	var data []byte
+	if sqlDriver == "rqlite" {
+		data, err = base64.StdEncoding.DecodeString(msg)
+		if err != nil {
+			return nil, fmt.Errorf("error decoding base64 message: %w", err)
+		}
+	} else {
+		data = []byte(msg)
+	}
+
+	raw, err := dbDecoder.DecodeAll(data, nil)
+	if err != nil {
+		return nil, fmt.Errorf("error decompressing message: %s", err.Error())
+	}
+
+	dbLastAction = time.Now()
+
+	return raw, err
+}
+
+// GetAttachmentPart returns an *enmime.Part (attachment or inline) from a message
+func GetAttachmentPart(id, partID string) (*enmime.Part, error) {
+	raw, err := GetMessageRaw(id)
+	if err != nil {
+		return nil, err
+	}
+
+	r := bytes.NewReader(raw)
+
+	env, err := enmime.ReadEnvelope(r)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, a := range env.Inlines {
+		if a.PartID == partID {
+			return a, nil
+		}
+	}
+
+	for _, a := range env.OtherParts {
+		if a.PartID == partID {
+			return a, nil
+		}
+	}
+
+	for _, a := range env.Attachments {
+		if a.PartID == partID {
+			return a, nil
+		}
+	}
+
+	dbLastAction = time.Now()
+
+	return nil, errors.New("attachment not found")
+}
+
+// LatestID returns the latest message ID
+//
+// If a query argument is set in the request the function will return the
+// latest message matching the search
+func LatestID(r *http.Request) (string, error) {
+	var messages []MessageSummary
+	var err error
+
+	search := strings.TrimSpace(r.URL.Query().Get("query"))
+	if search != "" {
+		messages, _, err = Search(search, r.URL.Query().Get("tz"), 0, 1)
+		if err != nil {
+			return "", err
+		}
+	} else {
+		messages, err = List(0, 1)
+		if err != nil {
+			return "", err
+		}
+	}
+	if len(messages) == 0 {
+		return "", errors.New("Message not found")
+	}
+
+	return messages[0].ID, nil
+}
+
+// MarkRead will mark a message as read
+func MarkRead(id string) error {
+	if !IsUnread(id) {
+		return nil
+	}
+
+	_, err := sqlf.Update(tenant("mailbox")).
+		Set("Read", 1).
+		Where("ID = ?", id).
+		ExecAndClose(context.Background(), db)
+
+	if err == nil {
+		logger.Log().Debugf("[db] marked message %s as read", id)
+	}
+
+	BroadcastMailboxStats()
+
+	return err
+}
+
+// MarkAllRead will mark all messages as read
+func MarkAllRead() error {
+	var (
+		start = time.Now()
+		total = CountUnread()
+	)
+
+	_, err := sqlf.Update(tenant("mailbox")).
+		Set("Read", 1).
+		Where("Read = ?", 0).
+		ExecAndClose(context.Background(), db)
+	if err != nil {
+		return err
+	}
+
+	elapsed := time.Since(start)
+	logger.Log().Debugf("[db] marked %v messages as read in %s", total, elapsed)
+
+	BroadcastMailboxStats()
+
+	dbLastAction = time.Now()
+
+	return nil
+}
+
+// MarkAllUnread will mark all messages as unread
+func MarkAllUnread() error {
+	var (
+		start = time.Now()
+		total = CountRead()
+	)
+
+	_, err := sqlf.Update(tenant("mailbox")).
+		Set("Read", 0).
+		Where("Read = ?", 1).
+		ExecAndClose(context.Background(), db)
+	if err != nil {
+		return err
+	}
+
+	elapsed := time.Since(start)
+	logger.Log().Debugf("[db] marked %v messages as unread in %s", total, elapsed)
+
+	BroadcastMailboxStats()
+
+	dbLastAction = time.Now()
+
+	return nil
+}
+
+// MarkUnread will mark a message as unread
+func MarkUnread(id string) error {
+	if IsUnread(id) {
+		return nil
+	}
+
+	_, err := sqlf.Update(tenant("mailbox")).
+		Set("Read", 0).
+		Where("ID = ?", id).
+		ExecAndClose(context.Background(), db)
+
+	if err == nil {
+		logger.Log().Debugf("[db] marked message %s as unread", id)
+	}
+
+	dbLastAction = time.Now()
+
+	BroadcastMailboxStats()
+
+	return err
+}
+
+// DeleteMessages deletes one or more messages in bulk
+func DeleteMessages(ids []string) error {
+	if len(ids) == 0 {
+		return nil
+	}
+
+	start := time.Now()
+
+	args := make([]interface{}, len(ids))
+	for i, id := range ids {
+		args[i] = id
+	}
+
+	sql := fmt.Sprintf(`SELECT ID, Size FROM %s WHERE  ID IN (?%s)`, tenant("mailbox"), strings.Repeat(",?", len(args)-1)) // #nosec
+	rows, err := db.Query(sql, args...)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	toDelete := []string{}
+	var totalSize float64
+
+	for rows.Next() {
+		var id string
+		var size float64
+		if err := rows.Scan(&id, &size); err != nil {
+			return err
+		}
+		toDelete = append(toDelete, id)
+		totalSize = totalSize + size
+	}
+
+	if err = rows.Err(); err != nil {
+		return err
+	}
+
+	if len(toDelete) == 0 {
+		return nil // nothing to delete
+	}
+
+	tx, err := db.BeginTx(context.Background(), nil)
+	if err != nil {
+		return err
+	}
+
+	args = make([]interface{}, len(toDelete))
+	for i, id := range toDelete {
+		args[i] = id
+	}
+
+	tables := []string{"mailbox", "mailbox_data", "message_tags"}
+
+	for _, t := range tables {
+		sql = fmt.Sprintf(`DELETE FROM %s WHERE ID IN (?%s)`, tenant(t), strings.Repeat(",?", len(ids)-1))
+
+		_, err = tx.Exec(sql, args...) // #nosec
+		if err != nil {
+			return err
+		}
+	}
+
+	err = tx.Commit()
+
+	dbLastAction = time.Now()
+	addDeletedSize(int64(totalSize))
+
+	logMessagesDeleted(len(toDelete))
+
+	_ = pruneUnusedTags()
+
+	elapsed := time.Since(start)
+
+	messages := "messages"
+	if len(toDelete) == 1 {
+		messages = "message"
+	}
+
+	logger.Log().Debugf("[db] deleted %d %s in %s", len(toDelete), messages, elapsed)
+
+	BroadcastMailboxStats()
+
+	return nil
+}
+
+// DeleteAllMessages will delete all messages from a mailbox
+func DeleteAllMessages() error {
+	var (
+		start = time.Now()
+		total int
+	)
+
+	_ = sqlf.From(tenant("mailbox")).
+		Select("COUNT(*)").To(&total).
+		QueryRowAndClose(context.TODO(), db)
+
+	// begin a transaction to ensure both the message
+	// summaries and data are deleted successfully
+	tx, err := db.BeginTx(context.Background(), nil)
+	if err != nil {
+		return err
+	}
+
+	// roll back if it fails
+	defer tx.Rollback()
+
+	tables := []string{"mailbox", "mailbox_data", "tags", "message_tags"}
+
+	for _, t := range tables {
+		sql := fmt.Sprintf(`DELETE FROM %s`, tenant(t)) // #nosec
+		_, err := tx.Exec(sql)
+		if err != nil {
+			return err
+		}
+	}
+
+	if err := tx.Commit(); err != nil {
+		return err
+	}
+
+	elapsed := time.Since(start)
+	logger.Log().Debugf("[db] deleted %d messages in %s", total, elapsed)
+
+	vacuumDb()
+
+	dbLastAction = time.Now()
+	if err := SettingPut("DeletedSize", "0"); err != nil {
+		logger.Log().Warnf("[db] %s", err.Error())
+	}
+
+	logMessagesDeleted(total)
+
+	websockets.Broadcast("prune", nil)
+	BroadcastMailboxStats()
+
+	return err
+}

internal/storage/messages_test.go

@@ -0,0 +1,169 @@
+package storage
+
+import (
+	"testing"
+	"time"
+)
+
+func TestTextEmailInserts(t *testing.T) {
+	setup()
+	defer Close()
+
+	t.Log("Testing text email storage")
+
+	start := time.Now()
+
+	for i := 0; i < testRuns; i++ {
+		if _, err := Store(&testTextEmail); err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+	}
+
+	assertEqual(t, CountTotal(), float64(testRuns), "Incorrect number of text emails stored")
+
+	t.Logf("Inserted %d text emails in %s", testRuns, time.Since(start))
+
+	delStart := time.Now()
+	if err := DeleteAllMessages(); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	assertEqual(t, CountTotal(), float64(0), "incorrect number of text emails deleted")
+
+	t.Logf("deleted %d text emails in %s", testRuns, time.Since(delStart))
+
+	assertEqualStats(t, 0, 0)
+}
+
+func TestMimeEmailInserts(t *testing.T) {
+	setup()
+	defer Close()
+
+	t.Log("Testing mime email storage")
+
+	start := time.Now()
+
+	for i := 0; i < testRuns; i++ {
+		if _, err := Store(&testMimeEmail); err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+	}
+
+	assertEqual(t, CountTotal(), float64(testRuns), "Incorrect number of mime emails stored")
+
+	t.Logf("Inserted %d text emails in %s", testRuns, time.Since(start))
+
+	delStart := time.Now()
+	if err := DeleteAllMessages(); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	assertEqual(t, CountTotal(), float64(0), "incorrect number of mime emails deleted")
+
+	t.Logf("Deleted %d mime emails in %s", testRuns, time.Since(delStart))
+}
+
+func TestRetrieveMimeEmail(t *testing.T) {
+	setup()
+	defer Close()
+
+	t.Log("Testing mime email retrieval")
+
+	id, err := Store(&testMimeEmail)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	msg, err := GetMessage(id)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	assertEqual(t, msg.From.Name, "Sender Smith", "\"From\" name does not match")
+	assertEqual(t, msg.From.Address, "sender2@example.com", "\"From\" address does not match")
+	assertEqual(t, msg.Subject, "inline + attachment", "subject does not match")
+	assertEqual(t, len(msg.To), 1, "incorrect number of recipients")
+	assertEqual(t, msg.To[0].Name, "Recipient Ross", "\"To\" name does not match")
+	assertEqual(t, msg.To[0].Address, "recipient2@example.com", "\"To\" address does not match")
+	assertEqual(t, len(msg.Attachments), 1, "incorrect number of attachments")
+	assertEqual(t, msg.Attachments[0].FileName, "Sample PDF.pdf", "attachment filename does not match")
+	assertEqual(t, len(msg.Inline), 1, "incorrect number of inline attachments")
+	assertEqual(t, msg.Inline[0].FileName, "inline-image.jpg", "inline attachment filename does not match")
+
+	attachmentData, err := GetAttachmentPart(id, msg.Attachments[0].PartID)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+	assertEqual(t, float64(len(attachmentData.Content)), msg.Attachments[0].Size, "attachment size does not match")
+
+	inlineData, err := GetAttachmentPart(id, msg.Inline[0].PartID)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+	assertEqual(t, float64(len(inlineData.Content)), msg.Inline[0].Size, "inline attachment size does not match")
+}
+
+func TestMessageSummary(t *testing.T) {
+	setup()
+	defer Close()
+
+	t.Log("Testing message summary")
+
+	if _, err := Store(&testMimeEmail); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	summaries, err := List(0, 1)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	assertEqual(t, len(summaries), 1, "Expected 1 result")
+
+	msg := summaries[0]
+
+	assertEqual(t, msg.From.Name, "Sender Smith", "\"From\" name does not match")
+	assertEqual(t, msg.From.Address, "sender2@example.com", "\"From\" address does not match")
+	assertEqual(t, msg.Subject, "inline + attachment", "subject does not match")
+	assertEqual(t, len(msg.To), 1, "incorrect number of recipients")
+	assertEqual(t, msg.To[0].Name, "Recipient Ross", "\"To\" name does not match")
+	assertEqual(t, msg.To[0].Address, "recipient2@example.com", "\"To\" address does not match")
+	assertEqual(t, msg.Snippet, "Message with inline image and attachment:", "\"Snippet\" does does not match")
+	assertEqual(t, msg.Attachments, 1, "Expected 1 attachment")
+	assertEqual(t, msg.MessageID, "33af2ac1-c33d-9738-35e3-a6daf90bbd89@gmail.com", "\"MessageID\" does not match")
+}
+
+func BenchmarkImportText(b *testing.B) {
+	setup()
+	defer Close()
+
+	for i := 0; i < b.N; i++ {
+		if _, err := Store(&testTextEmail); err != nil {
+			b.Log("error ", err)
+			b.Fail()
+		}
+	}
+}
+
+func BenchmarkImportMime(b *testing.B) {
+	setup()
+	defer Close()
+
+	for i := 0; i < b.N; i++ {
+		if _, err := Store(&testMimeEmail); err != nil {
+			b.Log("error ", err)
+			b.Fail()
+		}
+	}
+
+}

internal/storage/notifications.go

@@ -0,0 +1,38 @@
+package storage
+
+import (
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/server/websockets"
+)
+
+var bcStatsDelay = false
+
+// BroadcastMailboxStats broadcasts the total number of messages
+// displayed to the web UI, as well as the total unread messages.
+// The lookup is very fast (< 10ms / 100k messages under load).
+// Rate limited to 4x per second.
+func BroadcastMailboxStats() {
+	if bcStatsDelay {
+		return
+	}
+
+	bcStatsDelay = true
+
+	go func() {
+		time.Sleep(250 * time.Millisecond)
+		bcStatsDelay = false
+		b := struct {
+			Total   float64
+			Unread  float64
+			Version string
+		}{
+			Total:   CountTotal(),
+			Unread:  CountUnread(),
+			Version: config.Version,
+		}
+
+		websockets.Broadcast("stats", b)
+	}()
+}

internal/storage/reindex.go

@@ -0,0 +1,139 @@
+package storage
+
+import (
+	"bytes"
+	"context"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"net/mail"
+	"os"
+
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/tools"
+	"github.com/jhillyerd/enmime"
+	"github.com/leporo/sqlf"
+)
+
+// ReindexAll will regenerate the search text and snippet for a message
+// and update the database.
+func ReindexAll() {
+	ids := []string{}
+	var i string
+	chunkSize := 1000
+
+	finished := 0
+
+	err := sqlf.Select("ID").To(&i).
+		From(tenant("mailbox")).
+		OrderBy("Created DESC").
+		QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+			ids = append(ids, i)
+		})
+
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		os.Exit(1)
+	}
+
+	total := len(ids)
+
+	chunks := chunkBy(ids, chunkSize)
+
+	logger.Log().Infof("reindexing %d messages", total)
+
+	type updateStruct struct {
+		ID         string
+		SearchText string
+		Snippet    string
+		Metadata   string
+	}
+
+	for _, ids := range chunks {
+		updates := []updateStruct{}
+
+		for _, id := range ids {
+			raw, err := GetMessageRaw(id)
+			if err != nil {
+				logger.Log().Error(err)
+				continue
+			}
+
+			r := bytes.NewReader(raw)
+
+			env, err := enmime.ReadEnvelope(r)
+			if err != nil {
+				logger.Log().Errorf("[message] %s", err.Error())
+				continue
+			}
+
+			from := &mail.Address{}
+			fromJSON := addressToSlice(env, "From")
+			if len(fromJSON) > 0 {
+				from = fromJSON[0]
+			} else if env.GetHeader("From") != "" {
+				from = &mail.Address{Name: env.GetHeader("From")}
+			}
+
+			obj := DBMailSummary{
+				From:    from,
+				To:      addressToSlice(env, "To"),
+				Cc:      addressToSlice(env, "Cc"),
+				Bcc:     addressToSlice(env, "Bcc"),
+				ReplyTo: addressToSlice(env, "Reply-To"),
+			}
+
+			MetadataJSON, err := json.Marshal(obj)
+			if err != nil {
+				logger.Log().Errorf("[message] %s", err.Error())
+				continue
+			}
+
+			searchText := createSearchText(env)
+			snippet := tools.CreateSnippet(env.Text, env.HTML)
+
+			u := updateStruct{}
+			u.ID = id
+			u.SearchText = searchText
+			u.Snippet = snippet
+			u.Metadata = string(MetadataJSON)
+
+			updates = append(updates, u)
+		}
+
+		ctx := context.Background()
+		tx, err := db.BeginTx(ctx, nil)
+		if err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+			continue
+		}
+
+		// roll back if it fails
+		defer tx.Rollback()
+
+		// insert mail summary data
+		for _, u := range updates {
+			_, err = tx.Exec(fmt.Sprintf(`UPDATE %s SET SearchText = ?, Snippet = ?, Metadata = ? WHERE ID = ?`, tenant("mailbox")), u.SearchText, u.Snippet, u.Metadata, u.ID)
+			if err != nil {
+				logger.Log().Errorf("[db] %s", err.Error())
+				continue
+			}
+		}
+
+		if err := tx.Commit(); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+			continue
+		}
+
+		finished += len(updates)
+
+		logger.Log().Printf("reindexed: %d / %d (%d%%)", finished, total, finished*100/total)
+	}
+}
+
+func chunkBy[T any](items []T, chunkSize int) (chunks [][]T) {
+	for chunkSize < len(items) {
+		items, chunks = items[chunkSize:], append(chunks, items[0:chunkSize:chunkSize])
+	}
+	return append(chunks, items)
+}

internal/storage/schemas.go

@@ -0,0 +1,222 @@
+package storage
+
+import (
+	"bytes"
+	"context"
+	"database/sql"
+	"embed"
+	"encoding/json"
+	"log"
+	"path"
+	"sort"
+	"strings"
+	"text/template"
+	"time"
+
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/semver"
+	"github.com/leporo/sqlf"
+)
+
+//go:embed schemas/*
+var schemaScripts embed.FS
+
+// Create tables and apply schemas if required
+func dbApplySchemas() error {
+	if _, err := db.Exec(`CREATE TABLE IF NOT EXISTS ` + tenant("schemas") + ` (Version TEXT PRIMARY KEY NOT NULL)`); err != nil {
+		return err
+	}
+
+	var legacyMigrationTable int
+	err := db.QueryRow(`SELECT EXISTS(SELECT 1 FROM sqlite_master WHERE type='table' AND name=?)`, tenant("darwin_migrations")).Scan(&legacyMigrationTable)
+	if err != nil {
+		return err
+	}
+
+	if legacyMigrationTable == 1 {
+		rows, err := db.Query(`SELECT version FROM ` + tenant("darwin_migrations"))
+		if err != nil {
+			return err
+		}
+
+		legacySchemas := []string{}
+
+		for rows.Next() {
+			var oldID string
+			if err := rows.Scan(&oldID); err == nil {
+				legacySchemas = append(legacySchemas, semver.MajorMinor(oldID)+"."+semver.Patch(oldID))
+			}
+		}
+
+		legacySchemas = semver.SortMin(legacySchemas)
+
+		for _, v := range legacySchemas {
+			var migrated int
+			err := db.QueryRow(`SELECT EXISTS(SELECT 1 FROM `+tenant("schemas")+` WHERE Version = ?)`, v).Scan(&migrated)
+			if err != nil {
+				return err
+			}
+			if migrated == 0 {
+				// copy to tenant("schemas")
+				if _, err := db.Exec(`INSERT INTO `+tenant("schemas")+` (Version) VALUES (?)`, v); err != nil {
+					return err
+				}
+			}
+		}
+
+		// delete legacy migration database after 01/10/2024
+		if time.Now().After(time.Date(2024, 10, 1, 0, 0, 0, 0, time.Local)) {
+			if _, err := db.Exec(`DROP TABLE IF EXISTS ` + tenant("darwin_migrations")); err != nil {
+				return err
+			}
+		}
+	}
+
+	schemaFiles, err := schemaScripts.ReadDir("schemas")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	temp := template.New("")
+	temp.Funcs(
+		template.FuncMap{
+			"tenant": tenant,
+		},
+	)
+
+	type schema struct {
+		Name   string
+		Semver string
+	}
+
+	scripts := []schema{}
+
+	for _, s := range schemaFiles {
+		if !s.Type().IsRegular() || !strings.HasSuffix(s.Name(), ".sql") {
+			continue
+		}
+
+		schemaID := strings.TrimRight(s.Name(), ".sql")
+
+		if !semver.IsValid(schemaID) {
+			logger.Log().Warnf("[db] invalid schema name: %s", s.Name())
+			continue
+		}
+
+		script := schema{s.Name(), semver.MajorMinor(schemaID) + "." + semver.Patch(schemaID)}
+		scripts = append(scripts, script)
+	}
+
+	// sort schemas by semver, low to high
+	sort.Slice(scripts, func(i, j int) bool {
+		return semver.Compare(scripts[j].Semver, scripts[i].Semver) == 1
+	})
+
+	for _, s := range scripts {
+		var complete int
+		err := db.QueryRow(`SELECT EXISTS(SELECT 1 FROM `+tenant("schemas")+` WHERE Version = ?)`, s.Semver).Scan(&complete)
+		if err != nil {
+			return err
+		}
+
+		if complete == 1 {
+			// already completed, ignore
+			continue
+		}
+		// use path.Join for Windows compatibility, see https://github.com/golang/go/issues/44305
+		b, err := schemaScripts.ReadFile(path.Join("schemas", s.Name))
+		if err != nil {
+			return err
+		}
+
+		// parse import script
+		t1, err := temp.Parse(string(b))
+		if err != nil {
+			return err
+		}
+
+		buf := new(bytes.Buffer)
+
+		err = t1.Execute(buf, nil)
+
+		if _, err := db.Exec(buf.String()); err != nil {
+			return err
+		}
+
+		if _, err := db.Exec(`INSERT INTO `+tenant("schemas")+` (Version) VALUES (?)`, s.Semver); err != nil {
+			return err
+		}
+
+		logger.Log().Debugf("[db] applied schema: %s", s.Name)
+	}
+
+	return nil
+}
+
+// These functions are used to migrate data formats/structure on startup.
+func dataMigrations() {
+	// ensure DeletedSize has a value if empty
+	if SettingGet("DeletedSize") == "" {
+		_ = SettingPut("DeletedSize", "0")
+	}
+
+	migrateTagsToManyMany()
+}
+
+// Migrate tags to ManyMany structure
+// Migration task implemented 12/2023
+// TODO: Can be removed end 06/2024 and Tags column & index dropped from mailbox
+func migrateTagsToManyMany() {
+	toConvert := make(map[string][]string)
+	q := sqlf.
+		Select("ID, Tags").
+		From(tenant("mailbox")).
+		Where("Tags != ?", "[]").
+		Where("Tags IS NOT NULL")
+
+	if err := q.QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+		var id string
+		var jsonTags string
+		if err := row.Scan(&id, &jsonTags); err != nil {
+			logger.Log().Errorf("[migration] %s", err.Error())
+			return
+		}
+
+		tags := []string{}
+
+		if err := json.Unmarshal([]byte(jsonTags), &tags); err != nil {
+			logger.Log().Errorf("[json] %s", err.Error())
+			return
+		}
+
+		toConvert[id] = tags
+	}); err != nil {
+		logger.Log().Errorf("[migration] %s", err.Error())
+	}
+
+	if len(toConvert) > 0 {
+		logger.Log().Infof("[migration] converting %d message tags", len(toConvert))
+		for id, tags := range toConvert {
+			if err := SetMessageTags(id, tags); err != nil {
+				logger.Log().Errorf("[migration] %s", err.Error())
+			} else {
+				if _, err := sqlf.Update(tenant("mailbox")).
+					Set("Tags", nil).
+					Where("ID = ?", id).
+					ExecAndClose(context.TODO(), db); err != nil {
+					logger.Log().Errorf("[migration] %s", err.Error())
+				}
+			}
+		}
+
+		logger.Log().Info("[migration] tags conversion complete")
+	}
+
+	// set all legacy `[]` tags to NULL
+	if _, err := sqlf.Update(tenant("mailbox")).
+		Set("Tags", nil).
+		Where("Tags = ?", "[]").
+		ExecAndClose(context.TODO(), db); err != nil {
+		logger.Log().Errorf("[migration] %s", err.Error())
+	}
+}

internal/storage/schemas/1.0.0.sql

@@ -0,0 +1,19 @@
+-- CREATE TABLES
+CREATE TABLE IF NOT EXISTS {{ tenant "mailbox" }} (
+	Sort INTEGER PRIMARY KEY AUTOINCREMENT,
+	ID TEXT NOT NULL,
+	Data BLOB,
+	Search TEXT,
+	Read INTEGER
+);
+
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_sort" }} ON {{ tenant "mailbox" }} (Sort);
+CREATE UNIQUE INDEX IF NOT EXISTS {{ tenant "idx_id" }} ON {{ tenant "mailbox" }} (ID);
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_read" }} ON {{ tenant "mailbox" }} (Read);
+
+CREATE TABLE IF NOT EXISTS {{ tenant "mailbox_data" }} (
+	ID TEXT KEY NOT NULL,
+	Email BLOB
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS {{ tenant "idx_data_id" }} ON {{ tenant "mailbox_data" }} (ID);

internal/storage/schemas/1.1.0.sql

@@ -0,0 +1,3 @@
+-- CREATE TAGS COLUMN
+ALTER TABLE {{ tenant "mailbox" }} ADD COLUMN Tags Text NOT NULL DEFAULT '[]';
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_tags" }} ON {{ tenant "mailbox" }} (Tags);

internal/storage/schemas/1.2.0.sql

@@ -0,0 +1,36 @@
+-- CREATING NEW MAILBOX FORMAT
+CREATE TABLE IF NOT EXISTS {{ tenant "mailboxtmp" }} (
+	Created INTEGER NOT NULL,
+	ID TEXT NOT NULL,
+	MessageID TEXT NOT NULL,
+	Subject TEXT NOT NULL,
+	Metadata TEXT,
+	Size INTEGER NOT NULL,
+	Inline INTEGER NOT NULL,
+	Attachments INTEGER NOT NULL,
+	Read INTEGER,
+	Tags TEXT,
+	SearchText TEXT
+);
+
+INSERT INTO {{ tenant "mailboxtmp" }}
+	(Created, ID, MessageID, Subject, Metadata, Size, Inline, Attachments, SearchText, Read, Tags) 
+	SELECT 
+		Sort, ID, '', json_extract(Data, '$.Subject'),Data, 
+		json_extract(Data, '$.Size'), json_extract(Data, '$.Inline'), json_extract(Data, '$.Attachments'), 
+		Search, Read, Tags
+	FROM {{ tenant "mailbox" }};
+
+DROP TABLE IF EXISTS {{ tenant "mailbox" }};
+
+ALTER TABLE {{ tenant "mailboxtmp" }} RENAME TO {{ tenant "mailbox" }};
+
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_created" }} ON {{ tenant "mailbox" }} (Created);
+CREATE UNIQUE INDEX IF NOT EXISTS {{ tenant "idx_id" }} ON {{ tenant "mailbox" }} (ID);
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_message_id" }} ON {{ tenant "mailbox" }} (MessageID);
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_subject" }} ON {{ tenant "mailbox" }} (Subject);
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_size" }} ON {{ tenant "mailbox" }} (Size);
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_inline" }} ON {{ tenant "mailbox" }} (Inline);
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_attachments" }} ON {{ tenant "mailbox" }} (Attachments);
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_read" }} ON {{ tenant "mailbox" }} (Read);
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_tags" }} ON {{ tenant "mailbox" }} (Tags);

internal/storage/schemas/1.3.0.sql

@@ -0,0 +1,2 @@
+-- CREATE SNIPPET COLUMN
+ALTER TABLE {{ tenant "mailbox" }} ADD COLUMN Snippet TEXT NOT NULL DEFAULT '';

internal/storage/schemas/1.4.0.sql

@@ -0,0 +1,16 @@
+-- CREATE TAG TABLES
+CREATE TABLE IF NOT EXISTS {{ tenant "tags" }} (
+	ID INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+	Name TEXT COLLATE NOCASE
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS {{ tenant "idx_tag_name" }} ON {{ tenant "tags" }} (Name);
+
+CREATE TABLE IF NOT EXISTS {{ tenant "message_tags" }} (
+	Key INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+	ID TEXT REFERENCES {{ tenant "mailbox" }} (ID),
+	TagID INT REFERENCES {{ tenant "tags" }} (ID)
+);
+
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_message_tag_id" }} ON {{ tenant "message_tags" }} (ID);
+CREATE INDEX IF NOT EXISTS {{ tenant "idx_message_tag_tagid" }} ON {{ tenant "message_tags" }} (TagID);

internal/storage/schemas/1.5.0.sql

@@ -0,0 +1,7 @@
+-- CREATE SETTINGS TABLE
+CREATE TABLE IF NOT EXISTS {{ tenant "settings" }} (
+	Key TEXT,
+	Value TEXT
+);
+CREATE UNIQUE INDEX IF NOT EXISTS {{ tenant "idx_settings_key" }} ON {{ tenant "settings" }} (Key);
+INSERT INTO {{ tenant "settings" }} (Key, Value) VALUES ("DeletedSize", (SELECT SUM(Size)/2 FROM {{ tenant "mailbox" }}));

internal/storage/schemas/README.md

@@ -0,0 +1,5 @@
+# Migration scripts
+
+- Scripts should be named using semver and have the `.sql` extension.
+- Inline comments should be prefixed with a `--`
+- All references to tables and indexes should be wrapped with a `{{ tenant "<name>" }}`

internal/storage/search.go

@@ -0,0 +1,399 @@
+package storage
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"regexp"
+	"strings"
+	"time"
+
+	"github.com/araddon/dateparse"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/tools"
+	"github.com/leporo/sqlf"
+)
+
+// Search will search a mailbox for search terms.
+// The search is broken up by segments (exact phrases can be quoted), and interprets specific terms such as:
+// is:read, is:unread, has:attachment, to:<term>, from:<term> & subject:<term>
+// Negative searches also also included by prefixing the search term with a `-` or `!`
+func Search(search, timezone string, start, limit int) ([]MessageSummary, int, error) {
+	results := []MessageSummary{}
+	allResults := []MessageSummary{}
+	tsStart := time.Now()
+	nrResults := 0
+	if limit < 0 {
+		limit = 50
+	}
+
+	q := searchQueryBuilder(search, timezone)
+	var err error
+
+	if err := q.QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+		var created float64
+		var id string
+		var messageID string
+		var subject string
+		var metadata string
+		var size float64
+		var attachments int
+		var snippet string
+		var read int
+		var ignore string
+		em := MessageSummary{}
+
+		if err := row.Scan(&created, &id, &messageID, &subject, &metadata, &size, &attachments, &read, &snippet, &ignore, &ignore, &ignore, &ignore, &ignore); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+			return
+		}
+
+		if err := json.Unmarshal([]byte(metadata), &em); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+			return
+		}
+
+		em.Created = time.UnixMilli(int64(created))
+		em.ID = id
+		em.MessageID = messageID
+		em.Subject = subject
+		em.Size = size
+		em.Attachments = attachments
+		em.Read = read == 1
+		em.Snippet = snippet
+
+		allResults = append(allResults, em)
+	}); err != nil {
+		return results, nrResults, err
+	}
+
+	dbLastAction = time.Now()
+
+	nrResults = len(allResults)
+
+	if nrResults > start {
+		end := nrResults
+		if nrResults >= start+limit {
+			end = start + limit
+		}
+
+		results = allResults[start:end]
+	}
+
+	// set tags for listed messages only
+	for i, m := range results {
+		results[i].Tags = getMessageTags(m.ID)
+	}
+
+	elapsed := time.Since(tsStart)
+
+	logger.Log().Debugf("[db] search for \"%s\" in %s", search, elapsed)
+
+	return results, nrResults, err
+}
+
+// DeleteSearch will delete all messages for search terms.
+// The search is broken up by segments (exact phrases can be quoted), and interprets specific terms such as:
+// is:read, is:unread, has:attachment, to:<term>, from:<term> & subject:<term>
+// Negative searches also also included by prefixing the search term with a `-` or `!`
+func DeleteSearch(search, timezone string) error {
+	q := searchQueryBuilder(search, timezone)
+
+	ids := []string{}
+	deleteSize := float64(0)
+
+	if err := q.QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+		var created float64
+		var id string
+		var messageID string
+		var subject string
+		var metadata string
+		var size float64
+		var attachments int
+		var read int
+		var snippet string
+		var ignore string
+
+		if err := row.Scan(&created, &id, &messageID, &subject, &metadata, &size, &attachments, &read, &snippet, &ignore, &ignore, &ignore, &ignore, &ignore); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+			return
+		}
+
+		ids = append(ids, id)
+		deleteSize = deleteSize + size
+	}); err != nil {
+		return err
+	}
+
+	if len(ids) > 0 {
+		total := len(ids)
+
+		// split ids into chunks of 1000 ids
+		var chunks [][]string
+		if total > 1000 {
+			chunkSize := 1000
+			chunks = make([][]string, 0, (len(ids)+chunkSize-1)/chunkSize)
+			for chunkSize < len(ids) {
+				ids, chunks = ids[chunkSize:], append(chunks, ids[0:chunkSize:chunkSize])
+			}
+			if len(ids) > 0 {
+				// add remaining ids <= 1000
+				chunks = append(chunks, ids)
+			}
+		} else {
+			chunks = append(chunks, ids)
+		}
+
+		// begin a transaction to ensure both the message
+		// and data are deleted successfully
+		tx, err := db.BeginTx(context.Background(), nil)
+		if err != nil {
+			return err
+		}
+
+		// roll back if it fails
+		defer tx.Rollback()
+
+		for _, ids := range chunks {
+			delIDs := make([]interface{}, len(ids))
+			for i, id := range ids {
+				delIDs[i] = id
+			}
+
+			sqlDelete1 := `DELETE FROM ` + tenant("mailbox") + ` WHERE ID IN (?` + strings.Repeat(",?", len(ids)-1) + `)` // #nosec
+
+			_, err = tx.Exec(sqlDelete1, delIDs...)
+			if err != nil {
+				return err
+			}
+
+			sqlDelete2 := `DELETE FROM ` + tenant("mailbox_data") + ` WHERE ID IN (?` + strings.Repeat(",?", len(ids)-1) + `)` // #nosec
+
+			_, err = tx.Exec(sqlDelete2, delIDs...)
+			if err != nil {
+				return err
+			}
+
+			sqlDelete3 := `DELETE FROM ` + tenant("message_tags") + ` WHERE ID IN (?` + strings.Repeat(",?", len(ids)-1) + `)` // #nosec
+
+			_, err = tx.Exec(sqlDelete3, delIDs...)
+			if err != nil {
+				return err
+			}
+		}
+
+		err = tx.Commit()
+
+		if err := pruneUnusedTags(); err != nil {
+			return err
+		}
+
+		if err == nil {
+			logger.Log().Debugf("[db] deleted %d messages matching %s", total, search)
+		}
+
+		dbLastAction = time.Now()
+		addDeletedSize(int64(deleteSize))
+
+		logMessagesDeleted(total)
+
+		BroadcastMailboxStats()
+	}
+
+	return nil
+}
+
+// SearchParser returns the SQL syntax for the database search based on the search arguments
+func searchQueryBuilder(searchString, timezone string) *sqlf.Stmt {
+	// group strings with quotes as a single argument and remove quotes
+	args := tools.ArgsParser(searchString)
+
+	if timezone != "" {
+		loc, err := time.LoadLocation(timezone)
+		if err != nil {
+			logger.Log().Warnf("ignoring invalid timezone:\"%s\"", timezone)
+		} else {
+			time.Local = loc
+		}
+	}
+
+	q := sqlf.From(tenant("mailbox") + " m").
+		Select(`m.Created, m.ID, m.MessageID, m.Subject, m.Metadata, m.Size, m.Attachments, m.Read,
+			m.Snippet,
+			IFNULL(json_extract(Metadata, '$.To'), '{}') as ToJSON,
+			IFNULL(json_extract(Metadata, '$.From'), '{}') as FromJSON,
+			IFNULL(json_extract(Metadata, '$.Cc'), '{}') as CcJSON,
+			IFNULL(json_extract(Metadata, '$.Bcc'), '{}') as BccJSON,
+			IFNULL(json_extract(Metadata, '$.ReplyTo'), '{}') as ReplyToJSON
+		`).
+		OrderBy("m.Created DESC")
+
+	for _, w := range args {
+		if cleanString(w) == "" {
+			continue
+		}
+
+		// lowercase search to try match search prefixes
+		lw := strings.ToLower(w)
+
+		exclude := false
+		// search terms starting with a `-` or `!` imply an exclude
+		if len(w) > 1 && (strings.HasPrefix(w, "-") || strings.HasPrefix(w, "!")) {
+			exclude = true
+			w = w[1:]
+			lw = lw[1:]
+		}
+
+		re := regexp.MustCompile(`[a-zA-Z0-9]+`)
+		if !re.MatchString(w) {
+			continue
+		}
+
+		if strings.HasPrefix(lw, "to:") {
+			w = cleanString(w[3:])
+			if w != "" {
+				if exclude {
+					q.Where("ToJSON NOT LIKE ?", "%"+escPercentChar(w)+"%")
+				} else {
+					q.Where("ToJSON LIKE ?", "%"+escPercentChar(w)+"%")
+				}
+			}
+		} else if strings.HasPrefix(lw, "from:") {
+			w = cleanString(w[5:])
+			if w != "" {
+				if exclude {
+					q.Where("FromJSON NOT LIKE ?", "%"+escPercentChar(w)+"%")
+				} else {
+					q.Where("FromJSON LIKE ?", "%"+escPercentChar(w)+"%")
+				}
+			}
+		} else if strings.HasPrefix(lw, "cc:") {
+			w = cleanString(w[3:])
+			if w != "" {
+				if exclude {
+					q.Where("CcJSON NOT LIKE ?", "%"+escPercentChar(w)+"%")
+				} else {
+					q.Where("CcJSON LIKE ?", "%"+escPercentChar(w)+"%")
+				}
+			}
+		} else if strings.HasPrefix(lw, "bcc:") {
+			w = cleanString(w[4:])
+			if w != "" {
+				if exclude {
+					q.Where("BccJSON NOT LIKE ?", "%"+escPercentChar(w)+"%")
+				} else {
+					q.Where("BccJSON LIKE ?", "%"+escPercentChar(w)+"%")
+				}
+			}
+		} else if strings.HasPrefix(lw, "reply-to:") {
+			w = cleanString(w[9:])
+			if w != "" {
+				if exclude {
+					q.Where("ReplyToJSON NOT LIKE ?", "%"+escPercentChar(w)+"%")
+				} else {
+					q.Where("ReplyToJSON LIKE ?", "%"+escPercentChar(w)+"%")
+				}
+			}
+		} else if strings.HasPrefix(lw, "addressed:") {
+			w = cleanString(w[10:])
+			arg := "%" + escPercentChar(w) + "%"
+			if w != "" {
+				if exclude {
+					q.Where("(ToJSON NOT LIKE ? AND FromJSON NOT LIKE ? AND CcJSON NOT LIKE ? AND BccJSON NOT LIKE ? AND ReplyToJSON NOT LIKE ?)", arg, arg, arg, arg, arg)
+				} else {
+					q.Where("(ToJSON LIKE ? OR FromJSON LIKE ? OR CcJSON LIKE ? OR BccJSON LIKE ? OR ReplyToJSON LIKE ?)", arg, arg, arg, arg, arg)
+				}
+			}
+		} else if strings.HasPrefix(lw, "subject:") {
+			w = w[8:]
+			if w != "" {
+				if exclude {
+					q.Where("Subject NOT LIKE ?", "%"+escPercentChar(w)+"%")
+				} else {
+					q.Where("Subject LIKE ?", "%"+escPercentChar(w)+"%")
+				}
+			}
+		} else if strings.HasPrefix(lw, "message-id:") {
+			w = cleanString(w[11:])
+			if w != "" {
+				if exclude {
+					q.Where("MessageID NOT LIKE ?", "%"+escPercentChar(w)+"%")
+				} else {
+					q.Where("MessageID LIKE ?", "%"+escPercentChar(w)+"%")
+				}
+			}
+		} else if strings.HasPrefix(lw, "tag:") {
+			w = cleanString(w[4:])
+			if w != "" {
+				if exclude {
+					q.Where(`m.ID NOT IN (SELECT mt.ID FROM `+tenant("message_tags")+` mt JOIN `+tenant("tags")+` t ON mt.TagID = t.ID WHERE t.Name = ?)`, w)
+				} else {
+					q.Where(`m.ID IN (SELECT mt.ID FROM `+tenant("message_tags")+` mt JOIN `+tenant("tags")+` t ON mt.TagID = t.ID WHERE t.Name = ?)`, w)
+				}
+			}
+		} else if lw == "is:read" {
+			if exclude {
+				q.Where("Read = 0")
+			} else {
+				q.Where("Read = 1")
+			}
+		} else if lw == "is:unread" {
+			if exclude {
+				q.Where("Read = 1")
+			} else {
+				q.Where("Read = 0")
+			}
+		} else if lw == "is:tagged" {
+			if exclude {
+				q.Where(`m.ID NOT IN (SELECT DISTINCT mt.ID FROM ` + tenant("message_tags") + ` mt JOIN tags t ON mt.TagID = t.ID)`)
+			} else {
+				q.Where(`m.ID IN (SELECT DISTINCT mt.ID FROM ` + tenant("message_tags") + ` mt JOIN tags t ON mt.TagID = t.ID)`)
+			}
+		} else if lw == "has:attachment" || lw == "has:attachments" {
+			if exclude {
+				q.Where("Attachments = 0")
+			} else {
+				q.Where("Attachments > 0")
+			}
+		} else if strings.HasPrefix(lw, "after:") {
+			w = cleanString(w[6:])
+			if w != "" {
+				t, err := dateparse.ParseLocal(w)
+				if err != nil {
+					logger.Log().Warnf("ignoring invalid after: date \"%s\"", w)
+				} else {
+					timestamp := t.UnixMilli()
+					if exclude {
+						q.Where(`m.Created <= ?`, timestamp)
+					} else {
+						q.Where(`m.Created >= ?`, timestamp)
+					}
+				}
+			}
+		} else if strings.HasPrefix(lw, "before:") {
+			w = cleanString(w[7:])
+			if w != "" {
+				t, err := dateparse.ParseLocal(w)
+				if err != nil {
+					logger.Log().Warnf("ignoring invalid before: date \"%s\"", w)
+				} else {
+					timestamp := t.UnixMilli()
+					if exclude {
+						q.Where(`m.Created >= ?`, timestamp)
+					} else {
+						q.Where(`m.Created <= ?`, timestamp)
+					}
+				}
+			}
+		} else {
+			// search text
+			if exclude {
+				q.Where("SearchText NOT LIKE ?", "%"+cleanString(escPercentChar(strings.ToLower(w)))+"%")
+			} else {
+				q.Where("SearchText LIKE ?", "%"+cleanString(escPercentChar(strings.ToLower(w)))+"%")
+			}
+		}
+	}
+
+	return q
+}

internal/storage/search_test.go

@@ -0,0 +1,182 @@
+package storage
+
+import (
+	"bytes"
+	"fmt"
+	"math/rand"
+	"testing"
+
+	"github.com/jhillyerd/enmime"
+)
+
+func TestSearch(t *testing.T) {
+	setup()
+	defer Close()
+
+	t.Log("Testing search")
+	for i := 0; i < testRuns; i++ {
+		msg := enmime.Builder().
+			From(fmt.Sprintf("From %d", i), fmt.Sprintf("from-%d@example.com", i)).
+			CC(fmt.Sprintf("CC %d", i), fmt.Sprintf("cc-%d@example.com", i)).
+			CC(fmt.Sprintf("CC2 %d", i), fmt.Sprintf("cc2-%d@example.com", i)).
+			Subject(fmt.Sprintf("Subject line %d end", i)).
+			Text([]byte(fmt.Sprintf("This is the email body %d <jdsauk;dwqmdqw;>.", i))).
+			To(fmt.Sprintf("To %d", i), fmt.Sprintf("to-%d@example.com", i)).
+			To(fmt.Sprintf("To2 %d", i), fmt.Sprintf("to2-%d@example.com", i)).
+			ReplyTo(fmt.Sprintf("Reply To %d", i), fmt.Sprintf("reply-to-%d@example.com", i))
+
+		env, err := msg.Build()
+		if err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+
+		buf := new(bytes.Buffer)
+
+		if err := env.Encode(buf); err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+
+		bufBytes := buf.Bytes()
+
+		if _, err := Store(&bufBytes); err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+	}
+
+	for i := 1; i < 51; i++ {
+		// search a random something that will return a single result
+		uniqueSearches := []string{
+			fmt.Sprintf("from-%d@example.com", i),
+			fmt.Sprintf("from:from-%d@example.com", i),
+			fmt.Sprintf("to-%d@example.com", i),
+			fmt.Sprintf("to:to-%d@example.com", i),
+			fmt.Sprintf("to2-%d@example.com", i),
+			fmt.Sprintf("to:to2-%d@example.com", i),
+			fmt.Sprintf("cc-%d@example.com", i),
+			fmt.Sprintf("cc:cc-%d@example.com", i),
+			fmt.Sprintf("cc2-%d@example.com", i),
+			fmt.Sprintf("cc:cc2-%d@example.com", i),
+			fmt.Sprintf("reply-to-%d@example.com", i),
+			fmt.Sprintf("reply-to:\"reply-to-%d@example.com\"", i),
+			fmt.Sprintf("\"Subject line %d end\"", i),
+			fmt.Sprintf("subject:\"Subject line %d end\"", i),
+			fmt.Sprintf("\"the email body %d jdsauk dwqmdqw\"", i),
+		}
+		searchIdx := rand.Intn(len(uniqueSearches))
+
+		search := uniqueSearches[searchIdx]
+
+		summaries, _, err := Search(search, "", 0, 100)
+		if err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+
+		assertEqual(t, len(summaries), 1, "search result expected")
+
+		assertEqual(t, summaries[0].From.Name, fmt.Sprintf("From %d", i), "\"From\" name does not match")
+		assertEqual(t, summaries[0].From.Address, fmt.Sprintf("from-%d@example.com", i), "\"From\" address does not match")
+		assertEqual(t, summaries[0].To[0].Name, fmt.Sprintf("To %d", i), "\"To\" name does not match")
+		assertEqual(t, summaries[0].To[0].Address, fmt.Sprintf("to-%d@example.com", i), "\"To\" address does not match")
+		assertEqual(t, summaries[0].Subject, fmt.Sprintf("Subject line %d end", i), "\"Subject\" does not match")
+	}
+
+	// search something that will return 200 results
+	summaries, _, err := Search("This is the email body", "", 0, testRuns)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+	assertEqual(t, len(summaries), testRuns, "search results expected")
+}
+
+func TestSearchDelete100(t *testing.T) {
+	setup()
+	defer Close()
+
+	t.Log("Testing search delete of 100 messages")
+	for i := 0; i < 100; i++ {
+		if _, err := Store(&testTextEmail); err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+		if _, err := Store(&testMimeEmail); err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+	}
+
+	_, total, err := Search("from:sender@example.com", "", 0, 100)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	assertEqual(t, total, 100, "100 search results expected")
+
+	if err := DeleteSearch("from:sender@example.com", ""); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	_, total, err = Search("from:sender@example.com", "", 0, 100)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	assertEqual(t, total, 0, "0 search results expected")
+}
+
+func TestSearchDelete1100(t *testing.T) {
+	setup()
+	defer Close()
+
+	t.Log("Testing search delete of 1100 messages")
+	for i := 0; i < 1100; i++ {
+		if _, err := Store(&testTextEmail); err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+	}
+
+	_, total, err := Search("from:sender@example.com", "", 0, 100)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	assertEqual(t, total, 1100, "100 search results expected")
+
+	if err := DeleteSearch("from:sender@example.com", ""); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	_, total, err = Search("from:sender@example.com", "", 0, 100)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	assertEqual(t, total, 0, "0 search results expected")
+}
+
+func TestEscPercentChar(t *testing.T) {
+	tests := map[string]string{}
+	tests["this is a test"] = "this is a test"
+	tests["this is% a test"] = "this is%% a test"
+	tests["this is%% a test"] = "this is%%%% a test"
+	tests["this is%%% a test"] = "this is%%%%%% a test"
+	tests["%this is% a test"] = "%%this is%% a test"
+	tests["Ä"] = "Ä"
+	tests["Ä%"] = "Ä%%"
+
+	for search, expected := range tests {
+		res := escPercentChar(search)
+		assertEqual(t, res, expected, "no match")
+	}
+}

internal/storage/settings.go

@@ -0,0 +1,76 @@
+package storage
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/leporo/sqlf"
+)
+
+// SettingGet returns a setting string value, blank is it does not exist
+func SettingGet(k string) string {
+	var result sql.NullString
+	err := sqlf.From(tenant("settings")).
+		Select("Value").To(&result).
+		Where("Key = ?", k).
+		Limit(1).
+		QueryAndClose(context.TODO(), db, func(row *sql.Rows) {})
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return ""
+	}
+
+	return result.String
+}
+
+// SettingPut sets a setting string value, inserting if new
+func SettingPut(k, v string) error {
+	_, err := db.Exec(`INSERT INTO `+tenant("settings")+` (Key, Value) VALUES(?, ?) ON CONFLICT(Key) DO UPDATE SET Value = ?`, k, v, v)
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+	}
+
+	return err
+}
+
+// The total deleted message size as an int64 value
+func getDeletedSize() float64 {
+	var result sql.NullFloat64
+	err := sqlf.From(tenant("settings")).
+		Select("Value").To(&result).
+		Where("Key = ?", "DeletedSize").
+		Limit(1).
+		QueryAndClose(context.TODO(), db, func(row *sql.Rows) {})
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return 0
+	}
+
+	return result.Float64
+}
+
+// The total raw non-compressed messages size in bytes of all messages in the database
+func totalMessagesSize() float64 {
+	var result sql.NullFloat64
+	err := sqlf.From(tenant("mailbox")).
+		Select("SUM(Size)").To(&result).
+		QueryAndClose(context.TODO(), db, func(row *sql.Rows) {})
+	if err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+		return 0
+	}
+
+	return result.Float64
+}
+
+// AddDeletedSize will add the value to the DeletedSize setting
+func addDeletedSize(v int64) {
+	if _, err := db.Exec(`INSERT OR IGNORE INTO `+tenant("settings")+` (Key, Value) VALUES(?, ?)`, "DeletedSize", 0); err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+	}
+
+	if _, err := db.Exec(`UPDATE `+tenant("settings")+` SET Value = Value + ? WHERE Key = ?`, v, "DeletedSize"); err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+	}
+}

internal/storage/structs.go

@@ -15,8 +15,6 @@ type Message struct {
 	ID string
 	// Message ID
 	MessageID string
-	// Read status
-	Read bool
 	// From address
 	From *mail.Address
 	// To addresses
@@ -31,6 +29,9 @@ type Message struct {
 	ReturnPath string
 	// Message subject
 	Subject string
+	// List-Unsubscribe header information
+	// swagger:ignore
+	ListUnsubscribe ListUnsubscribe
 	// Message date if set, else date received
 	Date time.Time
 	// Message tags
@@ -40,7 +41,7 @@ type Message struct {
 	// Message body HTML
 	HTML string
 	// Message size in bytes
-	Size int
+	Size float64
 	// Inline message attachments
 	Inline []Attachment
 	// Message attachments
@@ -60,7 +61,7 @@ type Attachment struct {
 	// Content ID
 	ContentID string
 	// Size in bytes
-	Size int
+	Size float64
 }
 
 // MessageSummary struct for frontend messages
@@ -81,6 +82,8 @@ type MessageSummary struct {
 	Cc []*mail.Address
 	// Bcc addresses
 	Bcc []*mail.Address
+	// Reply-To address
+	ReplyTo []*mail.Address
 	// Email subject
 	Subject string
 	// Created time
@@ -88,18 +91,29 @@ type MessageSummary struct {
 	// Message tags
 	Tags []string
 	// Message size in bytes (total)
-	Size int
+	Size float64
 	// Whether the message has any attachments
 	Attachments int
+	// Message snippet includes up to 250 characters
+	Snippet string
 }
 
 // MailboxStats struct for quick mailbox total/read lookups
 type MailboxStats struct {
-	Total  int
-	Unread int
+	Total  float64
+	Unread float64
 	Tags   []string
 }
 
+// DBMailSummary struct for storing mail summary
+type DBMailSummary struct {
+	From    *mail.Address
+	To      []*mail.Address
+	Cc      []*mail.Address
+	Bcc     []*mail.Address
+	ReplyTo []*mail.Address
+}
+
 // AttachmentSummary returns a summary of the attachment without any binary data
 func AttachmentSummary(a *enmime.Part) Attachment {
 	o := Attachment{}
@@ -110,7 +124,20 @@ func AttachmentSummary(a *enmime.Part) Attachment {
 	}
 	o.ContentType = a.ContentType
 	o.ContentID = a.ContentID
-	o.Size = len(a.Content)
+	o.Size = float64(len(a.Content))
 
 	return o
 }
+
+// ListUnsubscribe contains a summary of List-Unsubscribe & List-Unsubscribe-Post headers
+// including validation of the link structure
+type ListUnsubscribe struct {
+	// List-Unsubscribe header value
+	Header string
+	// Detected links, maximum one email and one HTTP(S)
+	Links []string
+	// Validation errors if any
+	Errors string
+	// List-Unsubscribe-Post value if set
+	HeaderPost string
+}

internal/storage/tagfilters.go

@@ -0,0 +1,84 @@
+package storage
+
+import (
+	"context"
+	"database/sql"
+	"strings"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/tools"
+	"github.com/leporo/sqlf"
+)
+
+// TagFilter struct
+type TagFilter struct {
+	Match string
+	SQL   *sqlf.Stmt
+	Tags  []string
+}
+
+var tagFilters = []TagFilter{}
+
+// LoadTagFilters loads tag filters from the config and pre-generates the SQL query
+func LoadTagFilters() {
+	tagFilters = []TagFilter{}
+
+	for _, t := range config.TagFilters {
+		match := strings.TrimSpace(t.Match)
+		if match == "" {
+			logger.Log().Warnf("[tags] ignoring tag item with missing 'match'")
+			continue
+		}
+		if t.Tags == nil || len(t.Tags) == 0 {
+			logger.Log().Warnf("[tags] ignoring tag items with missing 'tags' array")
+			continue
+		}
+
+		validTags := []string{}
+		for _, tag := range t.Tags {
+			tagName := tools.CleanTag(tag)
+			if !config.ValidTagRegexp.MatchString(tagName) || len(tagName) == 0 {
+				logger.Log().Warnf("[tags] invalid tag (%s) - can only contain spaces, letters, numbers, - & _", tagName)
+				continue
+			}
+			validTags = append(validTags, tagName)
+		}
+
+		if len(validTags) == 0 {
+			continue
+		}
+
+		tagFilters = append(tagFilters, TagFilter{Match: match, Tags: validTags, SQL: searchQueryBuilder(match, "")})
+	}
+}
+
+// TagFilterMatches returns a slice of matching tags from a message
+func tagFilterMatches(id string) []string {
+	tags := []string{}
+
+	if len(tagFilters) == 0 {
+		return tags
+	}
+
+	for _, f := range tagFilters {
+		var matchID string
+		q := f.SQL.Clone().Where("ID = ?", id)
+		if err := q.QueryAndClose(context.Background(), db, func(row *sql.Rows) {
+			var ignore sql.NullString
+
+			if err := row.Scan(&ignore, &matchID, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore); err != nil {
+				logger.Log().Errorf("[db] %s", err.Error())
+				return
+			}
+		}); err != nil {
+			logger.Log().Errorf("[db] %s", err.Error())
+			return tags
+		}
+		if matchID == id {
+			tags = append(tags, f.Tags...)
+		}
+	}
+
+	return tags
+}

internal/storage/tags.go

@@ -0,0 +1,317 @@
+package storage
+
+import (
+	"bytes"
+	"context"
+	"database/sql"
+	"regexp"
+	"sort"
+	"strings"
+	"sync"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/tools"
+	"github.com/leporo/sqlf"
+)
+
+var (
+	addressPlusRe = regexp.MustCompile(`(?U)^(.*){1,}\+(.*)@`)
+	addTagMutex   sync.RWMutex
+)
+
+// SetMessageTags will set the tags for a given database ID, removing any not in the array
+func SetMessageTags(id string, tags []string) error {
+	applyTags := []string{}
+	for _, t := range tags {
+		t = tools.CleanTag(t)
+		if t != "" && config.ValidTagRegexp.MatchString(t) && !tools.InArray(t, applyTags) {
+			applyTags = append(applyTags, t)
+		}
+	}
+
+	currentTags := getMessageTags(id)
+	origTagCount := len(currentTags)
+
+	for _, t := range applyTags {
+		if t == "" || !config.ValidTagRegexp.MatchString(t) || tools.InArray(t, currentTags) {
+			continue
+		}
+
+		if err := AddMessageTag(id, t); err != nil {
+			return err
+		}
+	}
+
+	if origTagCount > 0 {
+		currentTags = getMessageTags(id)
+
+		for _, t := range currentTags {
+			if !tools.InArray(t, applyTags) {
+				if err := DeleteMessageTag(id, t); err != nil {
+					return err
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
+// AddMessageTag adds a tag to a message
+func AddMessageTag(id, name string) error {
+	// prevent two identical tags being added at the same time
+	addTagMutex.Lock()
+
+	var tagID int
+
+	q := sqlf.From(tenant("tags")).
+		Select("ID").To(&tagID).
+		Where("Name = ?", name)
+
+	// if tag exists - add tag to message
+	if err := q.QueryRowAndClose(context.TODO(), db); err == nil {
+		addTagMutex.Unlock()
+		// check message does not already have this tag
+		var count int
+
+		if err := sqlf.From(tenant("message_tags")).
+			Select("COUNT(ID)").To(&count).
+			Where("ID = ?", id).
+			Where("TagID = ?", tagID).
+			QueryRowAndClose(context.Background(), db); err != nil {
+			return err
+		}
+		if count > 0 {
+			// already exists
+			return nil
+		}
+
+		logger.Log().Debugf("[tags] adding tag \"%s\" to %s", name, id)
+
+		_, err := sqlf.InsertInto(tenant("message_tags")).
+			Set("ID", id).
+			Set("TagID", tagID).
+			ExecAndClose(context.TODO(), db)
+		return err
+	}
+
+	// new tag, add to the database
+	if _, err := sqlf.InsertInto(tenant("tags")).
+		Set("Name", name).
+		ExecAndClose(context.TODO(), db); err != nil {
+		addTagMutex.Unlock()
+		return err
+	}
+
+	addTagMutex.Unlock()
+
+	// add tag to the message
+	return AddMessageTag(id, name)
+}
+
+// DeleteMessageTag deleted a tag from a message
+func DeleteMessageTag(id, name string) error {
+	if _, err := sqlf.DeleteFrom(tenant("message_tags")).
+		Where(tenant("message_tags.ID")+" = ?", id).
+		Where(tenant("message_tags.Key")+` IN (SELECT Key FROM `+tenant("message_tags")+` LEFT JOIN tags ON `+tenant("TagID")+"="+tenant("tags.ID")+` WHERE Name = ?)`, name).
+		ExecAndClose(context.TODO(), db); err != nil {
+		return err
+	}
+
+	return pruneUnusedTags()
+}
+
+// DeleteAllMessageTags deleted all tags from a message
+func DeleteAllMessageTags(id string) error {
+	if _, err := sqlf.DeleteFrom(tenant("message_tags")).
+		Where(tenant("message_tags.ID")+" = ?", id).
+		ExecAndClose(context.TODO(), db); err != nil {
+		return err
+	}
+
+	return pruneUnusedTags()
+}
+
+// GetAllTags returns all used tags
+func GetAllTags() []string {
+	var tags = []string{}
+	var name string
+
+	if err := sqlf.
+		Select(`DISTINCT Name`).
+		From(tenant("tags")).To(&name).
+		OrderBy("Name").
+		QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+			tags = append(tags, name)
+		}); err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+	}
+
+	return tags
+}
+
+// GetAllTagsCount returns all used tags with their total messages
+func GetAllTagsCount() map[string]int64 {
+	var tags = make(map[string]int64)
+	var name string
+	var total int64
+
+	if err := sqlf.
+		Select(`Name`).To(&name).
+		Select(`COUNT(`+tenant("message_tags.TagID")+`) as total`).To(&total).
+		From(tenant("tags")).
+		LeftJoin(tenant("message_tags"), tenant("tags.ID")+" = "+tenant("message_tags.TagID")).
+		GroupBy(tenant("message_tags.TagID")).
+		OrderBy("Name").
+		QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+			tags[name] = total
+			// tags = append(tags, name)
+		}); err != nil {
+		logger.Log().Errorf("[db] %s", err.Error())
+	}
+
+	return tags
+}
+
+// PruneUnusedTags will delete all unused tags from the database
+func pruneUnusedTags() error {
+	q := sqlf.From(tenant("tags")).
+		Select(tenant("tags.ID")+", "+tenant("tags.Name")+", COUNT("+tenant("message_tags.ID")+") as COUNT").
+		LeftJoin(tenant("message_tags"), tenant("tags.ID")+" = "+tenant("message_tags.TagID")).
+		GroupBy(tenant("tags.ID"))
+
+	toDel := []int{}
+
+	if err := q.QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+		var n string
+		var id int
+		var c int
+
+		if err := row.Scan(&id, &n, &c); err != nil {
+			logger.Log().Errorf("[tags] %s", err.Error())
+			return
+		}
+
+		if c == 0 {
+			logger.Log().Debugf("[tags] deleting unused tag \"%s\"", n)
+			toDel = append(toDel, id)
+		}
+	}); err != nil {
+		return err
+	}
+
+	if len(toDel) > 0 {
+		for _, id := range toDel {
+			if _, err := sqlf.DeleteFrom(tenant("tags")).
+				Where("ID = ?", id).
+				ExecAndClose(context.TODO(), db); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+
+// Find tags set via --tags in raw message, useful for matching all headers etc.
+// This function is largely superseded by the database searching, however this
+// includes literally everything and is kept for backwards compatibility.
+// Returns a comma-separated string.
+func findTagsInRawMessage(message *[]byte) []string {
+	tags := []string{}
+	if len(tagFilters) == 0 {
+		return tags
+	}
+
+	str := bytes.ToLower(*message)
+	for _, t := range tagFilters {
+		if bytes.Contains(str, []byte(t.Match)) {
+			tags = append(tags, t.Tags...)
+		}
+	}
+
+	return tags
+}
+
+// Returns tags found in email plus addresses (eg: test+tagname@example.com)
+func (d DBMailSummary) tagsFromPlusAddresses() []string {
+	tags := []string{}
+	for _, c := range d.To {
+		matches := addressPlusRe.FindAllStringSubmatch(c.Address, 1)
+		if len(matches) == 1 {
+			tags = append(tags, strings.Split(matches[0][2], "+")...)
+		}
+	}
+	for _, c := range d.Cc {
+		matches := addressPlusRe.FindAllStringSubmatch(c.Address, 1)
+		if len(matches) == 1 {
+			tags = append(tags, strings.Split(matches[0][2], "+")...)
+		}
+	}
+	for _, c := range d.Bcc {
+		matches := addressPlusRe.FindAllStringSubmatch(c.Address, 1)
+		if len(matches) == 1 {
+			tags = append(tags, strings.Split(matches[0][2], "+")...)
+		}
+	}
+	matches := addressPlusRe.FindAllStringSubmatch(d.From.Address, 1)
+	if len(matches) == 1 {
+		tags = append(tags, strings.Split(matches[0][2], "+")...)
+	}
+
+	return tools.SetTagCasing(tags)
+}
+
+// Get message tags from the database for a given database ID
+// Used when parsing a raw email.
+func getMessageTags(id string) []string {
+	tags := []string{}
+	var name string
+
+	if err := sqlf.
+		Select(`Name`).To(&name).
+		From(tenant("Tags")).
+		LeftJoin(tenant("message_tags"), tenant("Tags.ID")+"="+tenant("message_tags.TagID")).
+		Where(tenant("message_tags.ID")+` = ?`, id).
+		OrderBy("Name").
+		QueryAndClose(context.TODO(), db, func(row *sql.Rows) {
+			tags = append(tags, name)
+		}); err != nil {
+		logger.Log().Errorf("[tags] %s", err.Error())
+		return tags
+	}
+
+	return tags
+}
+
+// SortedUniqueTags will return a unique slice of normalised tags
+func sortedUniqueTags(s []string) []string {
+	tags := []string{}
+	added := make(map[string]bool)
+
+	if len(s) == 0 {
+		return tags
+	}
+
+	for _, p := range s {
+		w := tools.CleanTag(p)
+		if w == "" {
+			continue
+		}
+		lc := strings.ToLower(w)
+		if _, exists := added[lc]; exists {
+			continue
+		}
+		if config.ValidTagRegexp.MatchString(w) {
+			added[lc] = true
+			tags = append(tags, w)
+		} else {
+			logger.Log().Debugf("[tags] ignoring invalid tag: %s", w)
+		}
+	}
+
+	sort.Strings(tags)
+
+	return tags
+}

internal/storage/tags_test.go

@@ -0,0 +1,130 @@
+package storage
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+)
+
+func TestTags(t *testing.T) {
+	setup()
+	defer Close()
+
+	t.Log("Testing tags")
+
+	ids := []string{}
+
+	for i := 0; i < 10; i++ {
+		id, err := Store(&testMimeEmail)
+		if err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+		ids = append(ids, id)
+	}
+
+	for i := 0; i < 10; i++ {
+		if err := SetMessageTags(ids[i], []string{fmt.Sprintf("Tag-%d", i)}); err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+	}
+
+	for i := 0; i < 10; i++ {
+		message, err := GetMessage(ids[i])
+		if err != nil {
+			t.Log("error ", err)
+			t.Fail()
+		}
+
+		if len(message.Tags) != 1 || message.Tags[0] != fmt.Sprintf("Tag-%d", i) {
+			t.Fatal("Message tags do not match")
+		}
+	}
+
+	if err := DeleteAllMessages(); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	// test 20 tags
+	id, err := Store(&testMimeEmail)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+	newTags := []string{}
+	for i := 0; i < 20; i++ {
+		// pad number with 0 to ensure they are returned alphabetically
+		newTags = append(newTags, fmt.Sprintf("AnotherTag %02d", i))
+	}
+	if err := SetMessageTags(id, newTags); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+	returnedTags := getMessageTags(id)
+	assertEqual(t, strings.Join(newTags, "|"), strings.Join(returnedTags, "|"), "Message tags do not match")
+
+	// remove first tag
+	if err := DeleteMessageTag(id, newTags[0]); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+	returnedTags = getMessageTags(id)
+	assertEqual(t, strings.Join(newTags[1:], "|"), strings.Join(returnedTags, "|"), "Message tags do not match after deleting 1")
+
+	// remove all tags
+	if err := DeleteAllMessageTags(id); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+	returnedTags = getMessageTags(id)
+	assertEqual(t, "", strings.Join(returnedTags, "|"), "Message tags should be empty")
+
+	// apply the same tag twice
+	if err := SetMessageTags(id, []string{"Duplicate Tag", "Duplicate Tag"}); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+	returnedTags = getMessageTags(id)
+	assertEqual(t, "Duplicate Tag", strings.Join(returnedTags, "|"), "Message tags should be duplicated")
+	if err := DeleteAllMessageTags(id); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	// apply tag with invalid characters
+	if err := SetMessageTags(id, []string{"Dirty! \"Tag\""}); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+	returnedTags = getMessageTags(id)
+	assertEqual(t, "Dirty Tag", strings.Join(returnedTags, "|"), "Dirty message tag did not clean as expected")
+	if err := DeleteAllMessageTags(id); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	// Check deleted message tags also prune the tags database
+	allTags := GetAllTags()
+	assertEqual(t, "", strings.Join(allTags, "|"), "Tags did not delete as expected")
+
+	if err := DeleteAllMessages(); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	// test 20 tags
+	id, err = Store(&testTagEmail)
+	if err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+
+	returnedTags = getMessageTags(id)
+	assertEqual(t, "BccTag|CcTag|FromFag|ToTag|X-tag1|X-tag2", strings.Join(returnedTags, "|"), "Tags not detected correctly")
+	if err := DeleteAllMessageTags(id); err != nil {
+		t.Log("error ", err)
+		t.Fail()
+	}
+}

internal/storage/testdata/mime-attachment.eml

@@ -1,4 +1,4 @@
-Delivered-To: recipient@example.com
+Delivered-To: recipient2@example.com
 Received: by 2002:a0c:fe87:0:0:0:0:0 with SMTP id d7csp145570qvs;
         Tue, 26 Jul 2022 20:42:36 -0700 (PDT)
 X-Received: by 2002:a17:902:f788:b0:16c:f48b:905e with SMTP id q8-20020a170902f78800b0016cf48b905emr19885972pln.60.1658893355881;
@@ -23,18 +23,18 @@ ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc
          uSfA==
 ARC-Authentication-Results: i=1; mx.google.com;
        dkim=pass header.i=@gmail.com header.s=20210112 header.b=mywi6bMa;
-       spf=pass (google.com: domain of sender@example.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=sender@example.com;
+       spf=pass (google.com: domain of sender2@example.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=sender2@example.com;
        dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com
-Return-Path: <sender@example.com>
+Return-Path: <sender2@example.com>
 Received: from mail-sor-f41.google.com (mail-sor-f41.google.com. [209.85.220.41])
         by mx.google.com with SMTPS id 11-20020aa7914b000000b0052ab192de4fsor8543241pfi.101.2022.07.26.20.42.35
-        for <recipient@example.com>
+        for <recipient2@example.com>
         (Google Transport Security);
         Tue, 26 Jul 2022 20:42:35 -0700 (PDT)
-Received-SPF: pass (google.com: domain of sender@example.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41;
+Received-SPF: pass (google.com: domain of sender2@example.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41;
 Authentication-Results: mx.google.com;
        dkim=pass header.i=@gmail.com header.s=20210112 header.b=mywi6bMa;
-       spf=pass (google.com: domain of sender@example.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=sender@example.com;
+       spf=pass (google.com: domain of sender2@example.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=sender2@example.com;
        dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com
 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
         d=gmail.com; s=20210112;
@@ -63,10 +63,10 @@ X-Gm-Message-State: AJIora/WUqr3biShTHQBjSlCKazFbrLxeYpxmr1VF0TpBUbjnJrcLT77
 X-Google-Smtp-Source: AGRyM1tai6X1Bx130Y1yHG5w2e0r8wx6bbI+H+YppWmQoT28TV3dSoYCqmeQK5VViW8WuvdOpQzhPQ==
 X-Received: by 2002:a62:29c3:0:b0:52b:f774:7242 with SMTP id p186-20020a6229c3000000b0052bf7747242mr12504553pfp.67.1658893354675;
         Tue, 26 Jul 2022 20:42:34 -0700 (PDT)
-Return-Path: <sender@example.com>
+Return-Path: <sender2@example.com>
 Received: from [192.168.1.2] ([8.8.8.8])
         by smtp.gmail.com with ESMTPSA id oj16-20020a17090b4d9000b001f291c9d3bdsm387578pjb.48.2022.07.26.20.42.32
-        for <recipient@example.com>
+        for <recipient2@example.com>
         (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128);
         Tue, 26 Jul 2022 20:42:33 -0700 (PDT)
 Content-Type: multipart/mixed; boundary="------------ae0qIOkrNQLQHe1YyfTsUXrk"
@@ -76,8 +76,8 @@ MIME-Version: 1.0
 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101
  Thunderbird/91.11.0
 Content-Language: en-NZ
-To: "Recipient Ross" <recipient@example.com>
-From: Sender Smith <sender@example.com>
+To: "Recipient Ross" <recipient2@example.com>
+From: Sender Smith <sender2@example.com>
 Subject: inline + attachment
 
 This is a multi-part message in MIME format.
@@ -108,10 +108,9 @@ Content-Transfer-Encoding: 7bit
     <meta http-equiv="content-type" content="text/html; charset=UTF-8">
   </head>
   <body>
-    Message with inline image and attachment:<br>
+    <h1>Message with inline image and attachment:</h1>
     <br>
-    <img src="cid:part1.845LaYlX.wtWMpWwa@gmail.com"
-      moz-do-not-send="false"><br>
+    <p><img src="cid:part1.845LaYlX.wtWMpWwa@gmail.com"></p>
     <br>
     <br>
   </body>

internal/storage/testdata/tags.eml

@@ -0,0 +1,49 @@
+Date: Wed, 27 Jul 2022 15:44:41 +1200
+From: Sender Smith <sender+FromFag@example.com>
+To: Recipient Ross <recipient+ToTag@example.com>
+Cc: Recipient Ross <cc+CcTag@example.com>
+Bcc: <bcc+BccTag@example.com>
+Subject: Plain text message
+X-Tags: X-tag1, X-tag2
+Message-ID: <20220727034441.7za34h6ljuzfpmj3@localhost.localhost>
+MIME-Version: 1.0
+Content-Type: text/plain; charset=us-ascii
+Content-Disposition: inline
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras non massa lacinia, 
+fringilla ex vel, ornare nulla. Suspendisse dapibus commodo sapien, non 
+hendrerit diam feugiat sit amet. Nulla lorem quam, laoreet vitae nisl volutpat, 
+mollis bibendum felis. In eget ultricies justo. Donec vitae hendrerit tortor, at 
+posuere libero. Fusce a gravida nibh. Nulla ac odio ex.
+
+Aliquam sem turpis, cursus vitae condimentum at, scelerisque pulvinar lectus. 
+Cras tempor nisl ut arcu interdum, et luctus arcu cursus. Maecenas mollis 
+sagittis commodo. Mauris ac lorem nec ex interdum consequat. Morbi congue 
+ultrices ullamcorper. Aenean ex tortor, dapibus quis dapibus iaculis, iaculis 
+eget felis. Vestibulum purus ante, efficitur in turpis ac, tristique laoreet 
+orci. Nulla facilisi. Praesent mollis orci posuere elementum laoreet. 
+Pellentesque enim nibh, varius at ante id, consequat posuere ante.
+
+Cras maximus venenatis nulla nec cursus. Morbi convallis, enim eget viverra 
+vulputate, ipsum arcu tincidunt tortor, ut cursus dui enim commodo quam. Donec 
+et vulputate quam. Vivamus non posuere erat. Nam commodo pellentesque 
+condimentum. Vivamus condimentum eros at odio dictum feugiat. Ut imperdiet 
+tempor luctus. Aenean varius libero ac faucibus dictum. Aliquam sed finibus 
+massa. Morbi dolor lorem, feugiat quis neque et, suscipit posuere ex. Sed auctor 
+et augue at finibus. Vestibulum interdum mi ac justo porta aliquam. Curabitur 
+nec enim sit amet enim aliquet accumsan. Etiam accumsan tellus tortor, interdum 
+sodales odio finibus eu. Integer eget ante eu nisi lobortis pulvinar et vel 
+ipsum. Cras condimentum posuere vulputate.
+
+Cras nulla felis, blandit vitae egestas quis, fringilla ut dolor. Phasellus est 
+augue, feugiat eu risus quis, posuere ultrices libero. Phasellus non nunc eget 
+justo sollicitudin tincidunt. Praesent pretium dui id felis bibendum sodales. 
+Phasellus eget dictum libero, auctor tempor nibh. Suspendisse posuere libero 
+venenatis elit imperdiet porttitor. In condimentum dictum luctus. Nullam in 
+nulla vitae augue blandit posuere. Vestibulum consectetur ultricies tincidunt. 
+Vivamus dolor quam, pharetra sed eros sed, hendrerit ultrices diam. Vestibulum 
+vulputate tellus eget tellus lacinia, a pulvinar velit vulputate. Suspendisse 
+mauris odio, scelerisque eget turpis sed, tincidunt ultrices magna. Nunc arcu 
+arcu, commodo et porttitor quis, accumsan viverra purus. Fusce id libero iaculis 
+lorem tristique commodo porttitor id ipsum. Vestibulum odio dui, tincidunt eget 
+lectus vel, tristique lacinia libero. Aliquam dapibus ac felis vitae cursus.

internal/storage/testing.go

@@ -0,0 +1,68 @@
+package storage
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+)
+
+var (
+	testTextEmail []byte
+	testTagEmail  []byte
+	testMimeEmail []byte
+	testRuns      = 100
+)
+
+func setup() {
+	logger.NoLogging = true
+	config.MaxMessages = 0
+	config.Database = os.Getenv("MP_DATABASE")
+
+	if err := InitDB(); err != nil {
+		panic(err)
+	}
+
+	var err error
+
+	// ensure DB is empty
+	if err := DeleteAllMessages(); err != nil {
+		panic(err)
+	}
+
+	testTextEmail, err = os.ReadFile("testdata/plain-text.eml")
+	if err != nil {
+		panic(err)
+	}
+
+	testTagEmail, err = os.ReadFile("testdata/tags.eml")
+	if err != nil {
+		panic(err)
+	}
+
+	testMimeEmail, err = os.ReadFile("testdata/mime-attachment.eml")
+	if err != nil {
+		panic(err)
+	}
+}
+
+func assertEqual(t *testing.T, a interface{}, b interface{}, message string) {
+	if a == b {
+		return
+	}
+	message = fmt.Sprintf("%s: \"%v\" != \"%v\"", message, a, b)
+	t.Fatal(message)
+}
+
+func assertEqualStats(t *testing.T, total int, unread int) {
+	s := StatsGet()
+	if float64(total) != s.Total {
+		t.Fatalf("Incorrect total mailbox stats: \"%v\" != \"%v\"", total, s.Total)
+	}
+
+	if float64(unread) != s.Unread {
+		t.Fatalf("Incorrect unread mailbox stats: \"%v\" != \"%v\"", unread, s.Unread)
+	}
+}

internal/storage/utils.go

@@ -0,0 +1,93 @@
+package storage
+
+import (
+	"net/mail"
+	"os"
+	"regexp"
+	"strings"
+	"sync"
+
+	"github.com/axllent/mailpit/internal/html2text"
+	"github.com/jhillyerd/enmime"
+)
+
+var (
+	// for stats to prevent import cycle
+	mu sync.RWMutex
+	// StatsDeleted for counting the number of messages deleted
+	StatsDeleted float64
+)
+
+// Return a header field as a []*mail.Address, or "null" is not found/empty
+func addressToSlice(env *enmime.Envelope, key string) []*mail.Address {
+	data, err := env.AddressList(key)
+	if err != nil || data == nil {
+		return []*mail.Address{}
+	}
+
+	return data
+}
+
+// Generate the search text based on some header fields (to, from, subject etc)
+// and either the stripped HTML body (if exists) or text body
+func createSearchText(env *enmime.Envelope) string {
+	var b strings.Builder
+
+	b.WriteString(env.GetHeader("From") + " ")
+	b.WriteString(env.GetHeader("Subject") + " ")
+	b.WriteString(env.GetHeader("To") + " ")
+	b.WriteString(env.GetHeader("Cc") + " ")
+	b.WriteString(env.GetHeader("Bcc") + " ")
+	b.WriteString(env.GetHeader("Reply-To") + " ")
+	b.WriteString(env.GetHeader("Return-Path") + " ")
+
+	h := html2text.Strip(env.HTML, true)
+	if h != "" {
+		b.WriteString(h + " ")
+	} else {
+		b.WriteString(env.Text + " ")
+	}
+	// add attachment filenames
+	for _, a := range env.Attachments {
+		b.WriteString(a.FileName + " ")
+	}
+
+	d := cleanString(b.String())
+
+	return d
+}
+
+// CleanString removes unwanted characters from stored search text and search queries
+func cleanString(str string) string {
+	// replace \uFEFF with space, see https://github.com/golang/go/issues/42274#issuecomment-1017258184
+	str = strings.ReplaceAll(str, string('\uFEFF'), " ")
+
+	// remove/replace new lines
+	re := regexp.MustCompile(`(\r?\n|\t|>|<|"|\,|;|\(|\))`)
+	str = re.ReplaceAllString(str, " ")
+
+	// remove duplicate whitespace and trim
+	return strings.ToLower(strings.Join(strings.Fields(strings.TrimSpace(str)), " "))
+}
+
+// LogMessagesDeleted logs the number of messages deleted
+func logMessagesDeleted(n int) {
+	mu.Lock()
+	StatsDeleted = StatsDeleted + float64(n)
+	mu.Unlock()
+}
+
+// IsFile returns whether a path is a file
+func isFile(path string) bool {
+	info, err := os.Stat(path)
+	if os.IsNotExist(err) || !info.Mode().IsRegular() {
+		return false
+	}
+
+	return true
+}
+
+// Convert `%` to `%%` for SQL searches
+func escPercentChar(s string) string {
+	return strings.ReplaceAll(s, "%", "%%")
+}

internal/tools/argsparser.go

@@ -0,0 +1,32 @@
+package tools
+
+import "strings"
+
+// ArgsParser will split a string by new words and quotes phrases
+func ArgsParser(s string) []string {
+	args := []string{}
+	sb := &strings.Builder{}
+	quoted := false
+	for _, r := range s {
+		if r == '"' {
+			quoted = !quoted
+			sb.WriteRune(r) // keep '"' otherwise comment this line
+		} else if !quoted && r == ' ' {
+			v := strings.TrimSpace(strings.ReplaceAll(sb.String(), "\"", ""))
+			if v != "" {
+				args = append(args, v)
+			}
+			sb.Reset()
+		} else {
+			sb.WriteRune(r)
+		}
+	}
+	if sb.Len() > 0 {
+		v := strings.TrimSpace(strings.ReplaceAll(sb.String(), "\"", ""))
+		if v != "" {
+			args = append(args, v)
+		}
+	}
+
+	return args
+}

internal/tools/html.go

@@ -0,0 +1,19 @@
+package tools
+
+import (
+	"fmt"
+
+	"golang.org/x/net/html"
+)
+
+// GetHTMLAttributeVal returns the value of an HTML Attribute, else an error.
+// Returns a blank value if the attribute is set but empty.
+func GetHTMLAttributeVal(e *html.Node, key string) (string, error) {
+	for _, a := range e.Attr {
+		if a.Key == key {
+			return a.Val, nil
+		}
+	}
+
+	return "", fmt.Errorf("%s not found", key)
+}

internal/tools/listunsubscribeparser.go

@@ -0,0 +1,99 @@
+package tools
+
+import (
+	"fmt"
+	"net/url"
+	"regexp"
+	"strings"
+)
+
+// ListUnsubscribeParser will attempt to parse a `List-Unsubscribe` header and return
+// a slide of addresses (mail & URLs)
+func ListUnsubscribeParser(v string) ([]string, error) {
+	var results = []string{}
+	var re = regexp.MustCompile(`(?mU)<(.*)>`)
+	var reJoins = regexp.MustCompile(`(?imUs)>(.*)<`)
+	var reValidJoinChars = regexp.MustCompile(`(?imUs)^(\s+)?,(\s+)?$`)
+	var reWrapper = regexp.MustCompile(`(?imUs)^<(.*)>$`)
+	var reMailTo = regexp.MustCompile(`^mailto:[a-zA-Z0-9]`)
+	var reHTTP = regexp.MustCompile(`^(?i)https?://[a-zA-Z0-9]`)
+	var reSpaces = regexp.MustCompile(`\s`)
+	var reComments = regexp.MustCompile(`(?mUs)\(.*\)`)
+	var hasMailTo bool
+	var hasHTTP bool
+
+	v = strings.TrimSpace(v)
+
+	comments := reComments.FindAllStringSubmatch(v, -1)
+	for _, c := range comments {
+		// strip comments
+		v = strings.Replace(v, c[0], "", -1)
+		v = strings.TrimSpace(v)
+	}
+
+	if !re.MatchString(v) {
+		return results, fmt.Errorf("\"%s\" no valid unsubscribe links found", v)
+	}
+
+	errors := []string{}
+
+	if !reWrapper.MatchString(v) {
+		return results, fmt.Errorf("\"%s\" should be enclosed in <>", v)
+	}
+
+	matches := re.FindAllStringSubmatch(v, -1)
+
+	if len(matches) > 2 {
+		errors = append(errors, fmt.Sprintf("\"%s\" should include a maximum of one email and one HTTP link", v))
+	} else {
+		splits := reJoins.FindAllStringSubmatch(v, -1)
+		for _, g := range splits {
+			if !reValidJoinChars.MatchString(g[1]) {
+				return results, fmt.Errorf("\"%s\" <> should be split with a comma and optional spaces", v)
+			}
+		}
+
+		for _, m := range matches {
+			r := m[1]
+			if reSpaces.MatchString(r) {
+				errors = append(errors, fmt.Sprintf("\"%s\" should not contain spaces", r))
+				continue
+			}
+
+			if reMailTo.MatchString(r) {
+				if hasMailTo {
+					errors = append(errors, fmt.Sprintf("\"%s\" should only contain one mailto:", r))
+					continue
+				}
+
+				hasMailTo = true
+			} else if reHTTP.MatchString(r) {
+				if hasHTTP {
+					errors = append(errors, fmt.Sprintf("\"%s\" should only contain one HTTP link", r))
+					continue
+				}
+
+				hasHTTP = true
+
+			} else {
+				errors = append(errors, fmt.Sprintf("\"%s\" should start with either http(s):// or mailto:", r))
+				continue
+			}
+
+			_, err := url.ParseRequestURI(r)
+			if err != nil {
+				errors = append(errors, err.Error())
+				continue
+			}
+
+			results = append(results, r)
+		}
+	}
+
+	var err error
+	if len(errors) > 0 {
+		err = fmt.Errorf("%s", strings.Join(errors, ", "))
+	}
+
+	return results, err
+}

internal/tools/message.go

@@ -0,0 +1,99 @@
+// Package tools provides various methods for various things
+package tools
+
+import (
+	"bufio"
+	"bytes"
+	"net/mail"
+	"regexp"
+
+	"github.com/axllent/mailpit/internal/logger"
+)
+
+// RemoveMessageHeaders scans a message for headers, if found them removes them.
+// It will only remove a single instance of any given message header.
+func RemoveMessageHeaders(msg []byte, headers []string) ([]byte, error) {
+	reader := bytes.NewReader(msg)
+	m, err := mail.ReadMessage(reader)
+	if err != nil {
+		return nil, err
+	}
+
+	reBlank := regexp.MustCompile(`^\s+`)
+
+	for _, hdr := range headers {
+		// case-insensitive
+		reHdr := regexp.MustCompile(`(?i)^` + regexp.QuoteMeta(hdr+":"))
+
+		// header := []byte(hdr + ":")
+		if m.Header.Get(hdr) != "" {
+			scanner := bufio.NewScanner(bytes.NewReader(msg))
+			found := false
+			hdr := []byte("")
+			for scanner.Scan() {
+				line := scanner.Bytes()
+				if !found && reHdr.Match(line) {
+					// add the first line starting with <header>:
+					hdr = append(hdr, line...)
+					hdr = append(hdr, []byte("\r\n")...)
+					found = true
+				} else if found && reBlank.Match(line) {
+					// add any following lines starting with a whitespace (tab or space)
+					hdr = append(hdr, line...)
+					hdr = append(hdr, []byte("\r\n")...)
+				} else if found {
+					// stop scanning, we have the full <header>
+					break
+				}
+			}
+
+			if len(hdr) > 0 {
+				logger.Log().Debugf("[release] removed %s header", hdr)
+				msg = bytes.Replace(msg, hdr, []byte(""), 1)
+			}
+		}
+	}
+
+	return msg, nil
+}
+
+// UpdateMessageHeader scans a message for a header and updates its value if found.
+func UpdateMessageHeader(msg []byte, header, value string) ([]byte, error) {
+	reader := bytes.NewReader(msg)
+	m, err := mail.ReadMessage(reader)
+	if err != nil {
+		return nil, err
+	}
+
+	if m.Header.Get(header) != "" {
+		reBlank := regexp.MustCompile(`^\s+`)
+		reHdr := regexp.MustCompile(`(?i)^` + regexp.QuoteMeta(header+":"))
+
+		scanner := bufio.NewScanner(bytes.NewReader(msg))
+		found := false
+		hdr := []byte("")
+		for scanner.Scan() {
+			line := scanner.Bytes()
+			if !found && reHdr.Match(line) {
+				// add the first line starting with <header>:
+				hdr = append(hdr, line...)
+				hdr = append(hdr, []byte("\r\n")...)
+				found = true
+			} else if found && reBlank.Match(line) {
+				// add any following lines starting with a whitespace (tab or space)
+				hdr = append(hdr, line...)
+				hdr = append(hdr, []byte("\r\n")...)
+			} else if found {
+				// stop scanning, we have the full <header>
+				break
+			}
+		}
+
+		if len(hdr) > 0 {
+			logger.Log().Debugf("[release] replaced %s header", hdr)
+			msg = bytes.Replace(msg, hdr, []byte(header+": "+value+"\r\n"), 1)
+		}
+	}
+
+	return msg, nil
+}

internal/tools/snippets.go

@@ -0,0 +1,44 @@
+package tools
+
+import (
+	"regexp"
+	"strings"
+
+	"github.com/axllent/mailpit/internal/html2text"
+)
+
+// CreateSnippet returns a message snippet. It will use the HTML version (if it exists)
+// otherwise the text version.
+func CreateSnippet(text, html string) string {
+	text = strings.TrimSpace(text)
+	html = strings.TrimSpace(html)
+	limit := 200
+	spaceRe := regexp.MustCompile(`\s+`)
+
+	if text == "" && html == "" {
+		return ""
+	}
+
+	if html != "" {
+		data := html2text.Strip(html, false)
+
+		if len(data) <= limit {
+			return data
+		}
+
+		return data[0:limit] + "..."
+	}
+
+	if text != "" {
+		// replace \uFEFF with space, see https://github.com/golang/go/issues/42274#issuecomment-1017258184
+		text = strings.ReplaceAll(text, string('\uFEFF'), " ")
+		text = strings.TrimSpace(spaceRe.ReplaceAllString(text, " "))
+		if len(text) <= limit {
+			return text
+		}
+
+		return text[0:limit] + "..."
+	}
+
+	return ""
+}

internal/tools/tags.go

@@ -0,0 +1,47 @@
+package tools
+
+import (
+	"regexp"
+	"strings"
+
+	"golang.org/x/text/cases"
+	"golang.org/x/text/language"
+)
+
+var (
+	// Invalid tag characters regex
+	tagsInvalidChars = regexp.MustCompile(`[^a-zA-Z0-9\-\ \_\.]`)
+
+	// Regex to catch multiple spaces
+	multiSpaceRe = regexp.MustCompile(`(\s+)`)
+
+	// TagsTitleCase enforces TitleCase on all tags
+	TagsTitleCase bool
+)
+
+// CleanTag returns a clean tag, trimming whitespace and replacing invalid characters
+func CleanTag(s string) string {
+	return strings.TrimSpace(
+		multiSpaceRe.ReplaceAllString(
+			tagsInvalidChars.ReplaceAllString(s, " "),
+			" ",
+		),
+	)
+}
+
+// SetTagCasing returns the slice of tags, title-casing if set
+func SetTagCasing(s []string) []string {
+	if !TagsTitleCase {
+		return s
+	}
+
+	titleTags := []string{}
+
+	c := cases.Title(language.Und, cases.NoLower)
+
+	for _, t := range s {
+		titleTags = append(titleTags, c.String(t))
+	}
+
+	return titleTags
+}

internal/tools/tools_test.go

@@ -0,0 +1,119 @@
+package tools
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestArgsParser(t *testing.T) {
+	tests := map[string][]string{}
+	tests["this is a test"] = []string{"this", "is", "a", "test"}
+	tests["\"this is\" a test"] = []string{"this is", "a", "test"}
+	tests["!\"this is\" a test"] = []string{"!this is", "a", "test"}
+	tests["subject:this is a test"] = []string{"subject:this", "is", "a", "test"}
+	tests["subject:\"this is\" a test"] = []string{"subject:this is", "a", "test"}
+	tests["subject:\"this is\" \"a test\""] = []string{"subject:this is", "a test"}
+	tests["subject:\"this 'is\" \"a test\""] = []string{"subject:this 'is", "a test"}
+	tests["subject:\"this 'is a test"] = []string{"subject:this 'is a test"}
+	tests["\"this is a test\"=\"this is a test\""] = []string{"this is a test=this is a test"}
+
+	for search, expected := range tests {
+		res := ArgsParser(search)
+		if !reflect.DeepEqual(res, expected) {
+			t.Log("Args parser error:", res, "!=", expected)
+			t.Fail()
+		}
+	}
+}
+
+func TestCleanTag(t *testing.T) {
+	tests := map[string]string{}
+	tests["this is a test"] = "this is a test"
+	tests["thiS IS a Test"] = "thiS IS a Test"
+	tests["thiS IS a Test :-)"] = "thiS IS a Test -"
+	tests["  thiS 99     IS a Test :-)"] = "thiS 99 IS a Test -"
+	tests["this_is-a test "] = "this_is-a test"
+	tests["this_is-a&^%%(*)@ test"] = "this_is-a test"
+
+	for search, expected := range tests {
+		res := CleanTag(search)
+		if res != expected {
+			t.Log("CleanTags error:", res, "!=", expected)
+			t.Fail()
+		}
+	}
+}
+
+func TestSnippets(t *testing.T) {
+	tests := map[string]string{}
+	tests["this is a  test"] = "this is a test"
+	tests["thiS IS a Test"] = "thiS IS a Test"
+	tests["thiS IS a Test :-)"] = "thiS IS a Test :-)"
+	tests["<h1>This is a test.</h1> "] = "This is a test."
+	tests["this_is-a     test "] = "this_is-a test"
+	tests["this_is-a&^%%(*)@ test"] = "this_is-a&^%%(*)@ test"
+	tests["<h1>Heading</h1><p>Paragraph</p>"] = "Heading Paragraph"
+	tests[`<h1>Heading</h1>
+		<p>Paragraph</p>`] = "Heading Paragraph"
+	tests[`<h1>Heading</h1><p>   <a href="https://github.com">linked text</a></p>`] = "Heading linked text"
+	// broken html
+	tests[`<h1>Heading</h3><p>   <a href="https://github.com">linked text.`] = "Heading linked text."
+	// truncation to 200 chars + ...
+	tests["abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789"] = "abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmnopqrstuvwxyx0123456789 abcdefghijklmno..."
+
+	for str, expected := range tests {
+		res := CreateSnippet(str, str)
+		if res != expected {
+			t.Log("CreateSnippet error:", res, "!=", expected)
+			t.Fail()
+		}
+	}
+}
+
+func TestListUnsubscribeParser(t *testing.T) {
+	tests := map[string]bool{}
+
+	// should pass
+	tests["<mailto:unsubscribe@example.com>"] = true
+	tests["<https://example.com>"] = true
+	tests["<HTTPS://EXAMPLE.COM>"] = true
+	tests["<mailto:unsubscribe@example.com>, <http://example.com>"] = true
+	tests["<mailto:unsubscribe@example.com>, <https://example.com>"] = true
+	tests["<https://example.com>, <mailto:unsubscribe@example.com>"] = true
+	tests["<https://example.com> , 		<mailto:unsubscribe@example.com>"] = true
+	tests["<https://example.com> ,<mailto:unsubscribe@example.com>"] = true
+	tests["<mailto:unsubscribe@example.com>,<https://example.com>"] = true
+	tests[`<https://example.com> ,
+		 <mailto:unsubscribe@example.com>`] = true
+	tests["<mailto:unsubscribe@example.com?subject=unsubscribe%20me>"] = true
+	tests["(Use this command to get off the list) <mailto:unsubscribe@example.com?subject=unsubscribe%20me>"] = true
+	tests["<mailto:unsubscribe@example.com> (Use this command to get off the list)"] = true
+	tests["(Use this command to get off the list) <mailto:unsubscribe@example.com>, (Click this link to unsubscribe) <http://example.com>"] = true
+
+	// should fail
+	tests["mailto:unsubscribe@example.com"] = false                                                // no <>
+	tests["<mailto::unsubscribe@example.com>"] = false                                             // ::
+	tests["https://example.com/"] = false                                                          // no <>
+	tests["mailto:unsubscribe@example.com, <https://example.com/>"] = false                        // no <>
+	tests["<MAILTO:unsubscribe@example.com>"] = false                                              // capitals
+	tests["<mailto:unsubscribe@example.com>, <mailto:test2@example.com>"] = false                  // two emails
+	tests["<http://exampl\\e2.com>, <http://example2.com>"] = false                                // two links
+	tests["<http://example.com>, <mailto:unsubscribe@example.com>, <http://example2.com>"] = false // two links
+	tests["<mailto:unsubscribe@example.com>, <example.com>"] = false                               // no mailto || http(s)
+	tests["<mailto: unsubscribe@example.com>, <unsubscribe@lol.com>"] = false                      // space
+	tests["<mailto:unsubscribe@example.com?subject=unsubscribe me>"] = false                       // space
+	tests["<http:///example.com>"] = false                                                         // http:///
+
+	for search, expected := range tests {
+		_, err := ListUnsubscribeParser(search)
+		hasError := err != nil
+		if expected == hasError {
+			if err != nil {
+				t.Logf("ListUnsubscribeParser: %v", err)
+			} else {
+				t.Logf("ListUnsubscribeParser: \"%s\" expected: %v", search, expected)
+			}
+			t.Fail()
+		}
+	}
+}

internal/tools/utils.go

@@ -0,0 +1,26 @@
+package tools
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Plural returns a singular or plural of a word together with the total
+func Plural(total int, singular, plural string) string {
+	if total == 1 {
+		return fmt.Sprintf("%d %s", total, singular)
+	}
+	return fmt.Sprintf("%d %s", total, plural)
+}
+
+// InArray tests if a string is within an array. It is not case sensitive.
+func InArray(k string, arr []string) bool {
+	k = strings.ToLower(k)
+	for _, v := range arr {
+		if strings.ToLower(v) == k {
+			return true
+		}
+	}
+
+	return false
+}

internal/updater/targz.go

@@ -98,53 +98,6 @@ func makeAbsolute(inputFilePath, outputFilePath string) (string, string, error)
 	return inputFilePath, outputFilePath, err
 }
 
-// Write path without the prefix in subPath to tar writer.
-func writeTarGz(path string, tarWriter *tar.Writer, fileInfo os.FileInfo, subPath string) error {
-	file, err := os.Open(filepath.Clean(path))
-	if err != nil {
-		return err
-	}
-
-	defer func() {
-		if err := file.Close(); err != nil {
-			fmt.Printf("Error closing file: %s\n", err)
-		}
-	}()
-
-	evaledPath, err := filepath.EvalSymlinks(path)
-	if err != nil {
-		return err
-	}
-
-	subPath, err = filepath.EvalSymlinks(subPath)
-	if err != nil {
-		return err
-	}
-
-	link := ""
-	if evaledPath != path {
-		link = evaledPath
-	}
-
-	header, err := tar.FileInfoHeader(fileInfo, link)
-	if err != nil {
-		return err
-	}
-	header.Name = evaledPath[len(subPath):]
-
-	err = tarWriter.WriteHeader(header)
-	if err != nil {
-		return err
-	}
-
-	_, err = io.Copy(tarWriter, file)
-	if err != nil {
-		return err
-	}
-
-	return err
-}
-
 // Extract the file in filePath to directory.
 func extract(filePath string, directory string) error {
 	file, err := os.Open(filepath.Clean(filePath))
@@ -200,7 +153,7 @@ func extract(filePath string, directory string) error {
 
 			// set file ownership (if allowed)
 			// Chtimes() && Chmod() only set after once extraction is complete
-			os.Chown(filename, header.Uid, header.Gid) // #nosec
+			_ = os.Chown(filename, header.Uid, header.Gid)
 
 			// add directory info to slice to process afterwards
 			postExtraction = append(postExtraction, DirInfo{filename, header})
@@ -249,15 +202,15 @@ func extract(filePath string, directory string) error {
 		}
 
 		// set file permissions, timestamps & uid/gid
-		os.Chmod(filename, os.FileMode(header.Mode))            // #nosec
-		os.Chtimes(filename, header.AccessTime, header.ModTime) // #nosec
-		os.Chown(filename, header.Uid, header.Gid)              // #nosec
+		_ = os.Chmod(filename, os.FileMode(header.Mode))
+		_ = os.Chtimes(filename, header.AccessTime, header.ModTime)
+		_ = os.Chown(filename, header.Uid, header.Gid)
 	}
 
 	if len(postExtraction) > 0 {
 		for _, dir := range postExtraction {
-			os.Chtimes(dir.Path, dir.Header.AccessTime, dir.Header.ModTime) // #nosec
-			os.Chmod(dir.Path, dir.Header.FileInfo().Mode().Perm())         // #nosec
+			_ = os.Chtimes(dir.Path, dir.Header.AccessTime, dir.Header.ModTime)
+			_ = os.Chmod(dir.Path, dir.Header.FileInfo().Mode().Perm())
 		}
 	}
 

internal/updater/updater.go

@@ -1,3 +1,4 @@
+// package Updater checks and downloads new versions
 package updater
 
 import (
@@ -6,14 +7,15 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"runtime"
+	"time"
 
-	"github.com/axllent/mailpit/utils/logger"
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
 	"github.com/axllent/semver"
 )
 
@@ -49,13 +51,27 @@ type Release struct {
 func GithubLatest(repo, name string) (string, string, string, error) {
 	releaseURL := fmt.Sprintf("https://api.github.com/repos/%s/releases", repo)
 
-	resp, err := http.Get(releaseURL) // #nosec
+	timeout := time.Duration(5 * time.Second)
+
+	client := http.Client{
+		Timeout: timeout,
+	}
+
+	req, err := http.NewRequest("GET", releaseURL, nil)
 	if err != nil {
 		return "", "", "", err
 	}
+
+	req.Header.Set("User-Agent", "Mailpit/"+config.Version)
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", "", "", err
+	}
+
 	defer resp.Body.Close()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 
 	if err != nil {
 		return "", "", "", err
@@ -162,8 +178,8 @@ func GithubUpdate(repo, appName, currentVersion string) (string, error) {
 	}
 
 	if runtime.GOOS != "windows" {
-		/* #nosec G302 */
-		if err := os.Chmod(newExec, 0755); err != nil {
+		err := os.Chmod(newExec, 0755) // #nosec
+		if err != nil {
 			return "", err
 		}
 	}
@@ -205,7 +221,7 @@ func downloadToFile(url, fileName string) error {
 
 	defer func() {
 		if err := out.Close(); err != nil {
-			logger.Log().Errorf("Error closing file: %s\n", err)
+			logger.Log().Errorf("error closing file: %s", err.Error())
 		}
 	}()
 
@@ -289,11 +305,7 @@ func replaceFile(dst, src string) error {
 	}
 
 	// remove the src file
-	if err := os.Remove(src); err != nil {
-		return err
-	}
-
-	return nil
+	return os.Remove(src)
 }
 
 // GetTempDir will create & return a temporary directory if one has not been specified
@@ -307,7 +319,7 @@ func getTempDir() string {
 	}
 	if err := mkDirIfNotExists(tempDir); err != nil {
 		// need a better way to exit
-		logger.Log().Errorf("Error: %v", err)
+		logger.Log().Errorf("error: %s", err.Error())
 		os.Exit(2)
 	}
 
@@ -323,16 +335,6 @@ func mkDirIfNotExists(path string) error {
 	return nil
 }
 
-// IsFile returns if a path is a file
-func isFile(path string) bool {
-	info, err := os.Stat(path)
-	if os.IsNotExist(err) || !info.Mode().IsRegular() {
-		return false
-	}
-
-	return true
-}
-
 // IsDir returns if a path is a directory
 func isDir(path string) bool {
 	info, err := os.Stat(path)

package.json

@@ -3,27 +3,34 @@
   "version": "0.0.0",
   "private": true,
   "scripts": {
-    "build": "node esbuild.config.mjs",
+    "build": "MINIFY=true node esbuild.config.mjs",
     "watch": "WATCH=true node esbuild.config.mjs",
-    "package": "MINIFY=true node esbuild.config.mjs"
+    "package": "MINIFY=true node esbuild.config.mjs",
+    "update-caniemail": "wget -O utils/html-check/caniemail-data.json https://www.caniemail.com/api/data.json"
   },
   "dependencies": {
     "axios": "^1.2.1",
     "bootstrap": "^5.2.0",
     "bootstrap-icons": "^1.9.1",
-    "bootstrap5-tags": "^1.4.41",
+    "bootstrap5-tags": "^1.6.1",
     "color-hash": "^2.0.2",
-    "moment": "^2.29.4",
+    "dayjs": "^1.11.10",
+    "ical.js": "^2.0.1",
+    "modern-screenshot": "^4.4.30",
     "prismjs": "^1.29.0",
     "rapidoc": "^9.3.4",
-    "tinycon": "^0.6.8",
-    "vue": "^3.2.13"
+    "timezones-list": "^3.0.3",
+    "vue": "^3.2.13",
+    "vue-css-donut-chart": "^2.0.0",
+    "vue-router": "^4.2.4"
   },
   "devDependencies": {
     "@popperjs/core": "^2.11.5",
+    "@types/bootstrap": "^5.2.7",
+    "@types/tinycon": "^0.6.3",
     "@vue/compiler-sfc": "^3.2.37",
-    "esbuild": "^0.17.5",
+    "esbuild": "^0.21.3",
     "esbuild-plugin-vue-next": "^0.1.4",
-    "esbuild-sass-plugin": "^2.3.2"
+    "esbuild-sass-plugin": "^3.0.0"
   }
 }

sendmail/cmd/cmd.go

@@ -16,15 +16,16 @@ package cmd
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/mail"
 	"net/smtp"
 	"os"
 	"os/user"
+	"regexp"
 	"strings"
 
 	"github.com/axllent/mailpit/config"
-	"github.com/axllent/mailpit/utils/logger"
+	"github.com/axllent/mailpit/internal/logger"
 	"github.com/reiver/go-telnet"
 	flag "github.com/spf13/pflag"
 )
@@ -42,15 +43,19 @@ var (
 )
 
 func init() {
+	// ensure only valid characters are used, ie: windows
+	re := regexp.MustCompile(`[^a-zA-Z\-\.\_]`)
 	host, err := os.Hostname()
 	if err != nil {
 		host = "localhost"
+	} else {
+		host = re.ReplaceAllString(host, "-")
 	}
 
 	username := "nobody"
 	user, err := user.Current()
 	if err == nil && user != nil && len(user.Username) > 0 {
-		username = user.Username
+		username = re.ReplaceAllString(user.Username, "-")
 	}
 
 	if FromAddr == "" {
@@ -62,7 +67,7 @@ func init() {
 func Run() {
 	var recipients []string
 
-	// defaults from envars if provided
+	// defaults from env vars if provided
 	if len(os.Getenv("MP_SENDMAIL_SMTP_ADDR")) > 0 {
 		SMTPAddr = os.Getenv("MP_SENDMAIL_SMTP_ADDR")
 	}
@@ -93,6 +98,11 @@ func Run() {
 	// allow recipients to be passed as an argument
 	recipients = flag.Args()
 
+	// if run via `mailpit sendmail ...` then remove `sendmail` from "recipients"
+	if len(recipients) > 0 && recipients[0] == "sendmail" {
+		recipients = recipients[1:]
+	}
+
 	if showHelp {
 		flag.Usage()
 		os.Exit(0)
@@ -117,7 +127,7 @@ func Run() {
 		return
 	}
 
-	body, err := ioutil.ReadAll(os.Stdin)
+	body, err := io.ReadAll(os.Stdin)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "error reading stdin")
 		os.Exit(11)
@@ -125,7 +135,7 @@ func Run() {
 
 	msg, err := mail.ReadMessage(bytes.NewReader(body))
 	if err != nil {
-		fmt.Fprintln(os.Stderr, fmt.Sprintf("error parsing message body: %s", err))
+		fmt.Fprintf(os.Stderr, "error parsing message body: %si\n", err)
 		os.Exit(11)
 	}
 
@@ -152,7 +162,13 @@ func Run() {
 		}
 	}
 
-	err = smtp.SendMail(SMTPAddr, nil, FromAddr, addresses, body)
+	from, err := mail.ParseAddress(FromAddr)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "invalid from address")
+		os.Exit(11)
+	}
+
+	err = smtp.SendMail(SMTPAddr, nil, from.Address, addresses, body)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "error sending mail")
 		logger.Log().Fatal(err)

server/apiv1/api.go

@@ -1,3 +1,4 @@
+// Package apiv1 handles all the API responses
 package apiv1
 
 import (
@@ -8,14 +9,18 @@ import (
 	"net/mail"
 	"strconv"
 	"strings"
+	"time"
 
 	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/htmlcheck"
+	"github.com/axllent/mailpit/internal/linkcheck"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/spamassassin"
+	"github.com/axllent/mailpit/internal/storage"
+	"github.com/axllent/mailpit/internal/tools"
 	"github.com/axllent/mailpit/server/smtpd"
-	"github.com/axllent/mailpit/storage"
-	"github.com/axllent/mailpit/utils/logger"
-	"github.com/axllent/mailpit/utils/tools"
 	"github.com/gorilla/mux"
-	uuid "github.com/satori/go.uuid"
+	"github.com/lithammer/shortuuid/v4"
 )
 
 // GetMessages returns a paginated list of messages as JSON
@@ -62,14 +67,16 @@ func GetMessages(w http.ResponseWriter, r *http.Request) {
 
 	res.Start = start
 	res.Messages = messages
-	res.Count = len(messages)
+	res.Count = float64(len(messages)) // legacy - now undocumented in API specs
 	res.Total = stats.Total
 	res.Unread = stats.Unread
 	res.Tags = stats.Tags
+	res.MessagesCount = stats.Total
 
-	bytes, _ := json.Marshal(res)
 	w.Header().Add("Content-Type", "application/json")
-	_, _ = w.Write(bytes)
+	if err := json.NewEncoder(w).Encode(res); err != nil {
+		httpError(w, err.Error())
+	}
 }
 
 // Search returns the latest messages as JSON
@@ -78,7 +85,7 @@ func Search(w http.ResponseWriter, r *http.Request) {
 	//
 	// # Search messages
 	//
-	// Returns the latest messages matching a search.
+	// Returns messages matching [a search](https://mailpit.axllent.org/docs/usage/search-filters/), sorted by received date (descending).
 	//
 	//	Produces:
 	//	- application/json
@@ -91,12 +98,23 @@ func Search(w http.ResponseWriter, r *http.Request) {
 	//	    description: Search query
 	//	    required: true
 	//	    type: string
+	//	  + name: start
+	//	    in: query
+	//	    description: Pagination offset
+	//	    required: false
+	//	    type: integer
+	//	    default: 0
 	//	  + name: limit
 	//	    in: query
 	//	    description: Limit results
 	//	    required: false
 	//	    type: integer
 	//	    default: 50
+	//	  + name: tz
+	//	    in: query
+	//	    description: [Timezone identifier](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones) used specifically for `before:` & `after:` searches (eg: "Pacific/Auckland").
+	//	    required: false
+	//	    type: string
 	//
 	//	Responses:
 	//		200: MessagesSummaryResponse
@@ -109,7 +127,7 @@ func Search(w http.ResponseWriter, r *http.Request) {
 
 	start, limit := getStartLimit(r)
 
-	messages, err := storage.Search(search, start, limit)
+	messages, results, err := storage.Search(search, r.URL.Query().Get("tz"), start, limit)
 	if err != nil {
 		httpError(w, err.Error())
 		return
@@ -121,14 +139,59 @@ func Search(w http.ResponseWriter, r *http.Request) {
 
 	res.Start = start
 	res.Messages = messages
-	res.Count = len(messages)
-	res.Total = stats.Total
+	res.Count = float64(len(messages)) // legacy - now undocumented in API specs
+	res.Total = stats.Total            // total messages in mailbox
+	res.MessagesCount = float64(results)
 	res.Unread = stats.Unread
 	res.Tags = stats.Tags
 
-	bytes, _ := json.Marshal(res)
 	w.Header().Add("Content-Type", "application/json")
-	_, _ = w.Write(bytes)
+	if err := json.NewEncoder(w).Encode(res); err != nil {
+		httpError(w, err.Error())
+	}
+}
+
+// DeleteSearch will delete all messages matching a search
+func DeleteSearch(w http.ResponseWriter, r *http.Request) {
+	// swagger:route DELETE /api/v1/search messages DeleteSearch
+	//
+	// # Delete messages by search
+	//
+	// Delete all messages matching [a search](https://mailpit.axllent.org/docs/usage/search-filters/).
+	//
+	//	Produces:
+	//	- application/json
+	//
+	//	Schemes: http, https
+	//
+	//	Parameters:
+	//	  + name: query
+	//	    in: query
+	//	    description: Search query
+	//	    required: true
+	//	    type: string
+	//	  + name: tz
+	//	    in: query
+	//	    description: [Timezone identifier](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones) used specifically for `before:` & `after:` searches (eg: "Pacific/Auckland").
+	//	    required: false
+	//	    type: string
+	//
+	//	Responses:
+	//		200: OKResponse
+	//		default: ErrorResponse
+	search := strings.TrimSpace(r.URL.Query().Get("query"))
+	if search == "" {
+		httpError(w, "Error: no search query")
+		return
+	}
+
+	if err := storage.DeleteSearch(search, r.URL.Query().Get("tz")); err != nil {
+		httpError(w, err.Error())
+		return
+	}
+
+	w.Header().Add("Content-Type", "text/plain")
+	_, _ = w.Write([]byte("ok"))
 }
 
 // GetMessage (method: GET) returns the Message as JSON
@@ -139,6 +202,8 @@ func GetMessage(w http.ResponseWriter, r *http.Request) {
 	//
 	// Returns the summary of a message, marking the message as read.
 	//
+	// The ID can be set to `latest` to return the latest message.
+	//
 	//	Produces:
 	//	- application/json
 	//
@@ -147,7 +212,7 @@ func GetMessage(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ID
 	//	    in: path
-	//	    description: Database ID
+	//	    description: Message database ID or "latest"
 	//	    required: true
 	//	    type: string
 	//
@@ -159,15 +224,26 @@ func GetMessage(w http.ResponseWriter, r *http.Request) {
 
 	id := vars["id"]
 
+	if id == "latest" {
+		var err error
+		id, err = storage.LatestID(r)
+		if err != nil {
+			w.WriteHeader(404)
+			fmt.Fprint(w, err.Error())
+			return
+		}
+	}
+
 	msg, err := storage.GetMessage(id)
 	if err != nil {
 		fourOFour(w)
 		return
 	}
 
-	bytes, _ := json.Marshal(msg)
 	w.Header().Add("Content-Type", "application/json")
-	_, _ = w.Write(bytes)
+	if err := json.NewEncoder(w).Encode(msg); err != nil {
+		httpError(w, err.Error())
+	}
 }
 
 // DownloadAttachment (method: GET) returns the attachment data
@@ -188,7 +264,7 @@ func DownloadAttachment(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ID
 	//	    in: path
-	//	    description: Database ID
+	//	    description: Message database ID
 	//	    required: true
 	//	    type: string
 	//	  + name: PartID
@@ -229,6 +305,8 @@ func GetHeaders(w http.ResponseWriter, r *http.Request) {
 	//
 	// Returns the message headers as an array.
 	//
+	// The ID can be set to `latest` to return the latest message headers.
+	//
 	//	Produces:
 	//	- application/json
 	//
@@ -237,7 +315,7 @@ func GetHeaders(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ID
 	//	    in: path
-	//	    description: Database ID
+	//	    description: Message database ID or "latest"
 	//	    required: true
 	//	    type: string
 	//
@@ -249,6 +327,16 @@ func GetHeaders(w http.ResponseWriter, r *http.Request) {
 
 	id := vars["id"]
 
+	if id == "latest" {
+		var err error
+		id, err = storage.LatestID(r)
+		if err != nil {
+			w.WriteHeader(404)
+			fmt.Fprint(w, err.Error())
+			return
+		}
+	}
+
 	data, err := storage.GetMessageRaw(id)
 	if err != nil {
 		fourOFour(w)
@@ -262,10 +350,10 @@ func GetHeaders(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	bytes, _ := json.Marshal(m.Header)
-
 	w.Header().Add("Content-Type", "application/json")
-	_, _ = w.Write(bytes)
+	if err := json.NewEncoder(w).Encode(m.Header); err != nil {
+		httpError(w, err.Error())
+	}
 }
 
 // DownloadRaw (method: GET) returns the full email source as plain text
@@ -276,6 +364,8 @@ func DownloadRaw(w http.ResponseWriter, r *http.Request) {
 	//
 	// Returns the full email source as plain text.
 	//
+	// The ID can be set to `latest` to return the latest message source.
+	//
 	//	Produces:
 	//	- text/plain
 	//
@@ -284,7 +374,7 @@ func DownloadRaw(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ID
 	//	    in: path
-	//	    description: Database ID
+	//	    description: Message database ID or "latest"
 	//	    required: true
 	//	    type: string
 	//
@@ -295,16 +385,25 @@ func DownloadRaw(w http.ResponseWriter, r *http.Request) {
 	vars := mux.Vars(r)
 
 	id := vars["id"]
-
 	dl := r.FormValue("dl")
 
+	if id == "latest" {
+		var err error
+		id, err = storage.LatestID(r)
+		if err != nil {
+			w.WriteHeader(404)
+			fmt.Fprint(w, err.Error())
+			return
+		}
+	}
+
 	data, err := storage.GetMessageRaw(id)
 	if err != nil {
 		fourOFour(w)
 		return
 	}
 
-	w.Header().Set("Content-Type", "text/plain")
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
 	if dl == "1" {
 		w.Header().Set("Content-Disposition", "attachment; filename=\""+id+".eml\"")
 	}
@@ -313,11 +412,11 @@ func DownloadRaw(w http.ResponseWriter, r *http.Request) {
 
 // DeleteMessages (method: DELETE) deletes all messages matching IDS.
 func DeleteMessages(w http.ResponseWriter, r *http.Request) {
-	// swagger:route DELETE /api/v1/messages messages Delete
+	// swagger:route DELETE /api/v1/messages messages DeleteMessages
 	//
 	// # Delete messages
 	//
-	// If no IDs are provided then all messages are deleted.
+	// Delete individual or all messages. If no IDs are provided then all messages are deleted.
 	//
 	//	Consumes:
 	//	- application/json
@@ -327,13 +426,6 @@ func DeleteMessages(w http.ResponseWriter, r *http.Request) {
 	//
 	//	Schemes: http, https
 	//
-	//	Parameters:
-	//	  + name: ids
-	//	    in: body
-	//	    description: Database IDs to delete
-	//	    required: false
-	//	    type: DeleteRequest
-	//
 	//	Responses:
 	//		200: OKResponse
 	//		default: ErrorResponse
@@ -349,15 +441,13 @@ func DeleteMessages(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 	} else {
-		for _, id := range data.IDs {
-			if err := storage.DeleteOneMessage(id); err != nil {
-				httpError(w, err.Error())
-				return
-			}
+		if err := storage.DeleteMessages(data.IDs); err != nil {
+			httpError(w, err.Error())
+			return
 		}
 	}
 
-	w.Header().Add("Content-Type", "text/plain")
+	w.Header().Add("Content-Type", "application/plain")
 	_, _ = w.Write([]byte("ok"))
 }
 
@@ -378,13 +468,6 @@ func SetReadStatus(w http.ResponseWriter, r *http.Request) {
 	//
 	//	Schemes: http, https
 	//
-	//	Parameters:
-	//	  + name: ids
-	//	    in: body
-	//	    description: Database IDs to update
-	//	    required: false
-	//	    type: SetReadStatusRequest
-	//
 	//	Responses:
 	//		200: OKResponse
 	//		default: ErrorResponse
@@ -440,13 +523,36 @@ func SetReadStatus(w http.ResponseWriter, r *http.Request) {
 	_, _ = w.Write([]byte("ok"))
 }
 
-// SetTags (method: PUT) will set the tags for all provided IDs
-func SetTags(w http.ResponseWriter, r *http.Request) {
+// GetAllTags (method: GET) will get all tags currently in use
+func GetAllTags(w http.ResponseWriter, _ *http.Request) {
+	// swagger:route GET /api/v1/tags tags GetAllTags
+	//
+	// # Get all current tags
+	//
+	// Returns a JSON array of all unique message tags.
+	//
+	//	Produces:
+	//	- application/json
+	//
+	//	Schemes: http, https
+	//
+	//	Responses:
+	//		200: ArrayResponse
+	//		default: ErrorResponse
+
+	w.Header().Add("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(storage.GetAllTags()); err != nil {
+		httpError(w, err.Error())
+	}
+}
+
+// SetMessageTags (method: PUT) will set the tags for all provided IDs
+func SetMessageTags(w http.ResponseWriter, r *http.Request) {
 	// swagger:route PUT /api/v1/tags tags SetTags
 	//
 	// # Set message tags
 	//
-	// To remove all tags from a message, pass an empty tags array.
+	// This will overwrite any existing tags for selected message database IDs. To remove all tags from a message, pass an empty tags array.
 	//
 	//	Consumes:
 	//	- application/json
@@ -456,13 +562,6 @@ func SetTags(w http.ResponseWriter, r *http.Request) {
 	//
 	//	Schemes: http, https
 	//
-	//	Parameters:
-	//	  + name: ids
-	//	    in: body
-	//	    description: Database IDs to update
-	//	    required: true
-	//	    type: SetTagsRequest
-	//
 	//	Responses:
 	//		200: OKResponse
 	//		default: ErrorResponse
@@ -484,7 +583,7 @@ func SetTags(w http.ResponseWriter, r *http.Request) {
 
 	if len(ids) > 0 {
 		for _, id := range ids {
-			if err := storage.SetTags(id, data.Tags); err != nil {
+			if err := storage.SetMessageTags(id, data.Tags); err != nil {
 				httpError(w, err.Error())
 				return
 			}
@@ -495,14 +594,13 @@ func SetTags(w http.ResponseWriter, r *http.Request) {
 	_, _ = w.Write([]byte("ok"))
 }
 
-// ReleaseMessage (method: POST) will release a message via a preconfigured external SMTP server.
-// If no IDs are provided then all messages are updated.
+// ReleaseMessage (method: POST) will release a message via a pre-configured external SMTP server.
 func ReleaseMessage(w http.ResponseWriter, r *http.Request) {
-	// swagger:route POST /api/v1/message/{ID}/release message Release
+	// swagger:route POST /api/v1/message/{ID}/release message ReleaseMessage
 	//
 	// # Release message
 	//
-	// Release a message via a pre-configured external SMTP server..
+	// Release a message via a pre-configured external SMTP server. This is only enabled if message relaying has been configured.
 	//
 	//	Consumes:
 	//	- application/json
@@ -512,18 +610,6 @@ func ReleaseMessage(w http.ResponseWriter, r *http.Request) {
 	//
 	//	Schemes: http, https
 	//
-	//	Parameters:
-	//	  + name: ID
-	//	    in: path
-	//	    description: Database ID
-	//	    required: true
-	//	    type: string
-	//		+ name: to
-	//	    in: body
-	//	    description: Array of email addresses to release message to
-	//	    required: true
-	//	    type: ReleaseMessageRequest
-	//
 	//	Responses:
 	//		200: OKResponse
 	//		default: ErrorResponse
@@ -540,20 +626,14 @@ func ReleaseMessage(w http.ResponseWriter, r *http.Request) {
 
 	decoder := json.NewDecoder(r.Body)
 
-	data := releaseMessageRequest{}
+	data := releaseMessageRequestBody{}
 
 	if err := decoder.Decode(&data); err != nil {
 		httpError(w, err.Error())
 		return
 	}
 
-	tos := data.To
-	if len(tos) == 0 {
-		httpError(w, "No valid addresses found")
-		return
-	}
-
-	for _, to := range tos {
+	for _, to := range data.To {
 		address, err := mail.ParseAddress(to)
 
 		if err != nil {
@@ -561,12 +641,17 @@ func ReleaseMessage(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 
-		if config.SMTPRelayConfig.RecipientAllowlistRegexp != nil && !config.SMTPRelayConfig.RecipientAllowlistRegexp.MatchString(address.Address) {
+		if config.SMTPRelayConfig.AllowedRecipientsRegexp != nil && !config.SMTPRelayConfig.AllowedRecipientsRegexp.MatchString(address.Address) {
 			httpError(w, "Mail address does not match allowlist: "+to)
 			return
 		}
 	}
 
+	if len(data.To) == 0 {
+		httpError(w, "No valid addresses found")
+		return
+	}
+
 	reader := bytes.NewReader(msg)
 	m, err := mail.ReadMessage(reader)
 	if err != nil {
@@ -574,20 +659,25 @@ func ReleaseMessage(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	froms, err := m.Header.AddressList("From")
+	fromAddresses, err := m.Header.AddressList("From")
 	if err != nil {
 		httpError(w, err.Error())
 		return
 	}
 
-	from := froms[0].Address
+	if len(fromAddresses) == 0 {
+		httpError(w, "No From header found")
+		return
+	}
+
+	from := fromAddresses[0].Address
 
 	// if sender is used, then change from to the sender
 	if senders, err := m.Header.AddressList("Sender"); err == nil {
 		from = senders[0].Address
 	}
 
-	msg, err = tools.RemoveMessageHeaders(msg, []string{"Bcc", "Message-Id"})
+	msg, err = tools.RemoveMessageHeaders(msg, []string{"Bcc"})
 	if err != nil {
 		httpError(w, err.Error())
 		return
@@ -607,12 +697,23 @@ func ReleaseMessage(w http.ResponseWriter, r *http.Request) {
 		from = config.SMTPRelayConfig.ReturnPath
 	}
 
-	// generate unique ID
-	uid := uuid.NewV4().String() + "@mailpit"
-	// add unique ID
-	msg = append([]byte("Message-Id: <"+uid+">\r\n"), msg...)
+	// update message date
+	msg, err = tools.UpdateMessageHeader(msg, "Date", time.Now().Format(time.RFC1123Z))
+	if err != nil {
+		httpError(w, err.Error())
+		return
+	}
 
-	if err := smtpd.Send(from, tos, msg); err != nil {
+	// generate unique ID
+	uid := shortuuid.New() + "@mailpit"
+	// update Message-Id with unique ID
+	msg, err = tools.UpdateMessageHeader(msg, "Message-Id", "<"+uid+">")
+	if err != nil {
+		httpError(w, err.Error())
+		return
+	}
+
+	if err := smtpd.Send(from, data.To, msg); err != nil {
 		logger.Log().Errorf("[smtp] error sending message: %s", err.Error())
 		httpError(w, "SMTP error: "+err.Error())
 		return
@@ -622,6 +723,158 @@ func ReleaseMessage(w http.ResponseWriter, r *http.Request) {
 	_, _ = w.Write([]byte("ok"))
 }
 
+// HTMLCheck returns a summary of the HTML client support
+func HTMLCheck(w http.ResponseWriter, r *http.Request) {
+	// swagger:route GET /api/v1/message/{ID}/html-check Other HTMLCheck
+	//
+	// # HTML check
+	//
+	// Returns the summary of the message HTML checker.
+	//
+	//	Produces:
+	//	- application/json
+	//
+	//	Schemes: http, https
+	//
+	//	Responses:
+	//		200: HTMLCheckResponse
+	//		default: ErrorResponse
+
+	vars := mux.Vars(r)
+	id := vars["id"]
+
+	if id == "latest" {
+		var err error
+		id, err = storage.LatestID(r)
+		if err != nil {
+			w.WriteHeader(404)
+			fmt.Fprint(w, err.Error())
+			return
+		}
+	}
+
+	msg, err := storage.GetMessage(id)
+	if err != nil {
+		fourOFour(w)
+		return
+	}
+
+	if msg.HTML == "" {
+		httpError(w, "message does not contain HTML")
+		return
+	}
+
+	checks, err := htmlcheck.RunTests(msg.HTML)
+	if err != nil {
+		httpError(w, err.Error())
+		return
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(checks); err != nil {
+		httpError(w, err.Error())
+	}
+}
+
+// LinkCheck returns a summary of links in the email
+func LinkCheck(w http.ResponseWriter, r *http.Request) {
+	// swagger:route GET /api/v1/message/{ID}/link-check Other LinkCheck
+	//
+	// # Link check
+	//
+	// Returns the summary of the message Link checker.
+	//
+	//	Produces:
+	//	- application/json
+	//
+	//	Schemes: http, https
+	//
+	//	Responses:
+	//		200: LinkCheckResponse
+	//		default: ErrorResponse
+
+	vars := mux.Vars(r)
+	id := vars["id"]
+
+	if id == "latest" {
+		var err error
+		id, err = storage.LatestID(r)
+		if err != nil {
+			w.WriteHeader(404)
+			fmt.Fprint(w, err.Error())
+			return
+		}
+	}
+
+	msg, err := storage.GetMessage(id)
+	if err != nil {
+		fourOFour(w)
+		return
+	}
+
+	f := r.URL.Query().Get("follow")
+	followRedirects := f == "true" || f == "1"
+
+	summary, err := linkcheck.RunTests(msg, followRedirects)
+	if err != nil {
+		httpError(w, err.Error())
+		return
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(summary); err != nil {
+		httpError(w, err.Error())
+	}
+}
+
+// SpamAssassinCheck returns a summary of SpamAssassin results (if enabled)
+func SpamAssassinCheck(w http.ResponseWriter, r *http.Request) {
+	// swagger:route GET /api/v1/message/{ID}/sa-check Other SpamAssassinCheck
+	//
+	// # SpamAssassin check
+	//
+	// Returns the SpamAssassin summary (if enabled) of the message.
+	//
+	//	Produces:
+	//	- application/json
+	//
+	//	Schemes: http, https
+	//
+	//	Responses:
+	//		200: SpamAssassinResponse
+	//		default: ErrorResponse
+
+	vars := mux.Vars(r)
+	id := vars["id"]
+
+	if id == "latest" {
+		var err error
+		id, err = storage.LatestID(r)
+		if err != nil {
+			w.WriteHeader(404)
+			fmt.Fprint(w, err.Error())
+			return
+		}
+	}
+
+	msg, err := storage.GetMessageRaw(id)
+	if err != nil {
+		fourOFour(w)
+		return
+	}
+
+	summary, err := spamassassin.Check(msg)
+	if err != nil {
+		httpError(w, err.Error())
+		return
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(summary); err != nil {
+		httpError(w, err.Error())
+	}
+}
+
 // FourOFour returns a basic 404 message
 func fourOFour(w http.ResponseWriter) {
 	w.Header().Set("Referrer-Policy", "no-referrer")
@@ -640,6 +893,21 @@ func httpError(w http.ResponseWriter, msg string) {
 	fmt.Fprint(w, msg)
 }
 
+// httpJSONError returns a basic error message (400 response) in JSON format
+func httpJSONError(w http.ResponseWriter, msg string) {
+	w.Header().Set("Referrer-Policy", "no-referrer")
+	w.Header().Set("Content-Security-Policy", config.ContentSecurityPolicy)
+	w.WriteHeader(http.StatusBadRequest)
+	e := JSONErrorMessage{
+		Error: msg,
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(e); err != nil {
+		httpError(w, err.Error())
+	}
+}
+
 // Get the start and limit based on query params. Defaults to 0, 50
 func getStartLimit(req *http.Request) (start int, limit int) {
 	start = 0
@@ -659,7 +927,7 @@ func getStartLimit(req *http.Request) (start int, limit int) {
 }
 
 // GetOptions returns a blank response
-func GetOptions(w http.ResponseWriter, r *http.Request) {
+func GetOptions(w http.ResponseWriter, _ *http.Request) {
 
 	w.Header().Set("Content-Type", "text/plain")
 	_, _ = w.Write([]byte(""))

server/apiv1/info.go

@@ -3,34 +3,12 @@ package apiv1
 import (
 	"encoding/json"
 	"net/http"
-	"os"
-	"runtime"
 
-	"github.com/axllent/mailpit/config"
-	"github.com/axllent/mailpit/storage"
-	"github.com/axllent/mailpit/utils/updater"
+	"github.com/axllent/mailpit/internal/stats"
 )
 
-// Response includes the current and latest Mailpit version, database info, and memory usage
-//
-// swagger:model AppInformation
-type appInformation struct {
-	// Current Mailpit version
-	Version string
-	// Latest Mailpit version
-	LatestVersion string
-	// Database path
-	Database string
-	// Database size in bytes
-	DatabaseSize int64
-	// Total number of messages in the database
-	Messages int
-	// Current memory usage in bytes
-	Memory uint64
-}
-
 // AppInfo returns some basic details about the running app, and latest release.
-func AppInfo(w http.ResponseWriter, r *http.Request) {
+func AppInfo(w http.ResponseWriter, _ *http.Request) {
 	// swagger:route GET /api/v1/info application AppInformation
 	//
 	// # Get application information
@@ -45,30 +23,9 @@ func AppInfo(w http.ResponseWriter, r *http.Request) {
 	//	Responses:
 	//		200: InfoResponse
 	//		default: ErrorResponse
-	info := appInformation{}
-	info.Version = config.Version
-
-	var m runtime.MemStats
-	runtime.ReadMemStats(&m)
-
-	info.Memory = m.Sys - m.HeapReleased
-
-	latest, _, _, err := updater.GithubLatest(config.Repo, config.RepoBinaryName)
-	if err == nil {
-		info.LatestVersion = latest
-	}
-
-	info.Database = config.DataFile
-
-	db, err := os.Stat(info.Database)
-	if err == nil {
-		info.DatabaseSize = db.Size()
-	}
-
-	info.Messages = storage.CountTotal()
-
-	bytes, _ := json.Marshal(info)
 
 	w.Header().Add("Content-Type", "application/json")
-	_, _ = w.Write(bytes)
+	if err := json.NewEncoder(w).Encode(stats.Load()); err != nil {
+		httpError(w, err.Error())
+	}
 }

server/apiv1/send.go

@@ -0,0 +1,275 @@
+package apiv1
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"net/mail"
+	"strings"
+
+	"github.com/axllent/mailpit/internal/tools"
+	"github.com/axllent/mailpit/server/smtpd"
+	"github.com/jhillyerd/enmime"
+)
+
+// swagger:parameters SendMessage
+type sendMessageParams struct {
+	// in: body
+	Body *SendRequest
+}
+
+// SendRequest to send a message via HTTP
+// swagger:model SendRequest
+type SendRequest struct {
+	// "From" recipient
+	// required: true
+	From struct {
+		// Optional name
+		// example: John Doe
+		Name string
+		// Email address
+		// example: john@example.com
+		// required: true
+		Email string
+	}
+
+	// "To" recipients
+	To []struct {
+		// Optional name
+		// example: Jane Doe
+		Name string
+		// Email address
+		// example: jane@example.com
+		// required: true
+		Email string
+	}
+
+	// Cc recipients
+	Cc []struct {
+		// Optional name
+		// example: Manager
+		Name string
+		// Email address
+		// example: manager@example.com
+		// required: true
+		Email string
+	}
+
+	// Bcc recipients email addresses only
+	// example: ["jack@example.com"]
+	Bcc []string
+
+	// Optional Reply-To recipients
+	ReplyTo []struct {
+		// Optional name
+		// example: Secretary
+		Name string
+		// Email address
+		// example: secretary@example.com
+		// required: true
+		Email string
+	}
+
+	// Subject
+	// example: Mailpit message via the HTTP API
+	Subject string
+
+	// Message body (text)
+	// example: This is the text body
+	Text string
+
+	// Message body (HTML)
+	// example: <p style="font-family: arial">Mailpit is <b>awesome</b>!</p>
+	HTML string
+
+	// Attachments
+	Attachments []struct {
+		// Base64-encoded string of the file content
+		// required: true
+		// example: VGhpcyBpcyBhIHBsYWluIHRleHQgYXR0YWNobWVudA==
+		Content string
+		// Filename
+		// required: true
+		// example: AttachedFile.txt
+		Filename string
+	}
+
+	// Mailpit tags
+	// example: ["Tag 1","Tag 2"]
+	Tags []string
+
+	// Optional headers in {"key":"value"} format
+	// example: {"X-IP":"1.2.3.4"}
+	Headers map[string]string
+}
+
+// SendMessageConfirmation struct
+type SendMessageConfirmation struct {
+	// Database ID
+	// example: iAfZVVe2UQFNSG5BAjgYwa
+	ID string
+}
+
+// JSONErrorMessage struct
+type JSONErrorMessage struct {
+	// Error message
+	// example: invalid format
+	Error string
+}
+
+// SendMessageHandler handles HTTP requests to send a new message
+func SendMessageHandler(w http.ResponseWriter, r *http.Request) {
+	// swagger:route POST /api/v1/send message SendMessage
+	//
+	// # Send a message
+	//
+	// Send a message via the HTTP API.
+	//
+	//	Consumes:
+	//	- application/json
+	//
+	//	Produces:
+	//	- application/json
+	//
+	//	Schemes: http, https
+	//
+	//	Responses:
+	//		200: sendMessageResponse
+	//		default: jsonErrorResponse
+
+	decoder := json.NewDecoder(r.Body)
+
+	data := SendRequest{}
+
+	if err := decoder.Decode(&data); err != nil {
+		httpJSONError(w, err.Error())
+		return
+	}
+
+	id, err := data.Send(r.RemoteAddr)
+
+	if err != nil {
+		httpJSONError(w, err.Error())
+		return
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(SendMessageConfirmation{ID: id}); err != nil {
+		httpError(w, err.Error())
+	}
+}
+
+// Send will validate the message structure and attempt to send to Mailpit.
+// It returns a sending summary or an error.
+func (d SendRequest) Send(remoteAddr string) (string, error) {
+	ip, _, err := net.SplitHostPort(remoteAddr)
+	if err != nil {
+		return "", fmt.Errorf("error parsing request RemoteAddr: %s", err.Error())
+	}
+
+	ipAddr := &net.IPAddr{IP: net.ParseIP(ip)}
+
+	addresses := []string{}
+
+	msg := enmime.Builder().
+		From(d.From.Name, d.From.Email).
+		Subject(d.Subject).
+		Text([]byte(d.Text))
+
+	if d.HTML != "" {
+		msg = msg.HTML([]byte(d.HTML))
+	}
+
+	if len(d.To) > 0 {
+		for _, a := range d.To {
+			if _, err := mail.ParseAddress(a.Email); err == nil {
+				msg = msg.To(a.Name, a.Email)
+				addresses = append(addresses, a.Email)
+			} else {
+				return "", fmt.Errorf("invalid To address: %s", a.Email)
+			}
+		}
+	}
+
+	if len(d.Cc) > 0 {
+		for _, a := range d.Cc {
+			if _, err := mail.ParseAddress(a.Email); err == nil {
+				msg = msg.CC(a.Name, a.Email)
+				addresses = append(addresses, a.Email)
+			} else {
+				return "", fmt.Errorf("invalid Cc address: %s", a.Email)
+			}
+		}
+	}
+
+	if len(d.Bcc) > 0 {
+		for _, e := range d.Bcc {
+			if _, err := mail.ParseAddress(e); err == nil {
+				msg = msg.BCC("", e)
+				addresses = append(addresses, e)
+			} else {
+				return "", fmt.Errorf("invalid Bcc address: %s", e)
+			}
+		}
+	}
+
+	if len(d.ReplyTo) > 0 {
+		for _, a := range d.ReplyTo {
+			if _, err := mail.ParseAddress(a.Email); err == nil {
+				msg = msg.ReplyTo(a.Name, a.Email)
+			} else {
+				return "", fmt.Errorf("invalid Reply-To address: %s", a.Email)
+			}
+		}
+	}
+
+	restrictedHeaders := []string{"To", "From", "Cc", "Bcc", "Reply-To", "Date", "Subject", "Content-Type", "Mime-Version"}
+
+	if len(d.Tags) > 0 {
+		msg = msg.Header("X-Tags", strings.Join(d.Tags, ", "))
+		restrictedHeaders = append(restrictedHeaders, "X-Tags")
+	}
+
+	if len(d.Headers) > 0 {
+		for k, v := range d.Headers {
+			// check header isn't in "restricted" headers
+			if tools.InArray(k, restrictedHeaders) {
+				return "", fmt.Errorf("cannot overwrite header: \"%s\"", k)
+			}
+			msg = msg.Header(k, v)
+		}
+	}
+
+	if len(d.Attachments) > 0 {
+		for _, a := range d.Attachments {
+			// workaround: split string because JS readAsDataURL() returns the base64 string
+			// with the mime type prefix eg: data:image/png;base64,<base64String>
+			parts := strings.Split(a.Content, ",")
+			content := parts[len(parts)-1]
+			b, err := base64.StdEncoding.DecodeString(content)
+			if err != nil {
+				return "", fmt.Errorf("error decoding base64 attachment \"%s\": %s", a.Filename, err.Error())
+			}
+
+			mimeType := http.DetectContentType(b)
+			msg = msg.AddAttachment(b, mimeType, a.Filename)
+		}
+	}
+
+	part, err := msg.Build()
+	if err != nil {
+		return "", fmt.Errorf("error building message: %s", err.Error())
+	}
+
+	var buff bytes.Buffer
+
+	if err := part.Encode(io.Writer(&buff)); err != nil {
+		return "", fmt.Errorf("error building message: %s", err.Error())
+	}
+
+	return smtpd.Store(ipAddr, d.From.Email, addresses, buff.Bytes())
+}

server/apiv1/structs.go

@@ -1,19 +1,27 @@
 package apiv1
 
 import (
-	"github.com/axllent/mailpit/storage"
+	"github.com/axllent/mailpit/internal/htmlcheck"
+	"github.com/axllent/mailpit/internal/linkcheck"
+	"github.com/axllent/mailpit/internal/spamassassin"
+	"github.com/axllent/mailpit/internal/storage"
 )
 
 // MessagesSummary is a summary of a list of messages
 type MessagesSummary struct {
 	// Total number of messages in mailbox
-	Total int `json:"total"`
+	Total float64 `json:"total"`
 
 	// Total number of unread messages in mailbox
-	Unread int `json:"unread"`
+	Unread float64 `json:"unread"`
 
-	// Number of results returned
-	Count int `json:"count"`
+	// Legacy - now undocumented in API specs but left for backwards compatibility.
+	// Removed from API documentation 2023-07-12
+	// swagger:ignore
+	Count float64 `json:"count"`
+
+	// Total number of messages matching current query
+	MessagesCount float64 `json:"messages_count"`
 
 	// Pagination offset
 	Start int `json:"start"`
@@ -22,7 +30,7 @@ type MessagesSummary struct {
 	Tags []string `json:"tags"`
 
 	// Messages summary
-	// in:body
+	// in: body
 	Messages []storage.MessageSummary `json:"messages"`
 }
 
@@ -37,3 +45,12 @@ type Message = storage.Message
 
 // Attachment summary
 type Attachment = storage.Attachment
+
+// HTMLCheckResponse summary
+type HTMLCheckResponse = htmlcheck.Response
+
+// LinkCheckResponse summary
+type LinkCheckResponse = linkcheck.Response
+
+// SpamAssassinResponse summary
+type SpamAssassinResponse = spamassassin.Result

server/apiv1/swagger.go

@@ -1,18 +1,24 @@
 package apiv1
 
-// These structs are for the purpose of defining swagger HTTP responses
+import "github.com/axllent/mailpit/internal/stats"
+
+// These structs are for the purpose of defining swagger HTTP parameters & responses
 
 // Application information
 // swagger:response InfoResponse
 type infoResponse struct {
 	// Application information
-	Body appInformation
+	//
+	// in: body
+	Body stats.AppInformation
 }
 
 // Web UI configuration
 // swagger:response WebUIConfigurationResponse
 type webUIConfigurationResponse struct {
 	// Web UI configuration settings
+	//
+	// in: body
 	Body webUIConfiguration
 }
 
@@ -28,71 +34,166 @@ type messagesSummaryResponse struct {
 // swagger:model MessageHeaders
 type messageHeaders map[string][]string
 
+// swagger:parameters DeleteMessages
+type deleteMessagesParams struct {
+	// in: body
+	Body *deleteMessagesRequestBody
+}
+
 // Delete request
 // swagger:model DeleteRequest
-type deleteRequest struct {
-	// ids
-	// in:body
-	IDs []string `json:"ids"`
+type deleteMessagesRequestBody struct {
+	// Array of message database IDs
+	//
+	// required: false
+	// example: ["5dec4247-812e-4b77-9101-e25ad406e9ea", "8ac66bbc-2d9a-4c41-ad99-00aa75fa674e"]
+	IDs []string
+}
+
+// swagger:parameters SetReadStatus
+type setReadStatusParams struct {
+	// in: body
+	Body *setReadStatusRequestBody
 }
 
 // Set read status request
-// swagger:model SetReadStatusRequest
-type setReadStatusRequest struct {
+// swagger:model setReadStatusRequestBody
+type setReadStatusRequestBody struct {
 	// Read status
-	Read bool `json:"read"`
+	//
+	// required: false
+	// default: false
+	// example: true
+	Read bool
 
-	// ids
-	// in:body
-	IDs []string `json:"ids"`
+	// Array of message database IDs
+	//
+	// required: false
+	// example: ["5dec4247-812e-4b77-9101-e25ad406e9ea", "8ac66bbc-2d9a-4c41-ad99-00aa75fa674e"]
+	IDs []string
+}
+
+// swagger:parameters SetTags
+type setTagsParams struct {
+	// in: body
+	Body *setTagsRequestBody
 }
 
 // Set tags request
-// swagger:model SetTagsRequest
-type setTagsRequest struct {
-	// Tags
-	// in:body
-	Tags []string `json:"tags"`
+// swagger:model setTagsRequestBody
+type setTagsRequestBody struct {
+	// Array of tag names to set
+	//
+	// required: true
+	// example: ["Tag 1", "Tag 2"]
+	Tags []string
 
-	// IDs
-	// in:body
-	IDs []string `json:"ids"`
+	// Array of message database IDs
+	//
+	// required: true
+	// example: ["5dec4247-812e-4b77-9101-e25ad406e9ea", "8ac66bbc-2d9a-4c41-ad99-00aa75fa674e"]
+	IDs []string
+}
+
+// swagger:parameters ReleaseMessage
+type releaseMessageParams struct {
+	// Message database ID
+	//
+	// in: path
+	// description: Message database ID
+	// required: true
+	ID string
+
+	// in: body
+	Body *releaseMessageRequestBody
 }
 
 // Release request
-// swagger:model ReleaseMessageRequest
-type releaseMessageRequest struct {
-	// To
-	// in:body
-	To []string `json:"to"`
+// swagger:model releaseMessageRequestBody
+type releaseMessageRequestBody struct {
+	// Array of email addresses to relay the message to
+	// required: true
+	// example: ["user1@example.com", "user2@example.com"]
+	To []string
 }
 
-// Binary data reponse inherits the attachment's content type
-// swagger:response BinaryResponse
-type binaryResponse struct {
-	// in: body
-	Body string
+// swagger:parameters HTMLCheck
+type htmlCheckParams struct {
+	// Message database ID or "latest"
+	//
+	// in: path
+	// description: Message database ID or "latest"
+	// required: true
+	ID string
 }
 
+// swagger:parameters LinkCheck
+type linkCheckParams struct {
+	// Message database ID or "latest"
+	//
+	// in: path
+	// description: Message database ID or "latest"
+	// required: true
+	ID string
+
+	// Follow redirects
+	//
+	// in: query
+	// description: Follow redirects
+	// required: false
+	// default: false
+	Follow string `json:"follow"`
+}
+
+// swagger:parameters SpamAssassinCheck
+type spamAssassinCheckParams struct {
+	// Message database ID or "latest"
+	//
+	// in: path
+	// description: Message database ID or "latest"
+	// required: true
+	ID string
+}
+
+// Binary data response inherits the attachment's content type.
+// swagger:response BinaryResponse
+type binaryResponse string
+
 // Plain text response
 // swagger:response TextResponse
-type textResponse struct {
-	// in: body
-	Body string
-}
+type textResponse string
 
-// Error reponse
+// HTML response
+// swagger:response HTMLResponse
+type htmlResponse string
+
+// HTTP error response will return with a >= 400 response code
 // swagger:response ErrorResponse
-type errorResponse struct {
-	// The error message
+// example: invalid request
+type errorResponse string
+
+// Plain text "ok" response
+// swagger:response OKResponse
+type okResponse string
+
+// Plain JSON array response
+// swagger:response ArrayResponse
+type arrayResponse []string
+
+// Confirmation message for HTTP send API
+// swagger:response sendMessageResponse
+type sendMessageResponse struct {
+	// Response for sending messages via the HTTP API
+	//
 	// in: body
-	Body string
+	Body SendMessageConfirmation
 }
 
-// Plain text "ok" reponse
-// swagger:response OKResponse
-type okResponse struct {
-	// Default reponse
+// JSON error response
+// swagger:response jsonErrorResponse
+type jsonErrorResponse struct {
+	// A JSON-encoded error response
+	//
 	// in: body
-	Body string
+	Body JSONErrorMessage
 }

server/apiv1/thumbnails.go

@@ -10,11 +10,11 @@ import (
 	"net/http"
 	"strings"
 
-	"github.com/axllent/mailpit/storage"
-	"github.com/axllent/mailpit/utils/logger"
-	"github.com/disintegration/imaging"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/storage"
 	"github.com/gorilla/mux"
 	"github.com/jhillyerd/enmime"
+	"github.com/kovidgoyal/imaging"
 )
 
 var (
@@ -74,10 +74,10 @@ func Thumbnail(w http.ResponseWriter, r *http.Request) {
 
 	buf := bytes.NewBuffer(a.Content)
 
-	img, err := imaging.Decode(buf)
+	img, err := imaging.Decode(buf, imaging.AutoOrientation(true))
 	if err != nil {
 		// it's not an image, return default
-		logger.Log().Warning(err)
+		logger.Log().Warnf("[image] %s", err.Error())
 		blankImage(a, w)
 		return
 	}
@@ -99,7 +99,7 @@ func Thumbnail(w http.ResponseWriter, r *http.Request) {
 	dst = imaging.OverlayCenter(dst, dstImageFill, 1.0)
 
 	if err := jpeg.Encode(foo, dst, &jpeg.Options{Quality: 70}); err != nil {
-		logger.Log().Warning(err)
+		logger.Log().Warnf("[image] %s", err.Error())
 		blankImage(a, w)
 		return
 	}
@@ -114,13 +114,13 @@ func blankImage(a *enmime.Part, w http.ResponseWriter) {
 	rect := image.Rect(0, 0, thumbWidth, thumbHeight)
 	img := image.NewRGBA(rect)
 	background := color.RGBA{255, 255, 255, 255}
-	draw.Draw(img, img.Bounds(), &image.Uniform{background}, image.ZP, draw.Src)
+	draw.Draw(img, img.Bounds(), &image.Uniform{background}, image.Point{}, draw.Src)
 	var b bytes.Buffer
 	foo := bufio.NewWriter(&b)
 	dstImageFill := imaging.Fill(img, thumbWidth, thumbHeight, imaging.Center, imaging.Lanczos)
 
 	if err := jpeg.Encode(foo, dstImageFill, &jpeg.Options{Quality: 70}); err != nil {
-		logger.Log().Warning(err)
+		logger.Log().Warnf("[image] %s", err.Error())
 	}
 
 	fileName := a.FileName

server/apiv1/webui.go

@@ -20,18 +20,28 @@ type webUIConfiguration struct {
 		SMTPServer string
 		// Enforced Return-Path (if set) for relay bounces
 		ReturnPath string
-		// Allowlist of accepted recipients
+		// Only allow relaying to these recipients (regex)
+		AllowedRecipients string
+		// DEPRECATED 2024/03/12
+		// swagger:ignore
 		RecipientAllowlist string
 	}
+
+	// Whether SpamAssassin is enabled
+	SpamAssassin bool
+
+	// Whether messages with duplicate IDs are ignored
+	DuplicatesIgnored bool
 }
 
 // WebUIConfig returns configuration settings for the web UI.
-func WebUIConfig(w http.ResponseWriter, r *http.Request) {
+func WebUIConfig(w http.ResponseWriter, _ *http.Request) {
 	// swagger:route GET /api/v1/webui application WebUIConfiguration
 	//
 	// # Get web UI configuration
 	//
 	// Returns configuration settings for the web UI.
+	// Intended for web UI only!
 	//
 	//	Produces:
 	//	- application/json
@@ -47,11 +57,16 @@ func WebUIConfig(w http.ResponseWriter, r *http.Request) {
 	if config.ReleaseEnabled {
 		conf.MessageRelay.SMTPServer = fmt.Sprintf("%s:%d", config.SMTPRelayConfig.Host, config.SMTPRelayConfig.Port)
 		conf.MessageRelay.ReturnPath = config.SMTPRelayConfig.ReturnPath
-		conf.MessageRelay.RecipientAllowlist = config.SMTPRelayConfig.RecipientAllowlist
+		conf.MessageRelay.AllowedRecipients = config.SMTPRelayConfig.AllowedRecipients
+		// DEPRECATED 2024/03/12
+		conf.MessageRelay.RecipientAllowlist = config.SMTPRelayConfig.AllowedRecipients
 	}
 
-	bytes, _ := json.Marshal(conf)
+	conf.SpamAssassin = config.EnableSpamAssassin != ""
+	conf.DuplicatesIgnored = config.IgnoreDuplicateIDs
 
 	w.Header().Add("Content-Type", "application/json")
-	_, _ = w.Write(bytes)
+	if err := json.NewEncoder(w).Encode(conf); err != nil {
+		httpError(w, err.Error())
+	}
 }

server/handlers/k8healthz.go

@@ -2,7 +2,7 @@ package handlers
 
 import "net/http"
 
-// Healthz is a liveness probe
+// HealthzHandler is a liveness probe
 func HealthzHandler(w http.ResponseWriter, _ *http.Request) {
 	w.WriteHeader(http.StatusOK)
 }

server/handlers/k8sready.go

@@ -3,12 +3,14 @@ package handlers
 import (
 	"net/http"
 	"sync/atomic"
+
+	"github.com/axllent/mailpit/internal/storage"
 )
 
 // ReadyzHandler is a ready probe that signals k8s to be able to retrieve traffic
 func ReadyzHandler(isReady *atomic.Value) http.HandlerFunc {
 	return func(w http.ResponseWriter, _ *http.Request) {
-		if isReady == nil || !isReady.Load().(bool) {
+		if isReady == nil || !isReady.Load().(bool) || storage.Ping() != nil {
 			http.Error(w, http.StatusText(http.StatusServiceUnavailable), http.StatusServiceUnavailable)
 			return
 		}

server/handlers/messages.go

@@ -0,0 +1,185 @@
+package handlers
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strings"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/storage"
+	"github.com/gorilla/mux"
+)
+
+// RedirectToLatestMessage (method: GET) redirects the web UI to the latest message
+func RedirectToLatestMessage(w http.ResponseWriter, r *http.Request) {
+	var messages []storage.MessageSummary
+	var err error
+
+	search := strings.TrimSpace(r.URL.Query().Get("query"))
+	if search != "" {
+		messages, _, err = storage.Search(search, "", 0, 1)
+		if err != nil {
+			httpError(w, err.Error())
+			return
+		}
+	} else {
+		messages, err = storage.List(0, 1)
+		if err != nil {
+			httpError(w, err.Error())
+			return
+		}
+	}
+
+	uri := config.Webroot
+
+	if len(messages) == 1 {
+		uri, err = url.JoinPath(uri, "/view/"+messages[0].ID)
+		if err != nil {
+			httpError(w, err.Error())
+			return
+		}
+	}
+
+	http.Redirect(w, r, uri, 302)
+}
+
+// GetMessageHTML (method: GET) returns a rendered version of a message's HTML part
+func GetMessageHTML(w http.ResponseWriter, r *http.Request) {
+	// swagger:route GET /view/{ID}.html testing GetMessageHTML
+	//
+	// # Render message HTML part
+	//
+	// Renders just the message's HTML part which can be used for UI integration testing.
+	// Attached inline images are modified to link to the API provided they exist.
+	// Note that is the message does not contain a HTML part then an 404 error is returned.
+	//
+	// The ID can be set to `latest` to return the latest message.
+	//
+	//	Produces:
+	//	- text/html
+	//
+	//	Schemes: http, https
+	//
+	//	Parameters:
+	//	  + name: ID
+	//	    in: path
+	//	    description: Database ID or latest
+	//	    required: true
+	//	    type: string
+	//
+	//	Responses:
+	//		200: HTMLResponse
+	//		default: ErrorResponse
+
+	vars := mux.Vars(r)
+
+	id := vars["id"]
+
+	if id == "latest" {
+		var err error
+		id, err = storage.LatestID(r)
+		if err != nil {
+			w.WriteHeader(404)
+			fmt.Fprint(w, err.Error())
+			return
+		}
+	}
+
+	msg, err := storage.GetMessage(id)
+	if err != nil {
+		w.WriteHeader(404)
+		fmt.Fprint(w, "Message not found")
+		return
+	}
+	if msg.HTML == "" {
+		w.WriteHeader(404)
+		fmt.Fprint(w, "This message does not contain a HTML part")
+		return
+	}
+
+	html := linkInlineImages(msg)
+	w.Header().Add("Content-Type", "text/html; charset=utf-8")
+	_, _ = w.Write([]byte(html))
+}
+
+// GetMessageText (method: GET) returns a message's text part
+func GetMessageText(w http.ResponseWriter, r *http.Request) {
+	// swagger:route GET /view/{ID}.txt testing GetMessageText
+	//
+	// # Render message text part
+	//
+	// Renders just the message's text part which can be used for UI integration testing.
+	//
+	// The ID can be set to `latest` to return the latest message.
+	//
+	//	Produces:
+	//	- text/plain
+	//
+	//	Schemes: http, https
+	//
+	//	Parameters:
+	//	  + name: ID
+	//	    in: path
+	//	    description: Database ID or latest
+	//	    required: true
+	//	    type: string
+	//
+	//	Responses:
+	//		200: TextResponse
+	//		default: ErrorResponse
+
+	vars := mux.Vars(r)
+
+	id := vars["id"]
+
+	if id == "latest" {
+		var err error
+		id, err = storage.LatestID(r)
+		if err != nil {
+			w.WriteHeader(404)
+			fmt.Fprint(w, err.Error())
+			return
+		}
+	}
+
+	msg, err := storage.GetMessage(id)
+	if err != nil {
+		w.WriteHeader(404)
+		fmt.Fprint(w, "Message not found")
+		return
+	}
+
+	w.Header().Add("Content-Type", "text/plain; charset=utf-8")
+	_, _ = w.Write([]byte(msg.Text))
+}
+
+// This will rewrite all inline image paths to API URLs
+func linkInlineImages(msg *storage.Message) string {
+	html := msg.HTML
+
+	for _, a := range msg.Inline {
+		if a.ContentID != "" {
+			re := regexp.MustCompile(`(?i)(=["\']?)(cid:` + regexp.QuoteMeta(a.ContentID) + `)(["|\'|\\s|\\/|>|;])`)
+			u := config.Webroot + "api/v1/message/" + msg.ID + "/part/" + a.PartID
+			matches := re.FindAllStringSubmatch(html, -1)
+			for _, m := range matches {
+				html = strings.ReplaceAll(html, m[0], m[1]+u+m[3])
+			}
+		}
+	}
+
+	for _, a := range msg.Attachments {
+		if a.ContentID != "" {
+			re := regexp.MustCompile(`(?i)(=["\']?)(cid:` + regexp.QuoteMeta(a.ContentID) + `)(["|\'|\\s|\\/|>|;])`)
+			u := config.Webroot + "api/v1/message/" + msg.ID + "/part/" + a.PartID
+			matches := re.FindAllStringSubmatch(html, -1)
+			for _, m := range matches {
+				html = strings.ReplaceAll(html, m[0], m[1]+u+m[3])
+			}
+		}
+	}
+
+	return html
+}

server/handlers/proxy.go

@@ -0,0 +1,157 @@
+// Package handlers contains a specific handlers
+package handlers
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strings"
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/logger"
+)
+
+var linkRe = regexp.MustCompile(`(?i)^https?:\/\/`)
+
+// ProxyHandler is used to proxy assets for printing
+func ProxyHandler(w http.ResponseWriter, r *http.Request) {
+	uri := strings.TrimSpace(r.URL.Query().Get("url"))
+	if uri == "" {
+		logger.Log().Warn("[proxy] URL missing")
+		httpError(w, "Error: URL missing")
+		return
+	}
+
+	if !linkRe.MatchString(uri) {
+		logger.Log().Warnf("[proxy] invalid URL %s", uri)
+		httpError(w, "Error: invalid URL")
+		return
+	}
+
+	tr := &http.Transport{}
+
+	if config.AllowUntrustedTLS {
+		tr.TLSClientConfig = &tls.Config{InsecureSkipVerify: true} // #nosec
+	}
+
+	client := &http.Client{
+		Transport: tr,
+		Timeout:   10 * time.Second,
+	}
+
+	req, err := http.NewRequest("GET", uri, nil)
+	if err != nil {
+		logger.Log().Warnf("[proxy] %s", err.Error())
+		httpError(w, err.Error())
+		return
+	}
+
+	// use requesting useragent
+	req.Header.Set("User-Agent", r.UserAgent())
+
+	resp, err := client.Do(req)
+	if err != nil {
+		logger.Log().Warnf("[proxy] %s", err.Error())
+		httpError(w, err.Error())
+		return
+	}
+
+	defer resp.Body.Close()
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		logger.Log().Warnf("[proxy] %s", err.Error())
+		httpError(w, err.Error())
+		return
+	}
+
+	// relay common headers
+	if resp.Header.Get("content-type") != "" {
+		w.Header().Set("content-type", resp.Header.Get("content-type"))
+	}
+	if resp.Header.Get("last-modified") != "" {
+		w.Header().Set("last-modified", resp.Header.Get("last-modified"))
+	}
+	if resp.Header.Get("content-disposition") != "" {
+		w.Header().Set("content-disposition", resp.Header.Get("content-disposition"))
+	}
+	if resp.Header.Get("cache-control") != "" {
+		w.Header().Set("cache-control", resp.Header.Get("cache-control"))
+	}
+
+	// replace url() values with proxy address, eg: fonts & images
+	if strings.HasPrefix(resp.Header.Get("content-type"), "text/css") {
+		var re = regexp.MustCompile(`(?mi)(url\((\'|\")?([^\)\'\"]+)(\'|\")?\))`)
+		body = re.ReplaceAllFunc(body, func(s []byte) []byte {
+			parts := re.FindStringSubmatch(string(s))
+
+			// don't resolve inline `data:..`
+			if strings.HasPrefix(parts[3], "data:") {
+				return []byte(parts[3])
+			}
+
+			address, err := absoluteURL(parts[3], uri)
+			if err != nil {
+				logger.Log().Errorf("[proxy] %s", err.Error())
+				return []byte(parts[3])
+			}
+
+			return []byte("url(" + parts[2] + config.Webroot + "proxy?url=" + url.QueryEscape(address) + parts[4] + ")")
+		})
+	}
+
+	logger.Log().Debugf("[proxy] %s (%d)", uri, resp.StatusCode)
+
+	// relay status code - WriteHeader must come after Header.Set()
+	w.WriteHeader(resp.StatusCode)
+
+	if _, err := w.Write(body); err != nil {
+		logger.Log().Warnf("[proxy] %s", err.Error())
+	}
+}
+
+// AbsoluteURL will return a full URL regardless whether it is relative or absolute
+func absoluteURL(link, baseURL string) (string, error) {
+	// scheme relative links, eg <script src="//example.com/script.js">
+	if len(link) > 1 && link[0:2] == "//" {
+		base, err := url.Parse(baseURL)
+		if err != nil {
+			return link, err
+		}
+		link = base.Scheme + ":" + link
+	}
+
+	u, err := url.Parse(link)
+	if err != nil {
+		return link, err
+	}
+
+	// remove hashes
+	u.Fragment = ""
+
+	base, err := url.Parse(baseURL)
+	if err != nil {
+		return link, err
+	}
+
+	result := base.ResolveReference(u)
+
+	// ensure link is HTTP(S)
+	if result.Scheme != "http" && result.Scheme != "https" {
+		return link, fmt.Errorf("Invalid URL: %s", result.String())
+	}
+
+	return result.String(), nil
+}
+
+// HTTPError returns a basic error message (400 response)
+func httpError(w http.ResponseWriter, msg string) {
+	w.Header().Set("Referrer-Policy", "no-referrer")
+	w.Header().Set("Content-Security-Policy", config.ContentSecurityPolicy)
+	w.WriteHeader(http.StatusBadRequest)
+	w.Header().Set("Content-Type", "text/plain")
+	fmt.Fprint(w, msg)
+}

server/pop3/functions.go

@@ -0,0 +1,76 @@
+package pop3
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"strings"
+
+	"github.com/axllent/mailpit/internal/auth"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/storage"
+)
+
+func authUser(username, password string) bool {
+	return auth.POP3Credentials.Match(username, password)
+}
+
+// Send a response with debug logging
+func sendResponse(c net.Conn, m string) {
+	fmt.Fprintf(c, "%s\r\n", m)
+	logger.Log().Debugf("[pop3] response: %s", m)
+}
+
+// Send a response without debug logging (for data)
+func sendData(c net.Conn, m string) {
+	fmt.Fprintf(c, "%s\r\n", m)
+}
+
+func getMessages() ([]message, error) {
+	messages := []message{}
+	list, err := storage.List(0, 100)
+	if err != nil {
+		return messages, err
+	}
+
+	for _, m := range list {
+		msg := message{}
+		msg.ID = m.ID
+		msg.Size = m.Size
+		messages = append(messages, msg)
+	}
+
+	return messages, nil
+}
+
+// POP3 TOP command returns the headers, followed by the next x lines
+func getTop(id string, nr int) (string, string, error) {
+	var header, body string
+	raw, err := storage.GetMessageRaw(id)
+	if err != nil {
+		return header, body, errors.New("-ERR no such message")
+	}
+
+	parts := strings.SplitN(string(raw), "\r\n\r\n", 2)
+	header = parts[0]
+	lines := []string{}
+	if nr > 0 && len(parts) == 2 {
+		lines = strings.SplitN(parts[1], "\r\n", nr)
+	}
+
+	return header, strings.Join(lines, "\r\n"), nil
+}
+
+// cuts the line into command and arguments
+func getCommand(line string) (string, []string) {
+	line = strings.Trim(line, "\r \n")
+	cmd := strings.Split(line, " ")
+	return cmd[0], cmd[1:]
+}
+
+func getSafeArg(args []string, nr int) (string, error) {
+	if nr < len(args) {
+		return args[nr], nil
+	}
+	return "", errors.New("Out of range")
+}

server/pop3/pop3.go

@@ -0,0 +1,324 @@
+// Package pop3 is a simple POP3 server for Mailpit.
+// By default it is disabled unless password credentials have been loaded.
+//
+// References: https://github.com/r0stig/golang-pop3 | https://github.com/inbucket/inbucket
+// See RFC: https://datatracker.ietf.org/doc/html/rfc1939
+package pop3
+
+import (
+	"bufio"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/auth"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/storage"
+	"github.com/axllent/mailpit/server/websockets"
+)
+
+const (
+	// UNAUTHORIZED state
+	UNAUTHORIZED = 1
+	// TRANSACTION state
+	TRANSACTION = 2
+	// UPDATE state
+	UPDATE = 3
+)
+
+// Run will start the pop3 server if enabled
+func Run() {
+	if auth.POP3Credentials == nil || config.POP3Listen == "" {
+		// POP3 server is disabled without authentication
+		return
+	}
+
+	var listener net.Listener
+	var err error
+
+	if config.POP3TLSCert != "" {
+		cer, err2 := tls.LoadX509KeyPair(config.POP3TLSCert, config.POP3TLSKey)
+		if err2 != nil {
+			logger.Log().Errorf("[pop3] %s", err2.Error())
+			return
+		}
+
+		tlsConfig := &tls.Config{
+			Certificates: []tls.Certificate{cer},
+			MinVersion:   tls.VersionTLS12,
+		}
+
+		listener, err = tls.Listen("tcp", config.POP3Listen, tlsConfig)
+	} else {
+		// unencrypted
+		listener, err = net.Listen("tcp", config.POP3Listen)
+	}
+
+	if err != nil {
+		logger.Log().Errorf("[pop3] %s", err.Error())
+		return
+	}
+
+	logger.Log().Infof("[pop3] starting on %s", config.POP3Listen)
+
+	for {
+		conn, err := listener.Accept()
+		if err != nil {
+			continue
+		}
+
+		// run as goroutine
+		go handleClient(conn)
+	}
+}
+
+type message struct {
+	ID   string
+	Size float64
+}
+
+func handleClient(conn net.Conn) {
+	var (
+		user     = ""
+		state    = 1
+		toDelete = []string{}
+	)
+
+	defer func() {
+		if state == UPDATE {
+			for _, id := range toDelete {
+				_ = storage.DeleteMessages([]string{id})
+			}
+			if len(toDelete) > 0 {
+				// update web UI to remove deleted messages
+				websockets.Broadcast("prune", nil)
+			}
+		}
+
+		if err := conn.Close(); err != nil {
+			logger.Log().Errorf("[pop3] %s", err.Error())
+		}
+	}()
+
+	reader := bufio.NewReader(conn)
+
+	messages := []message{}
+
+	// State
+	// 1 = Unauthorized
+	// 2 = Transaction mode
+	// 3 = update mode
+
+	logger.Log().Debugf("[pop3] connection opened by %s", conn.RemoteAddr().String())
+
+	// First welcome the new connection
+	sendResponse(conn, "+OK Mailpit POP3 server")
+
+	timeoutDuration := 30 * time.Second
+
+	for {
+		// POP3 server enforced a timeout of 30 seconds
+		if err := conn.SetDeadline(time.Now().Add(timeoutDuration)); err != nil {
+			logger.Log().Errorf("[pop3] %s", err.Error())
+			return
+		}
+
+		// Reads a line from the client
+		rawLine, err := reader.ReadString('\n')
+		if err != nil {
+			logger.Log().Errorf("[pop3] %s", err.Error())
+			return
+		}
+
+		// Parses the command
+		cmd, args := getCommand(rawLine)
+
+		logger.Log().Debugf("[pop3] received: %s (%s)", strings.TrimSpace(rawLine), conn.RemoteAddr().String())
+
+		if cmd == "CAPA" {
+			// List our capabilities per RFC2449
+			sendResponse(conn, "+OK Capability list follows")
+			sendResponse(conn, "TOP")
+			sendResponse(conn, "USER")
+			sendResponse(conn, "UIDL")
+			sendResponse(conn, "IMPLEMENTATION Mailpit")
+			sendResponse(conn, ".")
+			continue
+		} else if cmd == "USER" && state == UNAUTHORIZED {
+			if len(args) != 1 {
+				sendResponse(conn, "-ERR must supply a user")
+				return
+			}
+			// always true - stash for PASS
+			sendResponse(conn, "+OK")
+			user = args[0]
+
+		} else if cmd == "PASS" && state == UNAUTHORIZED {
+			if len(args) != 1 {
+				sendResponse(conn, "-ERR must supply a password")
+				return
+			}
+
+			pass := args[0]
+			if authUser(user, pass) {
+				sendResponse(conn, "+OK signed in")
+				messages, err = getMessages()
+				if err != nil {
+					logger.Log().Errorf("[pop3] %s", err.Error())
+				}
+				state = 2
+			} else {
+				sendResponse(conn, "-ERR invalid password")
+				logger.Log().Warnf("[pop3] failed login: %s", user)
+			}
+
+		} else if cmd == "STAT" && state == TRANSACTION {
+			totalSize := float64(0)
+			for _, m := range messages {
+				totalSize = totalSize + m.Size
+			}
+
+			sendResponse(conn, fmt.Sprintf("+OK %d %d", len(messages), int64(totalSize)))
+
+		} else if cmd == "LIST" && state == TRANSACTION {
+			totalSize := float64(0)
+			for _, m := range messages {
+				totalSize = totalSize + m.Size
+			}
+			sendData(conn, fmt.Sprintf("+OK %d messages (%d octets)", len(messages), int64(totalSize)))
+
+			// print all sizes
+			for row, m := range messages {
+				sendData(conn, fmt.Sprintf("%d %d", row+1, m.Size))
+			}
+			// end
+			sendData(conn, ".")
+
+		} else if cmd == "UIDL" && state == TRANSACTION {
+			totalSize := float64(0)
+			for _, m := range messages {
+				totalSize = totalSize + m.Size
+			}
+
+			sendData(conn, "+OK unique-id listing follows")
+
+			// print all message IDS
+			for row, m := range messages {
+				sendData(conn, fmt.Sprintf("%d %s", row+1, m.ID))
+			}
+			// end
+			sendData(conn, ".")
+
+		} else if cmd == "RETR" && state == TRANSACTION {
+			if len(args) != 1 {
+				sendResponse(conn, "-ERR no such message")
+				return
+			}
+
+			nr, err := strconv.Atoi(args[0])
+			if err != nil {
+				sendResponse(conn, "-ERR no such message")
+				return
+			}
+
+			if nr < 1 || nr > len(messages) {
+				sendResponse(conn, "-ERR no such message")
+				return
+			}
+
+			m := messages[nr-1]
+			raw, err := storage.GetMessageRaw(m.ID)
+			if err != nil {
+				sendResponse(conn, "-ERR no such message")
+				return
+			}
+
+			size := len(raw)
+			sendData(conn, fmt.Sprintf("+OK %d octets", size))
+
+			// When all lines of the response have been sent, a
+			// final line is sent, consisting of a termination octet (decimal code
+			// 046, ".") and a CRLF pair. If any line of the multi-line response
+			// begins with the termination octet, the line is "byte-stuffed" by
+			// pre-pending the termination octet to that line of the response.
+			// @see: https://www.ietf.org/rfc/rfc1939.txt
+			sendData(conn, strings.Replace(string(raw), "\n.", "\n..", -1))
+			sendData(conn, ".")
+
+		} else if cmd == "TOP" && state == TRANSACTION {
+			arg, err := getSafeArg(args, 0)
+			if err != nil {
+				sendResponse(conn, "-ERR TOP requires two arguments")
+				return
+			}
+			nr, err := strconv.Atoi(arg)
+			if err != nil {
+				sendResponse(conn, "-ERR TOP requires two arguments")
+				return
+			}
+
+			if nr < 1 || nr > len(messages) {
+				sendResponse(conn, "-ERR no such message")
+				return
+			}
+			arg2, err := getSafeArg(args, 1)
+			if err != nil {
+				sendResponse(conn, "-ERR TOP requires two arguments")
+				return
+			}
+
+			lines, err := strconv.Atoi(arg2)
+			if err != nil {
+				sendResponse(conn, "-ERR TOP requires two arguments")
+				return
+			}
+
+			m := messages[nr-1]
+			headers, body, err := getTop(m.ID, lines)
+			if err != nil {
+				sendResponse(conn, err.Error())
+				return
+			}
+
+			sendData(conn, "+OK Top of message follows")
+			sendData(conn, headers+"\r\n")
+			sendData(conn, body)
+			sendData(conn, ".")
+
+		} else if cmd == "NOOP" && state == TRANSACTION {
+			sendData(conn, "+OK")
+		} else if cmd == "DELE" && state == TRANSACTION {
+			arg, _ := getSafeArg(args, 0)
+			nr, err := strconv.Atoi(arg)
+			if err != nil {
+				logger.Log().Warnf("[pop3] -ERR invalid DELETE integer: %s", arg)
+				sendResponse(conn, "-ERR invalid integer")
+				return
+			}
+
+			if nr < 1 || nr > len(messages) {
+				logger.Log().Warnf("[pop3] -ERR no such message")
+				sendResponse(conn, "-ERR no such message")
+				return
+			}
+			toDelete = append(toDelete, messages[nr-1].ID)
+
+			sendResponse(conn, "+OK")
+
+		} else if cmd == "RSET" && state == TRANSACTION {
+			toDelete = []string{}
+			sendData(conn, "+OK")
+
+		} else if cmd == "QUIT" {
+			state = UPDATE
+			return
+		} else {
+			logger.Log().Warnf("[pop3] -ERR %s not implemented", cmd)
+			sendResponse(conn, fmt.Sprintf("-ERR %s not implemented", cmd))
+		}
+	}
+}

server/server.go

@@ -2,20 +2,28 @@
 package server
 
 import (
+	"bytes"
 	"compress/gzip"
 	"embed"
+	"fmt"
 	"io"
 	"io/fs"
 	"net/http"
 	"os"
 	"strings"
 	"sync/atomic"
+	"text/template"
+	"time"
 
 	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/internal/auth"
+	"github.com/axllent/mailpit/internal/logger"
+	"github.com/axllent/mailpit/internal/stats"
+	"github.com/axllent/mailpit/internal/storage"
 	"github.com/axllent/mailpit/server/apiv1"
 	"github.com/axllent/mailpit/server/handlers"
+	"github.com/axllent/mailpit/server/pop3"
 	"github.com/axllent/mailpit/server/websockets"
-	"github.com/axllent/mailpit/utils/logger"
 	"github.com/gorilla/mux"
 )
 
@@ -29,10 +37,11 @@ var AccessControlAllowOrigin string
 func Listen() {
 	isReady := &atomic.Value{}
 	isReady.Store(false)
+	stats.Track()
 
 	serverRoot, err := fs.Sub(embeddedFS, "ui")
 	if err != nil {
-		logger.Log().Errorf("[http] %s", err)
+		logger.Log().Errorf("[http] %s", err.Error())
 		os.Exit(1)
 	}
 
@@ -40,59 +49,106 @@ func Listen() {
 
 	go websockets.MessageHub.Run()
 
-	r := defaultRoutes()
+	go pop3.Run()
+
+	r := apiRoutes()
 
 	// kubernetes probes
-	r.HandleFunc("/livez", handlers.HealthzHandler)
-	r.HandleFunc("/readyz", handlers.ReadyzHandler(isReady))
+	r.HandleFunc(config.Webroot+"livez", handlers.HealthzHandler)
+	r.HandleFunc(config.Webroot+"readyz", handlers.ReadyzHandler(isReady))
 
-	// web UI websocket
-	r.HandleFunc(config.Webroot+"api/events", apiWebsocket).Methods("GET")
+	// proxy handler for screenshots
+	r.HandleFunc(config.Webroot+"proxy", middleWareFunc(handlers.ProxyHandler)).Methods("GET")
 
-	// virtual filesystem for others
-	r.PathPrefix(config.Webroot).Handler(middlewareHandler(http.StripPrefix(config.Webroot, http.FileServer(http.FS(serverRoot)))))
+	// virtual filesystem for /dist/ & some individual files
+	r.PathPrefix(config.Webroot + "dist/").Handler(middlewareHandler(http.StripPrefix(config.Webroot, http.FileServer(http.FS(serverRoot)))))
+	r.PathPrefix(config.Webroot + "api/").Handler(middlewareHandler(http.StripPrefix(config.Webroot, http.FileServer(http.FS(serverRoot)))))
+	r.Path(config.Webroot + "favicon.ico").Handler(middlewareHandler(http.StripPrefix(config.Webroot, http.FileServer(http.FS(serverRoot)))))
+	r.Path(config.Webroot + "favicon.svg").Handler(middlewareHandler(http.StripPrefix(config.Webroot, http.FileServer(http.FS(serverRoot)))))
+	r.Path(config.Webroot + "mailpit.svg").Handler(middlewareHandler(http.StripPrefix(config.Webroot, http.FileServer(http.FS(serverRoot)))))
+	r.Path(config.Webroot + "notification.png").Handler(middlewareHandler(http.StripPrefix(config.Webroot, http.FileServer(http.FS(serverRoot)))))
 
 	// redirect to webroot if no trailing slash
 	if config.Webroot != "/" {
-		redir := strings.TrimRight(config.Webroot, "/")
-		r.HandleFunc(redir, middleWareFunc(addSlashToWebroot)).Methods("GET")
+		redirect := strings.TrimRight(config.Webroot, "/")
+		r.HandleFunc(redirect, middleWareFunc(addSlashToWebroot)).Methods("GET")
 	}
 
+	// UI shortcut
+	r.HandleFunc(config.Webroot+"view/latest", handlers.RedirectToLatestMessage).Methods("GET")
+
+	// frontend testing
+	r.HandleFunc(config.Webroot+"view/{id}.html", handlers.GetMessageHTML).Methods("GET")
+	r.HandleFunc(config.Webroot+"view/{id}.txt", handlers.GetMessageText).Methods("GET")
+
+	// web UI via virtual index.html
+	r.PathPrefix(config.Webroot + "view/").Handler(middleWareFunc(index)).Methods("GET")
+	r.Path(config.Webroot + "search").Handler(middleWareFunc(index)).Methods("GET")
+	r.Path(config.Webroot).Handler(middleWareFunc(index)).Methods("GET")
+
+	// put it all together
 	http.Handle("/", r)
 
-	if config.UIAuthFile != "" {
-		logger.Log().Info("[http] enabling web UI basic authentication")
+	if auth.UICredentials != nil {
+		logger.Log().Info("[http] enabling basic authentication")
 	}
 
 	// Mark the application here as ready
 	isReady.Store(true)
 
+	server := &http.Server{
+		Addr:         config.HTTPListen,
+		ReadTimeout:  30 * time.Second,
+		WriteTimeout: 30 * time.Second,
+	}
+
 	if config.UITLSCert != "" && config.UITLSKey != "" {
-		logger.Log().Infof("[http] starting secure server on https://%s%s", logger.CleanHTTPIP(config.HTTPListen), config.Webroot)
-		logger.Log().Fatal(http.ListenAndServeTLS(config.HTTPListen, config.UITLSCert, config.UITLSKey, nil))
+		logger.Log().Infof("[http] starting on %s (TLS)", config.HTTPListen)
+		logger.Log().Infof("[http] accessible via https://%s%s", logger.CleanHTTPIP(config.HTTPListen), config.Webroot)
+		if err := server.ListenAndServeTLS(config.UITLSCert, config.UITLSKey); err != nil {
+			storage.Close()
+			logger.Log().Fatal(err)
+		}
+
 	} else {
-		logger.Log().Infof("[http] starting server on http://%s%s", logger.CleanHTTPIP(config.HTTPListen), config.Webroot)
-		logger.Log().Fatal(http.ListenAndServe(config.HTTPListen, nil))
+		logger.Log().Infof("[http] starting on %s", config.HTTPListen)
+		logger.Log().Infof("[http] accessible via http://%s%s", logger.CleanHTTPIP(config.HTTPListen), config.Webroot)
+		if err := server.ListenAndServe(); err != nil {
+			storage.Close()
+			logger.Log().Fatal(err)
+		}
 	}
 }
 
-func defaultRoutes() *mux.Router {
+func apiRoutes() *mux.Router {
 	r := mux.NewRouter()
 
 	// API V1
 	r.HandleFunc(config.Webroot+"api/v1/messages", middleWareFunc(apiv1.GetMessages)).Methods("GET")
 	r.HandleFunc(config.Webroot+"api/v1/messages", middleWareFunc(apiv1.SetReadStatus)).Methods("PUT")
 	r.HandleFunc(config.Webroot+"api/v1/messages", middleWareFunc(apiv1.DeleteMessages)).Methods("DELETE")
-	r.HandleFunc(config.Webroot+"api/v1/tags", middleWareFunc(apiv1.SetTags)).Methods("PUT")
 	r.HandleFunc(config.Webroot+"api/v1/search", middleWareFunc(apiv1.Search)).Methods("GET")
+	r.HandleFunc(config.Webroot+"api/v1/search", middleWareFunc(apiv1.DeleteSearch)).Methods("DELETE")
+	r.HandleFunc(config.Webroot+"api/v1/send", middleWareFunc(apiv1.SendMessageHandler)).Methods("POST")
+	r.HandleFunc(config.Webroot+"api/v1/tags", middleWareFunc(apiv1.GetAllTags)).Methods("GET")
+	r.HandleFunc(config.Webroot+"api/v1/tags", middleWareFunc(apiv1.SetMessageTags)).Methods("PUT")
 	r.HandleFunc(config.Webroot+"api/v1/message/{id}/part/{partID}", middleWareFunc(apiv1.DownloadAttachment)).Methods("GET")
 	r.HandleFunc(config.Webroot+"api/v1/message/{id}/part/{partID}/thumb", middleWareFunc(apiv1.Thumbnail)).Methods("GET")
 	r.HandleFunc(config.Webroot+"api/v1/message/{id}/headers", middleWareFunc(apiv1.GetHeaders)).Methods("GET")
 	r.HandleFunc(config.Webroot+"api/v1/message/{id}/raw", middleWareFunc(apiv1.DownloadRaw)).Methods("GET")
 	r.HandleFunc(config.Webroot+"api/v1/message/{id}/release", middleWareFunc(apiv1.ReleaseMessage)).Methods("POST")
+	r.HandleFunc(config.Webroot+"api/v1/message/{id}/html-check", middleWareFunc(apiv1.HTMLCheck)).Methods("GET")
+	r.HandleFunc(config.Webroot+"api/v1/message/{id}/link-check", middleWareFunc(apiv1.LinkCheck)).Methods("GET")
+	if config.EnableSpamAssassin != "" {
+		r.HandleFunc(config.Webroot+"api/v1/message/{id}/sa-check", middleWareFunc(apiv1.SpamAssassinCheck)).Methods("GET")
+	}
 	r.HandleFunc(config.Webroot+"api/v1/message/{id}", middleWareFunc(apiv1.GetMessage)).Methods("GET")
 	r.HandleFunc(config.Webroot+"api/v1/info", middleWareFunc(apiv1.AppInfo)).Methods("GET")
 	r.HandleFunc(config.Webroot+"api/v1/webui", middleWareFunc(apiv1.WebUIConfig)).Methods("GET")
+	r.HandleFunc(config.Webroot+"api/v1/swagger.json", middleWareFunc(swaggerBasePath)).Methods("GET")
+
+	// web UI websocket
+	r.HandleFunc(config.Webroot+"api/events", apiWebsocket).Methods("GET")
 
 	// return blank 200 response for OPTIONS requests for CORS
 	r.PathPrefix(config.Webroot + "api/v1/").Handler(middleWareFunc(apiv1.GetOptions)).Methods("OPTIONS")
@@ -129,7 +185,7 @@ func middleWareFunc(fn http.HandlerFunc) http.HandlerFunc {
 			w.Header().Set("Access-Control-Allow-Headers", "*")
 		}
 
-		if config.UIAuthFile != "" {
+		if auth.UICredentials != nil {
 			user, pass, ok := r.BasicAuth()
 
 			if !ok {
@@ -137,7 +193,7 @@ func middleWareFunc(fn http.HandlerFunc) http.HandlerFunc {
 				return
 			}
 
-			if !config.UIAuth.Match(user, pass) {
+			if !auth.UICredentials.Match(user, pass) {
 				basicAuthResponse(w)
 				return
 			}
@@ -168,7 +224,7 @@ func middlewareHandler(h http.Handler) http.Handler {
 			w.Header().Set("Access-Control-Allow-Headers", "*")
 		}
 
-		if config.UIAuthFile != "" {
+		if auth.UICredentials != nil {
 			user, pass, ok := r.BasicAuth()
 
 			if !ok {
@@ -176,7 +232,7 @@ func middlewareHandler(h http.Handler) http.Handler {
 				return
 			}
 
-			if !config.UIAuth.Match(user, pass) {
+			if !auth.UICredentials.Match(user, pass) {
 				basicAuthResponse(w)
 				return
 			}
@@ -201,4 +257,73 @@ func addSlashToWebroot(w http.ResponseWriter, r *http.Request) {
 // Websocket to broadcast changes
 func apiWebsocket(w http.ResponseWriter, r *http.Request) {
 	websockets.ServeWs(websockets.MessageHub, w, r)
+	storage.BroadcastMailboxStats()
+}
+
+// Wrapper to artificially inject a basePath to the swagger.json if a webroot has been specified
+func swaggerBasePath(w http.ResponseWriter, _ *http.Request) {
+	f, err := embeddedFS.ReadFile("ui/api/v1/swagger.json")
+	if err != nil {
+		panic(err)
+	}
+
+	if config.Webroot != "/" {
+		// artificially inject a path at the start
+		replacement := fmt.Sprintf("{\n  \"basePath\": \"%s\",", strings.TrimRight(config.Webroot, "/"))
+
+		f = bytes.Replace(f, []byte("{"), []byte(replacement), 1)
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	_, _ = w.Write(f)
+}
+
+// Just returns the default HTML template
+func index(w http.ResponseWriter, _ *http.Request) {
+
+	var h = `<!DOCTYPE html>
+<html lang="en" class="h-100">
+
+<head>
+	<meta charset="utf-8">
+	<meta name="viewport" content="width=device-width,initial-scale=1.0">
+	<meta name="referrer" content="no-referrer">
+	<meta name="robots" content="noindex, nofollow, noarchive">
+	<link rel="icon" href="{{ .Webroot }}favicon.svg">
+	<title>Mailpit</title>
+	<link rel=stylesheet href="{{ .Webroot }}dist/app.css?{{ .Version }}">
+</head>
+
+<body class="h-100">
+	<div class="container-fluid h-100 d-flex flex-column" id="app" data-webroot="{{ .Webroot }}" data-version="{{ .Version }}">
+		<noscript>You require JavaScript to use this app.</noscript>
+	</div>
+
+	<script src="{{ .Webroot }}dist/app.js?{{ .Version }}"></script>
+</body>
+
+</html>`
+
+	t, err := template.New("index").Parse(h)
+	if err != nil {
+		panic(err)
+	}
+
+	data := struct {
+		Webroot string
+		Version string
+	}{
+		Webroot: config.Webroot,
+		Version: config.Version,
+	}
+
+	buff := new(bytes.Buffer)
+
+	err = t.Execute(buff, data)
+	if err != nil {
+		panic(err)
+	}
+
+	w.Header().Add("Content-Type", "text/html")
+	_, _ = w.Write(buff.Bytes())
 }