Merge branch 'release/v1.6.22'

Includes changes required for bootstrap5-tags

.github/workflows/build-docker.yml

@@ -22,6 +22,13 @@ jobs:
         username: ${{ secrets.DOCKER_USERNAME }}
         password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
 
+    - name: Parse semver
+      id: semver_parser 
+      uses: booxmedialtd/ws-action-parse-semver@v1.4.7
+      with:
+        input_string: '${{ github.ref_name }}'
+        version_extractor_regex: 'v(.*)$'
+
     - name: Build and push
       uses: docker/build-push-action@v4
       with:
@@ -31,4 +38,7 @@ jobs:
         build-args: |
           "VERSION=${{ github.ref_name }}"
         push: true
-        tags: axllent/mailpit:latest,axllent/mailpit:${{ github.ref_name }}
+        tags: |
+          axllent/mailpit:latest
+          axllent/mailpit:${{ github.ref_name }}
+          axllent/mailpit:v${{ steps.semver_parser.outputs.major }}.${{ steps.semver_parser.outputs.minor }}

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

@@ -10,13 +10,13 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/stale@v7.0.0
+      - uses: actions/stale@v8.0.0
         with:
-          days-before-issue-stale: 30
+          days-before-issue-stale: 21
           days-before-issue-close: 7
-          exempt-issue-labels: "enhancement,bug"
+          exempt-issue-labels: "enhancement,bug,javascript,docker"
           stale-issue-label: "stale"
-          stale-issue-message: "This issue is stale because it has been open for 30 days with no activity."
+          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."
           days-before-pr-stale: -1
           days-before-pr-close: -1

.github/workflows/release-build.yml

@@ -33,7 +33,7 @@ jobs:
     - run: npm run package
 
     # build the binaries
-    - uses: wangyoucao577/go-release-action@v1.36
+    - uses: wangyoucao577/go-release-action@v1.38
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
         goos: ${{ matrix.goos }}
@@ -44,4 +44,5 @@ jobs:
         extra_files: LICENSE README.md
         md5sum: false
         overwrite: true
+        retry: 5
         ldflags: -w -X "github.com/axllent/mailpit/config.Version=${{ github.ref_name }}"

.github/workflows/tests.yml

@@ -12,7 +12,7 @@ jobs:
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/setup-go@v3
+    - uses: actions/setup-go@v4
       with:
         go-version: ${{ matrix.go-version }}
     - uses: actions/checkout@v3

.gitignore

@@ -1,5 +1,6 @@
 /node_modules/
 /send
+/sendmail/sendmail
 /server/ui/dist
 /Makefile
 /mailpit*

CHANGELOG.md

@@ -2,6 +2,229 @@
 
 Notable changes to Mailpit will be documented in this file.
 
+## [v1.6.22]
+
+### Feature
+- Clearer SMTP error messages
+
+### Libs
+- Update Go modules
+- Upgrade node modules
+
+
+## [v1.6.21]
+
+### UI
+- More accurate clickable hyperlink logic in plain text messages
+
+
+## [v1.6.20]
+
+### Feature
+- Convert links into clickable hyperlinks in plain text message content
+
+### Libs
+- Update node modules
+
+
+## [v1.6.19]
+
+### Fix
+- Only display sendmail help when sendmail subcommand is invoked
+
+
+## [v1.6.18]
+
+### API
+- Sort tags before saving
+
+### UI
+- Add option to enable tag colors based on tag name hash
+- Display message tags below subject in message overview
+
+
+## [v1.6.17]
+
+### Fix
+- Add single dash arguments support to sendmail command ([#123](https://github.com/axllent/mailpit/issues/123))
+
+
+## [v1.6.16]
+
+### Bugfix
+- Fix sendmail/startup panic
+
+
+## [v1.6.15]
+
+### Feature
+- Add `sendmail -bs` functionality
+
+
+## [v1.6.14]
+
+### Feature
+- Add ability to delete or mark search results read
+- Set tags via X-Tags message header
+
+### Libs
+- Update node modules
+
+
+## [v1.6.13]
+
+### Feature
+- Add SMTP LOGIN authentication method for message relay
+
+
+## [v1.6.12]
+
+### Feature
+- Add Message-Id to MessageSummary ([#116](https://github.com/axllent/mailpit/issues/116))
+
+### Swagger
+- Update swagger field descriptions, add MessageID
+
+
+## [v1.6.11]
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### UI
+- Check for secure context instead of HTTPS ([#114](https://github.com/axllent/mailpit/issues/114))
+
+
+## [v1.6.10]
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### UI
+- Remove "Noto Color Emoji" from default bootstrap font list
+
+
+## [v1.6.9]
+
+### API
+- Return blank 200 response for OPTIONS requests (CORS)
+
+### Bugfix
+- Correctly escape JS cid regex
+
+### Libs
+- Update node modules
+- Update Go modules
+
+
+## [v1.6.8]
+
+### Bugfix
+- Fix Date display when message doesn't contain a Date header
+
+### Feature
+- Add allowlist to filter recipients before relaying messages ([#109](https://github.com/axllent/mailpit/issues/109))
+- Add `-S` short flag for sendmail `--smtp-addr`
+
+
+## [v1.6.7]
+
+### Bugfix
+- Fix auto-deletion cron
+
+
+## [v1.6.6]
+
+### API
+- Set Access-Control-Allow-Headers when --api-cors is set
+- Include correct start value in search reponse
+
+### Feature
+- Option to ignore duplicate Message-IDs
+
+### Libs
+- Update node modules
+- Update Go modules
+
+### Swagger
+- Update swagger field descriptions
+
+### UI
+- Style Undisclosed recipients in message view
+
+
+## [v1.6.5]
+
+### Feature
+- Add Access-Control-Allow-Methods methods when CORS origin is set
+
+
+## [v1.6.4]
+
+### Bugfix
+- Fix UI images not displaying when multiple cid names overlap
+
+
+## [v1.6.3]
+
+### Feature
+- Display clickable toast notifications for new messages
+
+
+## [v1.6.2]
+
+### Bugfix
+- If set use return-path address as SMTP from address
+
+
+## [v1.6.1]
+
+### Bugfix
+- Add API release route again (bad merge)
+
+
+## [v1.6.0]
+
+### API
+- Enable cross-origin resource sharing (CORS) configuration
+- Message relay / release
+- Include Return-Path in message summary data
+
+### Feature
+- Inject/update Bcc header for missing addresses when SMTP recipients do not match messsage headers
+
+### Libs
+- Update Go modules
+- Update node modules
+
+### UI
+- Display Return-Path if different to the From address
+- Message release functionality
+
+
+## [v1.5.5]
+
+### Docker
+- Add Docker image tag for major/minor version
+
+### Feature
+- Update listen regex to allow IPv6 addresses ([#85](https://github.com/axllent/mailpit/issues/85))
+
+
+## [v1.5.4]
+
+### Feature
+- Mobile and tablet HTML preview toggle in desktop mode
+
+
+## [v1.5.3]
+
+### Bugfix
+- Enable SMTP auth flags to be set via env
+
+
 ## [v1.5.2]
 
 ### API

README.md

@@ -20,14 +20,15 @@ Mailpit is inspired by [MailHog](#why-rewrite-mailhog), but much, much faster.
 - 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)
+- 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 only)
+- 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
-- Can handle tens of thousands of emails
+- 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))
@@ -71,26 +72,20 @@ See [Docker instructions](https://github.com/axllent/mailpit/wiki/Docker-images)
 To build Mailpit from source see [building from source](https://github.com/axllent/mailpit/wiki/Building-from-source).
 
 
+### Testing Mailpit
+
+Please refer to [the documentation](https://github.com/axllent/mailpit/wiki/Testing-Mailpit) of how to easily test email delivery to Mailpit.
+
+
 ### Configuring sendmail
 
-There are several different options available:
-
-You can use `mailpit sendmail` as your sendmail configuration in `php.ini`:
-```
-sendmail_path = /usr/local/bin/mailpit sendmail
-```
-
-If Mailpit is found on the same host as sendmail, you can symlink the Mailpit binary to sendmail, eg: `ln -s /usr/local/bin/mailpit /usr/sbin/sendmail`  (only if Mailpit is running on default 1025 port).
-
-You can use your default system `sendmail` binary to route directly to port `1025` (configurable) by calling `/usr/sbin/sendmail -S localhost:1025`.
-
-You can build a Mailpit-specific sendmail binary from source (see [building from source](https://github.com/axllent/mailpit/wiki/Building-from-source)).
+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 severe performance issues, many of the modules are horribly out of date, and other than a few accepted MRs, it is not actively developed.
+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 started trying 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) very poorly designed. It is over-engineered (split over 9 separate projects) and has too many unnecessary features for my purpose. It performs exceptionally poorly when dealing with large amounts of emails or processing any email with an attachment (a single email with a 3MB attachment can take over a minute to ingest). The API also transmits a lot of duplicate and unnecessary data on every message request for all web calls, and there is no HTTP compression.
+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.

cmd/root.go

@@ -85,21 +85,26 @@ func init() {
 	rootCmd.Flags().StringVarP(&config.HTTPListen, "listen", "l", config.HTTPListen, "HTTP bind interface and port for UI")
 	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().BoolVar(&config.UseMessageDates, "use-message-dates", false, "Use message dates as the received dates")
+	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(&config.UIAuthFile, "ui-auth-file", config.UIAuthFile, "A password file for web UI 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(&config.SMTPAuthFile, "smtp-auth-file", config.SMTPAuthFile, "A password file for SMTP authentication")
-	rootCmd.Flags().BoolVar(&config.SMTPAuthAcceptAny, "smtp-auth-accept-any", false, "Accept any SMTP username and password, including none")
+	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", false, "Enable insecure PLAIN & LOGIN authentication")
-	rootCmd.Flags().StringVarP(&config.SMTPCLITags, "tag", "t", config.SMTPCLITags, "Tag new messages matching filters")
+	rootCmd.Flags().BoolVar(&config.SMTPAuthAllowInsecure, "smtp-auth-allow-insecure", config.SMTPAuthAllowInsecure, "Enable insecure PLAIN & LOGIN authentication")
 
-	rootCmd.Flags().BoolVarP(&config.QuietLogging, "quiet", "q", false, "Quiet logging (errors only)")
-	rootCmd.Flags().BoolVarP(&config.VerboseLogging, "verbose", "v", false, "Verbose logging")
+	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!)")
+
+	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")
 
 	// deprecated flags 2022/08/06
 	rootCmd.Flags().StringVarP(&config.UIAuthFile, "auth-file", "a", config.UIAuthFile, "A password file for web UI authentication")
@@ -179,20 +184,32 @@ func initConfigFromEnv() {
 		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 getEnabledFromEnv("MP_USE_MESSAGE_DATES") {
-		config.UseMessageDates = true
+	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 getEnabledFromEnv("MP_QUIET") {
-		config.QuietLogging = true
+		logger.QuietLogging = true
 	}
 	if getEnabledFromEnv("MP_VERBOSE") {
-		config.VerboseLogging = true
+		logger.VerboseLogging = true
 	}
 }
 

cmd/sendmail.go

@@ -1,23 +1,18 @@
 package cmd
 
 import (
+	"os"
+
 	sendmail "github.com/axllent/mailpit/sendmail/cmd"
 	"github.com/spf13/cobra"
 )
 
-var (
-	smtpAddr = "localhost:1025"
-	fromAddr string
-)
-
 // sendmailCmd represents the sendmail command
 var sendmailCmd = &cobra.Command{
-	Use:   "sendmail",
-	Short: "A sendmail command replacement",
-	Long: `A sendmail command replacement.
-	
-You can optionally create a symlink called 'sendmail' to the main binary.`,
+	Use:   "sendmail [flags] [recipients]",
+	Short: "A sendmail command replacement for Mailpit",
 	Run: func(_ *cobra.Command, _ []string) {
+
 		sendmail.Run()
 	},
 }
@@ -25,9 +20,17 @@ You can optionally create a symlink called 'sendmail' to the main binary.`,
 func init() {
 	rootCmd.AddCommand(sendmailCmd)
 
-	// these are simply repeated for cli consistency
-	sendmailCmd.Flags().StringVar(&smtpAddr, "smtp-addr", smtpAddr, "SMTP server address")
-	sendmailCmd.Flags().StringVarP(&fromAddr, "from", "f", "", "SMTP sender")
-	sendmailCmd.Flags().BoolP("long-i", "i", false, "Ignored. This flag exists for sendmail compatibility.")
-	sendmailCmd.Flags().BoolP("long-t", "t", false, "Ignored. This flag exists for sendmail compatibility.")
+	// print out manual help screen
+	sendmailCmd.SetHelpTemplate(sendmail.HelpTemplate([]string{os.Args[0], "sendmail"}))
+
+	// these are simply repeated for cli consistency as cobra/viper does not allow
+	// multi-letter single-dash variables (-bs)
+	sendmailCmd.Flags().StringVarP(&sendmail.FromAddr, "from", "f", sendmail.FromAddr, "SMTP sender")
+	sendmailCmd.Flags().StringVarP(&sendmail.SMTPAddr, "smtp-addr", "S", sendmail.SMTPAddr, "SMTP server address")
+	sendmailCmd.Flags().BoolVarP(&sendmail.UseB, "long-b", "b", false, "Handle SMTP commands on standard input (use as -bs)")
+	sendmailCmd.Flags().BoolVarP(&sendmail.UseS, "long-s", "s", false, "Handle SMTP commands on standard input (use as -bs)")
+	sendmailCmd.Flags().BoolP("verbose", "v", false, "Verbose mode (sends debug output to stderr)")
+	sendmailCmd.Flags().BoolP("long-i", "i", false, "Ignored")
+	sendmailCmd.Flags().BoolP("long-o", "o", false, "Ignored")
+	sendmailCmd.Flags().BoolP("long-t", "t", false, "Ignored")
 }

config/config.go

@@ -10,16 +10,19 @@ import (
 	"regexp"
 	"strings"
 
+	"github.com/axllent/mailpit/utils/logger"
+	"github.com/axllent/mailpit/utils/tools"
 	"github.com/mattn/go-shellwords"
 	"github.com/tg123/go-htpasswd"
+	"gopkg.in/yaml.v3"
 )
 
 var (
 	// SMTPListen to listen on <interface>:<port>
-	SMTPListen = "0.0.0.0:1025"
+	SMTPListen = "[::]:1025"
 
 	// HTTPListen to listen on <interface>:<port>
-	HTTPListen = "0.0.0.0:8025"
+	HTTPListen = "[::]:8025"
 
 	// DataFile for mail (optional)
 	DataFile string
@@ -30,15 +33,6 @@ var (
 	// UseMessageDates sets the Created date using the message date, not the delivered date
 	UseMessageDates bool
 
-	// VerboseLogging for console output
-	VerboseLogging = false
-
-	// QuietLogging for console output (errors only)
-	QuietLogging = false
-
-	// NoLogging for tests
-	NoLogging = false
-
 	// UITLSCert file
 	UITLSCert string
 
@@ -48,7 +42,7 @@ var (
 	// UIAuthFile for basic authentication
 	UIAuthFile string
 
-	// UIAuth used for euthentication
+	// UIAuth used for authentication
 	UIAuth *htpasswd.File
 
 	// Webroot to define the base path for the UI and API
@@ -63,8 +57,8 @@ var (
 	// SMTPAuthFile for SMTP authentication
 	SMTPAuthFile string
 
-	// SMTPAuth used for euthentication
-	SMTPAuth *htpasswd.File
+	// SMTPAuthConfig used for authentication auto-generated from SMTPAuthFile
+	SMTPAuthConfig *htpasswd.File
 
 	// SMTPAuthAllowInsecure allows PLAIN & LOGIN unencrypted authentication
 	SMTPAuthAllowInsecure bool
@@ -72,14 +66,30 @@ var (
 	// SMTPAuthAcceptAny accepts any username/password including none
 	SMTPAuthAcceptAny bool
 
+	// IgnoreDuplicateIDs will skip messages with the same ID
+	IgnoreDuplicateIDs bool
+
 	// SMTPCLITags is used to map the CLI args
 	SMTPCLITags string
 
-	// TagRegexp is the allowed tag characters
-	TagRegexp = regexp.MustCompile(`^([a-zA-Z0-9\-\ \_]){3,}$`)
+	// ValidTagRegexp represents a valid tag
+	ValidTagRegexp = regexp.MustCompile(`^([a-zA-Z0-9\-\ \_]){3,}$`)
 
 	// SMTPTags are expressions to apply tags to new mail
-	SMTPTags []Tag
+	SMTPTags []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
+
+	// 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.
+	// Use with extreme caution!
+	SMTPRelayAllIncoming = 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';"
@@ -94,19 +104,34 @@ var (
 	RepoBinaryName = "mailpit"
 )
 
-// Tag struct
-type Tag struct {
+// AutoTag struct for auto-tagging
+type AutoTag struct {
 	Tag   string
 	Match 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
+}
+
 // VerifyConfig wil do some basic checking
 func VerifyConfig() error {
 	if DataFile != "" && isDir(DataFile) {
 		DataFile = filepath.Join(DataFile, "mailpit.db")
 	}
 
-	re := regexp.MustCompile(`^[a-zA-Z0-9\.\-]{3,}:\d{2,}$`)
+	re := regexp.MustCompile(`^((\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})|(\[([\da-fA-F:])+\])):\d+$`)
 	if !re.MatchString(SMTPListen) {
 		return errors.New("SMTP bind should be in the format of <ip>:<port>")
 	}
@@ -167,7 +192,7 @@ func VerifyConfig() error {
 		if err != nil {
 			return err
 		}
-		SMTPAuth = a
+		SMTPAuthConfig = a
 	}
 
 	if SMTPTLSCert == "" && (SMTPAuthFile != "" || SMTPAuthAcceptAny) && !SMTPAuthAllowInsecure {
@@ -182,7 +207,7 @@ func VerifyConfig() error {
 	s := strings.TrimRight(path.Join("/", Webroot, "/"), "/") + "/"
 	Webroot = s
 
-	SMTPTags = []Tag{}
+	SMTPTags = []AutoTag{}
 
 	p := shellwords.NewParser()
 
@@ -195,19 +220,99 @@ func VerifyConfig() error {
 		for _, a := range args {
 			t := strings.Split(a, "=")
 			if len(t) > 1 {
-				tag := strings.TrimSpace(t[0])
-				if !TagRegexp.MatchString(tag) || len(tag) == 0 {
+				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, Tag{Tag: tag, Match: match})
+				SMTPTags = append(SMTPTags, AutoTag{Tag: tag, Match: match})
 			} else {
 				return fmt.Errorf("Error parsing tags (%s)", a)
 			}
 		}
+	}
+
+	if err := parseRelayConfig(SMTPRelayConfigFile); err != nil {
+		return err
+	}
+
+	if !ReleaseEnabled && SMTPRelayAllIncoming {
+		return errors.New("SMTP relay config must be set to relay all messages")
+	}
+
+	if SMTPRelayAllIncoming {
+		// this deserves a warning
+		logger.Log().Warnf("[smtp] enabling automatic relay of all new messages via %s:%d", SMTPRelayConfig.Host, SMTPRelayConfig.Port)
+	}
+
+	return nil
+}
+
+// Parse & validate the SMTPRelayConfigFile (if set)
+func parseRelayConfig(c string) error {
+	if c == "" {
+		return nil
+	}
+
+	if !isFile(c) {
+		return fmt.Errorf("SMTP relay configuration not found: %s", SMTPRelayConfigFile)
+	}
+
+	data, err := os.ReadFile(c)
+	if err != nil {
+		return err
+	}
+
+	if err := yaml.Unmarshal(data, &SMTPRelayConfig); err != nil {
+		return err
+	}
+
+	if SMTPRelayConfig.Host == "" {
+		return errors.New("SMTP relay host not set")
+	}
+
+	if SMTPRelayConfig.Port == 0 {
+		SMTPRelayConfig.Port = 25 // default
+	}
+
+	SMTPRelayConfig.Auth = strings.ToLower(SMTPRelayConfig.Auth)
+
+	if SMTPRelayConfig.Auth == "" || SMTPRelayConfig.Auth == "none" || SMTPRelayConfig.Auth == "false" {
+		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)
+		}
+	} 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)
+		}
+	} 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)
+		}
+	} else {
+		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 err != nil {
+			return fmt.Errorf("failed to compile recipient allowlist regexp: %e", err)
+		}
+
+		SMTPRelayConfig.RecipientAllowlistRegexp = allowlistRegexp
+		logger.Log().Infof("[smtp] recipient allowlist is active with the following regexp: %s", SMTPRelayConfig.RecipientAllowlist)
 
 	}
 

docs/apiv1/Message.md

@@ -15,6 +15,7 @@ Returns a JSON summary of the message and attachments.
 ```json
 {
   "ID": "d7a5543b-96dd-478b-9b60-2b465c9884de",
+  "MessageID": "12345.67890@localhost",
   "Read": true,
   "From": {
     "Name": "John Doe",
@@ -31,6 +32,7 @@ Returns a JSON summary of the message and attachments.
   "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,

docs/apiv1/Messages.md

@@ -31,9 +31,11 @@ List messages in the mailbox. Messages are returned in the order of latest recei
   "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",
@@ -54,6 +56,7 @@ List messages in the mailbox. Messages are returned in the order of latest recei
       "Bcc": [],
       "Subject": "Message subject",
       "Created": "2022-10-03T21:35:32.228605299+13:00",
+      "Tags": ["test"],
       "Size": 6144,
       "Attachments": 0
     },

docs/apiv1/Search.md

@@ -30,6 +30,7 @@ Matching messages are returned in the order of latest received to oldest.
   "messages": [
     {
       "ID": "1c575821-70ba-466f-8cee-2e1cf0fcdd0f",
+      "MessageID": "12345.67890@localhost",
       "Read": false,
       "From": {
         "Name": "John Doe",

go.mod

@@ -8,19 +8,21 @@ require (
 	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 v1.1.0
-	github.com/klauspost/compress v1.16.3
-	github.com/leporo/sqlf v1.3.0
+	github.com/jhillyerd/enmime v1.0.0
+	github.com/k3a/html2text v1.2.1
+	github.com/klauspost/compress v1.16.6
+	github.com/leporo/sqlf v1.4.0
 	github.com/mattn/go-shellwords v1.0.12
 	github.com/mhale/smtpd v0.8.0
+	github.com/reiver/go-telnet v0.0.0-20180421082511-9ff0b2ab096e
 	github.com/satori/go.uuid v1.2.0
-	github.com/sirupsen/logrus v1.9.0
-	github.com/spf13/cobra v1.6.1
+	github.com/sirupsen/logrus v1.9.3
+	github.com/spf13/cobra v1.7.0
 	github.com/spf13/pflag v1.0.5
 	github.com/tg123/go-htpasswd v1.2.1
-	golang.org/x/text v0.8.0
-	modernc.org/sqlite v1.21.1
+	golang.org/x/text v0.10.0
+	gopkg.in/yaml.v3 v3.0.1
+	modernc.org/sqlite v1.23.1
 )
 
 require (
@@ -35,27 +37,28 @@ require (
 	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 v0.0.18 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/mattn/go-runewidth v0.0.14 // 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/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	golang.org/x/crypto v0.7.0 // indirect
-	golang.org/x/image v0.6.0 // indirect
-	golang.org/x/mod v0.9.0 // indirect
-	golang.org/x/net v0.8.0 // indirect
-	golang.org/x/sys v0.6.0 // indirect
-	golang.org/x/tools v0.7.0 // indirect
+	golang.org/x/crypto v0.10.0 // indirect
+	golang.org/x/image v0.8.0 // indirect
+	golang.org/x/mod v0.11.0 // indirect
+	golang.org/x/net v0.11.0 // indirect
+	golang.org/x/sys v0.9.0 // indirect
+	golang.org/x/tools v0.10.0 // 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 v1.22.3 // indirect
+	modernc.org/cc/v3 v3.41.0 // indirect
+	modernc.org/ccgo/v3 v3.16.14 // indirect
+	modernc.org/libc v1.24.1 // indirect
 	modernc.org/mathutil v1.5.0 // indirect
-	modernc.org/memory v1.5.0 // indirect
+	modernc.org/memory v1.6.0 // indirect
 	modernc.org/opt v0.1.3 // indirect
 	modernc.org/strutil v1.1.3 // indirect
 	modernc.org/token v1.1.0 // indirect

go.sum

@@ -53,21 +53,20 @@ github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
 github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
-github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/jaytaylor/html2text v0.0.0-20230321000545-74c2419ad056 h1:iCHtR9CQyktQ5+f3dMVZfwD2KWJUgm7M0gdL9NGr8KA=
 github.com/jaytaylor/html2text v0.0.0-20230321000545-74c2419ad056/go.mod h1:CVKlgaMiht+LXvHG173ujK6JUhZXKb2u/BQtjPDIvyk=
-github.com/jhillyerd/enmime v0.11.1 h1:U6ToGVxfxNQQhKrAaGxtwOf7Zqksb8AQ3j1CyAWOk5k=
-github.com/jhillyerd/enmime v0.11.1/go.mod h1:EktNOa/V6ka9yCrfoB2uxgefp1lno6OVdszW0iQ5LnM=
+github.com/jhillyerd/enmime v1.0.0 h1:8swYgO1fm68PllCKz5jiLzgD3axNUS388jr6BtRSsl8=
+github.com/jhillyerd/enmime v1.0.0/go.mod h1:EktNOa/V6ka9yCrfoB2uxgefp1lno6OVdszW0iQ5LnM=
 github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
-github.com/k3a/html2text v1.1.0 h1:ks4hKSTdiTRsLr0DM771mI5TvsoG6zH7m1Ulv7eJRHw=
-github.com/k3a/html2text v1.1.0/go.mod h1:ieEXykM67iT8lTvEWBh6fhpH4B23kB9OMKPdIBmgUqA=
+github.com/k3a/html2text v1.2.1 h1:nvnKgBvBR/myqrwfLuiqecUtaK1lB9hGziIJKatNFVY=
+github.com/k3a/html2text v1.2.1/go.mod h1:ieEXykM67iT8lTvEWBh6fhpH4B23kB9OMKPdIBmgUqA=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
-github.com/klauspost/compress v1.16.3 h1:XuJt9zzcnaz6a16/OU53ZjWp/v7/42WcR5t2a0PcNQY=
-github.com/klauspost/compress v1.16.3/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
+github.com/klauspost/compress v1.16.6 h1:91SKEy4K37vkp255cJ8QesJhjyRO0hn9i9G0GoUwLsk=
+github.com/klauspost/compress v1.16.6/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
 github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
@@ -75,17 +74,17 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/leporo/sqlf v1.3.0 h1:nAkuPYxMIJg/sUmcd1h4avV5iYo8tBTGEGOIR4BIZO8=
-github.com/leporo/sqlf v1.3.0/go.mod h1:f4dHqIi1+nLl6k1IsNQ8QIEbGWK49th2ei1IxTXk+2E=
-github.com/mattn/go-isatty v0.0.18 h1:DOKFKCQ7FNG2L1rbrmstDN4QVRdS89Nkh85u68Uwp98=
-github.com/mattn/go-isatty v0.0.18/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/leporo/sqlf v1.4.0 h1:SyWnX/8GSGOzVmanG0Ub1c04mR9nNl6Tq3IeFKX2/4c=
+github.com/leporo/sqlf v1.4.0/go.mod h1:pgN9yKsAnQ+2ewhbZogr98RcasUjPsHF3oXwPPhHvBw=
+github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
+github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-runewidth v0.0.14 h1:+xnbZSEeDbOIg5/mE6JF0w6n9duR1l3/WmbinWVwUuU=
 github.com/mattn/go-runewidth v0.0.14/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mattn/go-shellwords v1.0.12 h1:M2zGm7EW6UQJvDeQxo4T51eKPurbeFbe8WtebGE2xrk=
 github.com/mattn/go-shellwords v1.0.12/go.mod h1:EZzvwXDESEeg03EKmM+RmDnNOPKG4lLtQsUlTZDWQ8Y=
-github.com/mattn/go-sqlite3 v1.14.10/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
 github.com/mattn/go-sqlite3 v1.14.16 h1:yOQRA0RpS5PFz/oikGwBEqvAWhWg5ufRz4ETLjwpU1Y=
+github.com/mattn/go-sqlite3 v1.14.16/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
 github.com/mhale/smtpd v0.8.0 h1:5JvdsehCg33PQrZBvFyDMMUDQmvbzVpZgKob7eYBJc0=
 github.com/mhale/smtpd v0.8.0/go.mod h1:MQl+y2hwIEQCXtNhe5+55n0GZOjSmeqORDIXbqUL3x4=
 github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
@@ -94,6 +93,10 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/reiver/go-oi v1.0.0 h1:nvECWD7LF+vOs8leNGV/ww+F2iZKf3EYjYZ527turzM=
+github.com/reiver/go-oi v1.0.0/go.mod h1:RrDBct90BAhoDTxB1fenZwfykqeGvhI6LsNfStJoEkI=
+github.com/reiver/go-telnet v0.0.0-20180421082511-9ff0b2ab096e h1:quuzZLi72kkJjl+f5AQ93FMcadG19WkS7MO6TXFOSas=
+github.com/reiver/go-telnet v0.0.0-20180421082511-9ff0b2ab096e/go.mod h1:+5vNVvEWwEIx86DB9Ke/+a5wBI464eDRo3eF0LcfpWg=
 github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
@@ -105,21 +108,26 @@ github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTE
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/satori/go.uuid v1.2.0 h1:0uYX9dsZ2yD7q2RtLRtPSdGDWzjeM3TbMJP9utgA0ww=
 github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
-github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
-github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
-github.com/spf13/cobra v1.6.1 h1:o94oiPyS4KD1mPy2fmcYYHHfCxLqYjJOhGsCHFZtEzA=
-github.com/spf13/cobra v1.6.1/go.mod h1:IOw/AERYS7UzyrGinqmz6HLUo219MORXGxhbaJUqzrY=
+github.com/spf13/cobra v1.7.0 h1:hyqWnYt1ZQShIddO5kBpj3vu05/++x6tJ6dg8EC572I=
+github.com/spf13/cobra v1.7.0/go.mod h1:uLxZILRyS/50WlhOIKD7W6V5bgeIt+4sICxh6uRMrb0=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf h1:pvbZ0lM0XWPBqUKqFU8cmavspvIl9nulOYwdy6IFRRo=
 github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf/go.mod h1:RJID2RhlZKId02nZ62WenDCkgHFerpIOmW0iT7GKmXM=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
+github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/tg123/go-htpasswd v1.2.1 h1:i4wfsX1KvvkyoMiHZzjS0VzbAPWfxzI8INcZAKtutoU=
 github.com/tg123/go-htpasswd v1.2.1/go.mod h1:erHp1B86KXdwQf1X5ZrLb7erXZnWueEQezb2dql4q58=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
@@ -127,26 +135,26 @@ github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyC
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A=
-golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
+golang.org/x/crypto v0.10.0 h1:LKqV2xt9+kDzSTfOhx4FrkEBcMrAgHSYgzywV9zcGmM=
+golang.org/x/crypto v0.10.0/go.mod h1:o4eNf7Ede1fv+hwOwZsTHl9EsPFO6q6ZvYR8vYfY45I=
 golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.6.0 h1:bR8b5okrPI3g/gyZakLZHeWxAR8Dn5CyxXv1hLH5g/4=
-golang.org/x/image v0.6.0/go.mod h1:MXLdDR43H7cDJq5GEGXEVeeNhPgi+YYEQ2pC1byI1x0=
+golang.org/x/image v0.8.0 h1:agUcRXV/+w6L9ryntYYsF2x9fQTMd4T8fiiYXAVW6Jg=
+golang.org/x/image v0.8.0/go.mod h1:PwLxp3opCYg4WR2WO9P0L6ESnsD6bLTWcw8zanLMVFM=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
-golang.org/x/mod v0.9.0 h1:KENHtAZL2y3NLMYZeHY9DW8HW8V+kQyJsY/V9JlKvCs=
-golang.org/x/mod v0.9.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.11.0 h1:bUO06HqtnRcc/7l71XBe4WcqTZ+3AH1J59zWDDwLKgU=
+golang.org/x/mod v0.11.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
-golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ=
-golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
+golang.org/x/net v0.11.0 h1:Gi2tvZIJyBtO9SDr1q9h5hEQCp/4L2RQ+ar0qjx2oNU=
+golang.org/x/net v0.11.0/go.mod h1:2L/ixqYpgIVXmeoSA/4Lu7BzTG4KIyPIryS4IsOd1oQ=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -154,8 +162,9 @@ golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.9.0 h1:KS/R3tvhPqvJvwcKfnBHJwwthS11LRhmM5D59eEXa0s=
+golang.org/x/sys v0.9.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
@@ -163,15 +172,15 @@ golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.8.0 h1:57P1ETyNKtuIjB4SRd15iJxuhj8Gc416Y78H3qgMh68=
-golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.10.0 h1:UpjohKhiEgNc0CSauXmwYftY1+LlaC75SJwh0SgCX58=
+golang.org/x/text v0.10.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
-golang.org/x/tools v0.7.0 h1:W4OVu8VVOaIO0yzWMNdepAulS7YfoS3Zabrm8DOXXU4=
-golang.org/x/tools v0.7.0/go.mod h1:4pg6aUX35JBAogB10C9AtvVL+qowtN4pT3CGSQex14s=
+golang.org/x/tools v0.10.0 h1:tvDr/iQoUqNdohiYm0LmmKcBk+q86lb9EprIUFhHHGg=
+golang.org/x/tools v0.10.0/go.mod h1:UJwyiVBsOA2uwvK/e5OY3GTpDUJriEd+/YlqAwLPmyM=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -183,25 +192,25 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 lukechampine.com/uint128 v1.3.0 h1:cDdUVfRwDUDovz610ABgFD17nXD4/uDgVHl2sC3+sbo=
 lukechampine.com/uint128 v1.3.0/go.mod h1:c4eWIwlEGaxC/+H1VguhU4PHXNWDCDMUlWdIWl2j1gk=
-modernc.org/cc/v3 v3.40.0 h1:P3g79IUS/93SYhtoeaHW+kRCIrYaxJ27MFPv+7kaTOw=
-modernc.org/cc/v3 v3.40.0/go.mod h1:/bTg4dnWkSXowUO6ssQKnOV0yMVxDYNIsIrzqTFDGH0=
-modernc.org/ccgo/v3 v3.16.13 h1:Mkgdzl46i5F/CNR/Kj80Ri59hC8TKAhZrYSaqvkwzUw=
-modernc.org/ccgo/v3 v3.16.13/go.mod h1:2Quk+5YgpImhPjv2Qsob1DnZ/4som1lJTodubIcoUkY=
+modernc.org/cc/v3 v3.41.0 h1:QoR1Sn3YWlmA1T4vLaKZfawdVtSiGx8H+cEojbC7v1Q=
+modernc.org/cc/v3 v3.41.0/go.mod h1:Ni4zjJYJ04CDOhG7dn640WGfwBzfE0ecX8TyMB0Fv0Y=
+modernc.org/ccgo/v3 v3.16.14 h1:af6KNtFgsVmnDYrWk3PQCS9XT6BXe7o3ZFJKkIKvXNQ=
+modernc.org/ccgo/v3 v3.16.14/go.mod h1:mPDSujUIaTNWQSG4eqKw+atqLOEbma6Ncsa94WbC9zo=
 modernc.org/ccorpus v1.11.6 h1:J16RXiiqiCgua6+ZvQot4yUuUy8zxgqbqEEUuGPlISk=
 modernc.org/httpfs v1.0.6 h1:AAgIpFZRXuYnkjftxTAZwMIiwEqAfk8aVB2/oA6nAeM=
-modernc.org/libc v1.22.3 h1:D/g6O5ftAfavceqlLOFwaZuA5KYafKwmr30A6iSqoyY=
-modernc.org/libc v1.22.3/go.mod h1:MQrloYP209xa2zHome2a8HLiLm6k0UT8CoHpV74tOFw=
+modernc.org/libc v1.24.1 h1:uvJSeCKL/AgzBo2yYIPPTy82v21KgGnizcGYfBHaNuM=
+modernc.org/libc v1.24.1/go.mod h1:FmfO1RLrU3MHJfyi9eYYmZBfi/R+tqZ6+hQ3yQQUkak=
 modernc.org/mathutil v1.5.0 h1:rV0Ko/6SfM+8G+yKiyI830l3Wuz1zRutdslNoQ0kfiQ=
 modernc.org/mathutil v1.5.0/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=
-modernc.org/memory v1.5.0 h1:N+/8c5rE6EqugZwHii4IFsaJ7MUhoWX07J5tC/iI5Ds=
-modernc.org/memory v1.5.0/go.mod h1:PkUhL0Mugw21sHPeskwZW4D6VscE/GQJOnIpCnW6pSU=
+modernc.org/memory v1.6.0 h1:i6mzavxrE9a30whzMfwf7XWVODx2r5OYXvU46cirX7o=
+modernc.org/memory v1.6.0/go.mod h1:PkUhL0Mugw21sHPeskwZW4D6VscE/GQJOnIpCnW6pSU=
 modernc.org/opt v0.1.3 h1:3XOZf2yznlhC+ibLltsDGzABUGVx8J6pnFMS3E4dcq4=
 modernc.org/opt v0.1.3/go.mod h1:WdSiB5evDcignE70guQKxYUl14mgWtbClRi5wmkkTX0=
-modernc.org/sqlite v1.21.1 h1:GyDFqNnESLOhwwDRaHGdp2jKLDzpyT/rNLglX3ZkMSU=
-modernc.org/sqlite v1.21.1/go.mod h1:XwQ0wZPIh1iKb5mkvCJ3szzbhk+tykC8ZWqTRTgYRwI=
+modernc.org/sqlite v1.23.1 h1:nrSBg4aRQQwq59JpvGEQ15tNxoO5pX/kUjcRNwSAGQM=
+modernc.org/sqlite v1.23.1/go.mod h1:OrDj17Mggn6MhE+iPbBNf7RGKODDE9NFT0f3EwDzJqk=
 modernc.org/strutil v1.1.3 h1:fNMm+oJklMGYfU9Ylcywl0CO5O6nTfaowNsh2wpPjzY=
 modernc.org/strutil v1.1.3/go.mod h1:MEHNA7PdEnEwLvspRMtWTNnp2nnyvMfkimT1NKNAGbw=
-modernc.org/tcl v1.15.1 h1:mOQwiEK4p7HruMZcwKTZPw/aqtGM4aY00uzWhlKKYws=
+modernc.org/tcl v1.15.2 h1:C4ybAYCGJw968e+Me18oW55kD/FexcHbqH2xak1ROSY=
 modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
 modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
-modernc.org/z v1.7.0 h1:xkDw/KepgEjeizO2sNco+hqYkU12taxQFqPEmgm1GWE=
+modernc.org/z v1.7.3 h1:zDJf6iHjrnB+WRD88stbXokugjyc0/pB91ri1gO6LZY=

package.json

@@ -11,7 +11,8 @@
     "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",
     "prismjs": "^1.29.0",
     "rapidoc": "^9.3.4",

sendmail/cmd/cmd.go

@@ -1,9 +1,18 @@
+// Package cmd is the sendmail cli
 package cmd
 
 /**
  * Bare bones sendmail drop-in replacement borrowed from MailHog
+ *
+ * It uses a bit of a hack for flag parsing in order to be compatible
+ * with the cobra sendmail subcommand, as sendmail uses `-bc` which
+ * is not POSIX compatible.
+ *
+ * The -bs command-line switch causes sendmail to run a single SMTP session in the
+ * foreground over its standard input and output, and then exit. The SMTP session
+ * is exactly like a network SMTP session. Usually, one or more messages are
+ * submitted to sendmail for delivery.
  */
-
 import (
 	"bytes"
 	"fmt"
@@ -12,13 +21,27 @@ import (
 	"net/smtp"
 	"os"
 	"os/user"
+	"strings"
 
+	"github.com/axllent/mailpit/config"
 	"github.com/axllent/mailpit/utils/logger"
+	"github.com/reiver/go-telnet"
 	flag "github.com/spf13/pflag"
 )
 
-// Run the Mailpit sendmail replacement.
-func Run() {
+var (
+	// SMTPAddr address
+	SMTPAddr = "localhost:1025"
+	// FromAddr email address
+	FromAddr string
+
+	// UseB - used to set from `-bs`
+	UseB bool
+	// UseS - used to set from `-bs`
+	UseS bool
+)
+
+func init() {
 	host, err := os.Hostname()
 	if err != nil {
 		host = "localhost"
@@ -30,37 +53,68 @@ func Run() {
 		username = user.Username
 	}
 
-	fromAddr := username + "@" + host
-	smtpAddr := "localhost:1025"
-	var recip []string
+	if FromAddr == "" {
+		FromAddr = username + "@" + host
+	}
+}
+
+// Run the Mailpit sendmail replacement.
+func Run() {
+	var recipients []string
 
 	// defaults from envars if provided
 	if len(os.Getenv("MP_SENDMAIL_SMTP_ADDR")) > 0 {
-		smtpAddr = os.Getenv("MP_SENDMAIL_SMTP_ADDR")
+		SMTPAddr = os.Getenv("MP_SENDMAIL_SMTP_ADDR")
 	}
 	if len(os.Getenv("MP_SENDMAIL_FROM")) > 0 {
-		fromAddr = os.Getenv("MP_SENDMAIL_FROM")
+		FromAddr = os.Getenv("MP_SENDMAIL_FROM")
 	}
 
-	var verbose bool
+	flag.StringVarP(&FromAddr, "from", "f", FromAddr, "SMTP sender")
+	flag.StringVarP(&SMTPAddr, "smtp-addr", "S", SMTPAddr, "SMTP server address")
+	flag.BoolVarP(&UseB, "long-b", "b", false, "Handle SMTP commands on standard input (use as -bs)")
+	flag.BoolVarP(&UseS, "long-s", "s", false, "Handle SMTP commands on standard input (use as -bs)")
+	flag.BoolP("verbose", "v", false, "Ignored")
+	flag.BoolP("long-i", "i", false, "Ignored")
+	flag.BoolP("long-o", "o", false, "Ignored")
+	flag.BoolP("long-t", "t", false, "Ignored")
+
+	// set the default help
+	flag.Usage = func() {
+		fmt.Println(HelpTemplate(os.Args[0:1]))
+	}
+
+	var showHelp bool
+	// avoid 'pflag: help requested' error
+	flag.BoolVarP(&showHelp, "help", "h", false, "")
 
-	// override defaults from cli flags
-	flag.StringVarP(&fromAddr, "from", "f", fromAddr, "SMTP sender")
-	flag.StringVar(&smtpAddr, "smtp-addr", smtpAddr, "SMTP server address")
-	flag.BoolVarP(&verbose, "verbose", "v", false, "Verbose mode (sends debug output to stderr)")
-	flag.BoolP("long-b", "b", false, "Ignored. This flag exists for sendmail compatibility.")
-	flag.BoolP("long-i", "i", false, "Ignored. This flag exists for sendmail compatibility.")
-	flag.BoolP("long-o", "o", false, "Ignored. This flag exists for sendmail compatibility.")
-	flag.BoolP("long-s", "s", false, "Ignored. This flag exists for sendmail compatibility.")
-	flag.BoolP("long-t", "t", false, "Ignored. This flag exists for sendmail compatibility.")
-	flag.CommandLine.SortFlags = false
 	flag.Parse()
 
-	// allow recipient to be passed as an argument
-	recip = flag.Args()
+	// allow recipients to be passed as an argument
+	recipients = flag.Args()
 
-	if verbose {
-		fmt.Fprintln(os.Stderr, smtpAddr, fromAddr)
+	if showHelp {
+		flag.Usage()
+		os.Exit(0)
+	}
+
+	// ensure -bs is set
+	if UseB && !UseS || !UseB && UseS {
+		fmt.Printf("error: use -bs")
+		os.Exit(1)
+	}
+
+	// handles `sendmail -bs`
+	if UseB && UseS {
+		var caller telnet.Caller = telnet.StandardCaller
+
+		// telnet directly to SMTP
+		if err := telnet.DialToAndCall(SMTPAddr, caller); err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		return
 	}
 
 	body, err := ioutil.ReadAll(os.Stdin)
@@ -75,15 +129,51 @@ func Run() {
 		os.Exit(11)
 	}
 
-	if len(recip) == 0 {
-		// We only need to parse the message to get a recipient if none where
-		// provided on the command line.
-		recip = append(recip, msg.Header.Get("To"))
+	addresses := []string{}
+
+	if len(recipients) > 0 {
+		addresses = recipients
+	} else {
+		// get all recipients in To, Cc and Bcc
+		if to, err := msg.Header.AddressList("To"); err == nil {
+			for _, a := range to {
+				addresses = append(addresses, a.Address)
+			}
+		}
+		if cc, err := msg.Header.AddressList("Cc"); err == nil {
+			for _, a := range cc {
+				addresses = append(addresses, a.Address)
+			}
+		}
+		if bcc, err := msg.Header.AddressList("Bcc"); err == nil {
+			for _, a := range bcc {
+				addresses = append(addresses, a.Address)
+			}
+		}
 	}
 
-	err = smtp.SendMail(smtpAddr, nil, fromAddr, recip, body)
+	err = smtp.SendMail(SMTPAddr, nil, FromAddr, addresses, body)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "error sending mail")
 		logger.Log().Fatal(err)
 	}
 }
+
+// HelpTemplate returns a string of the help
+func HelpTemplate(args []string) string {
+	return fmt.Sprintf(`A sendmail command replacement for Mailpit (%s)
+
+Usage: %s [flags] [recipients] < message
+
+See: https://github.com/axllent/mailpit
+
+Flags:
+  -S  string  SMTP server address (default "localhost:1025")
+  -f  string  Set the envelope sender address (default "%s")
+  -bs         Handle SMTP commands on standard input
+  -t          Ignored
+  -i          Ignored
+  -o          Ignored
+  -v          Ignored
+`, config.Version, strings.Join(args, " "), FromAddr)
+}

server/apiv1/api.go

@@ -10,8 +10,12 @@ import (
 	"strings"
 
 	"github.com/axllent/mailpit/config"
+	"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"
 )
 
 // GetMessages returns a paginated list of messages as JSON
@@ -30,13 +34,13 @@ func GetMessages(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: start
 	//	    in: query
-	//	    description: pagination offset
+	//	    description: Pagination offset
 	//	    required: false
 	//	    type: integer
 	//	    default: 0
 	//	  + name: limit
 	//	    in: query
-	//	    description: limit results
+	//	    description: Limit results
 	//	    required: false
 	//	    type: integer
 	//	    default: 50
@@ -84,12 +88,12 @@ func Search(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: query
 	//	    in: query
-	//	    description: search query
+	//	    description: Search query
 	//	    required: true
 	//	    type: string
 	//	  + name: limit
 	//	    in: query
-	//	    description: limit results
+	//	    description: Limit results
 	//	    required: false
 	//	    type: integer
 	//	    default: 50
@@ -115,7 +119,7 @@ func Search(w http.ResponseWriter, r *http.Request) {
 
 	var res MessagesSummary
 
-	res.Start = 0
+	res.Start = start
 	res.Messages = messages
 	res.Count = len(messages)
 	res.Total = stats.Total
@@ -143,7 +147,7 @@ func GetMessage(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ID
 	//	    in: path
-	//	    description: message id
+	//	    description: Database ID
 	//	    required: true
 	//	    type: string
 	//
@@ -184,12 +188,12 @@ func DownloadAttachment(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ID
 	//	    in: path
-	//	    description: message id
+	//	    description: Database ID
 	//	    required: true
 	//	    type: string
 	//	  + name: PartID
 	//	    in: path
-	//	    description: attachment part id
+	//	    description: Attachment part ID
 	//	    required: true
 	//	    type: string
 	//
@@ -233,7 +237,7 @@ func GetHeaders(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ID
 	//	    in: path
-	//	    description: message id
+	//	    description: Database ID
 	//	    required: true
 	//	    type: string
 	//
@@ -280,7 +284,7 @@ func DownloadRaw(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ID
 	//	    in: path
-	//	    description: message id
+	//	    description: Database ID
 	//	    required: true
 	//	    type: string
 	//
@@ -326,7 +330,7 @@ func DeleteMessages(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ids
 	//	    in: body
-	//	    description: Message ids to delete
+	//	    description: Database IDs to delete
 	//	    required: false
 	//	    type: DeleteRequest
 	//
@@ -377,7 +381,7 @@ func SetReadStatus(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ids
 	//	    in: body
-	//	    description: Message ids to update
+	//	    description: Database IDs to update
 	//	    required: false
 	//	    type: SetReadStatusRequest
 	//
@@ -455,7 +459,7 @@ func SetTags(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ids
 	//	    in: body
-	//	    description: Message ids to update
+	//	    description: Database IDs to update
 	//	    required: true
 	//	    type: SetTagsRequest
 	//
@@ -491,6 +495,133 @@ 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.
+func ReleaseMessage(w http.ResponseWriter, r *http.Request) {
+	// swagger:route POST /api/v1/message/{ID}/release message Release
+	//
+	// # Release message
+	//
+	// Release a message via a pre-configured external SMTP server..
+	//
+	//	Consumes:
+	//	- application/json
+	//
+	//	Produces:
+	//	- text/plain
+	//
+	//	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
+
+	vars := mux.Vars(r)
+
+	id := vars["id"]
+
+	msg, err := storage.GetMessageRaw(id)
+	if err != nil {
+		fourOFour(w)
+		return
+	}
+
+	decoder := json.NewDecoder(r.Body)
+
+	data := releaseMessageRequest{}
+
+	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 {
+		address, err := mail.ParseAddress(to)
+
+		if err != nil {
+			httpError(w, "Invalid email address: "+to)
+			return
+		}
+
+		if config.SMTPRelayConfig.RecipientAllowlistRegexp != nil && !config.SMTPRelayConfig.RecipientAllowlistRegexp.MatchString(address.Address) {
+			httpError(w, "Mail address does not match allowlist: "+to)
+			return
+		}
+	}
+
+	reader := bytes.NewReader(msg)
+	m, err := mail.ReadMessage(reader)
+	if err != nil {
+		httpError(w, err.Error())
+		return
+	}
+
+	froms, err := m.Header.AddressList("From")
+	if err != nil {
+		httpError(w, err.Error())
+		return
+	}
+
+	from := froms[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"})
+	if err != nil {
+		httpError(w, err.Error())
+		return
+	}
+
+	// set the Return-Path and SMTP mfrom
+	if config.SMTPRelayConfig.ReturnPath != "" {
+		if m.Header.Get("Return-Path") != "<"+config.SMTPRelayConfig.ReturnPath+">" {
+			msg, err = tools.RemoveMessageHeaders(msg, []string{"Return-Path"})
+			if err != nil {
+				httpError(w, err.Error())
+				return
+			}
+			msg = append([]byte("Return-Path: <"+config.SMTPRelayConfig.ReturnPath+">\r\n"), msg...)
+		}
+
+		from = config.SMTPRelayConfig.ReturnPath
+	}
+
+	// generate unique ID
+	uid := uuid.NewV4().String() + "@mailpit"
+	// add unique ID
+	msg = append([]byte("Message-Id: <"+uid+">\r\n"), msg...)
+
+	if err := smtpd.Send(from, tos, msg); err != nil {
+		logger.Log().Errorf("[smtp] error sending message: %s", err.Error())
+		httpError(w, "SMTP error: "+err.Error())
+		return
+	}
+
+	w.Header().Add("Content-Type", "text/plain")
+	_, _ = w.Write([]byte("ok"))
+}
+
 // FourOFour returns a basic 404 message
 func fourOFour(w http.ResponseWriter) {
 	w.Header().Set("Referrer-Policy", "no-referrer")
@@ -526,3 +657,10 @@ func getStartLimit(req *http.Request) (start int, limit int) {
 
 	return start, limit
 }
+
+// GetOptions returns a blank response
+func GetOptions(w http.ResponseWriter, r *http.Request) {
+
+	w.Header().Set("Content-Type", "text/plain")
+	_, _ = w.Write([]byte(""))
+}

server/apiv1/info.go

@@ -11,7 +11,7 @@ import (
 	"github.com/axllent/mailpit/utils/updater"
 )
 
-// Response includes the current and latest Mailpit versions, database info, and memory usage
+// Response includes the current and latest Mailpit version, database info, and memory usage
 //
 // swagger:model AppInformation
 type appInformation struct {
@@ -33,12 +33,12 @@ type appInformation struct {
 func AppInfo(w http.ResponseWriter, r *http.Request) {
 	// swagger:route GET /api/v1/info application AppInformation
 	//
-	// # Get the application information
+	// # Get application information
 	//
 	// Returns basic runtime information, message totals and latest release version.
 	//
 	//	Produces:
-	//	- application/octet-stream
+	//	- application/json
 	//
 	//	Schemes: http, https
 	//

server/apiv1/swagger.go

@@ -9,6 +9,13 @@ type infoResponse struct {
 	Body appInformation
 }
 
+// Web UI configuration
+// swagger:response WebUIConfigurationResponse
+type webUIConfigurationResponse struct {
+	// Web UI configuration settings
+	Body webUIConfiguration
+}
+
 // Message summary
 // swagger:response MessagesSummaryResponse
 type messagesSummaryResponse struct {
@@ -47,11 +54,19 @@ type setTagsRequest struct {
 	// in:body
 	Tags []string `json:"tags"`
 
-	// ids
+	// IDs
 	// in:body
 	IDs []string `json:"ids"`
 }
 
+// Release request
+// swagger:model ReleaseMessageRequest
+type releaseMessageRequest struct {
+	// To
+	// in:body
+	To []string `json:"to"`
+}
+
 // Binary data reponse inherits the attachment's content type
 // swagger:response BinaryResponse
 type binaryResponse struct {

server/apiv1/thumbnails.go

@@ -39,12 +39,12 @@ func Thumbnail(w http.ResponseWriter, r *http.Request) {
 	//	Parameters:
 	//	  + name: ID
 	//	    in: path
-	//	    description: message id
+	//	    description: Database ID
 	//	    required: true
 	//	    type: string
 	//	  + name: PartID
 	//	    in: path
-	//	    description: attachment part id
+	//	    description: Attachment part ID
 	//	    required: true
 	//	    type: string
 	//

server/apiv1/webui.go

@@ -0,0 +1,57 @@
+package apiv1
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+
+	"github.com/axllent/mailpit/config"
+)
+
+// Response includes global web UI settings
+//
+// swagger:model WebUIConfiguration
+type webUIConfiguration struct {
+	// Message Relay information
+	MessageRelay struct {
+		// Whether message relaying (release) is enabled
+		Enabled bool
+		// The configured SMTP server address
+		SMTPServer string
+		// Enforced Return-Path (if set) for relay bounces
+		ReturnPath string
+		// Allowlist of accepted recipients
+		RecipientAllowlist string
+	}
+}
+
+// WebUIConfig returns configuration settings for the web UI.
+func WebUIConfig(w http.ResponseWriter, r *http.Request) {
+	// swagger:route GET /api/v1/webui application WebUIConfiguration
+	//
+	// # Get web UI configuration
+	//
+	// Returns configuration settings for the web UI.
+	//
+	//	Produces:
+	//	- application/json
+	//
+	//	Schemes: http, https
+	//
+	//	Responses:
+	//		200: WebUIConfigurationResponse
+	//		default: ErrorResponse
+	conf := webUIConfiguration{}
+
+	conf.MessageRelay.Enabled = config.ReleaseEnabled
+	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
+	}
+
+	bytes, _ := json.Marshal(conf)
+
+	w.Header().Add("Content-Type", "application/json")
+	_, _ = w.Write(bytes)
+}

server/server.go

@@ -1,3 +1,4 @@
+// Package server is the HTTP daemon
 package server
 
 import (
@@ -21,6 +22,9 @@ import (
 //go:embed ui
 var embeddedFS embed.FS
 
+// AccessControlAllowOrigin CORS policy
+var AccessControlAllowOrigin string
+
 // Listen will start the httpd
 func Listen() {
 	isReady := &atomic.Value{}
@@ -64,13 +68,12 @@ func Listen() {
 	isReady.Store(true)
 
 	if config.UITLSCert != "" && config.UITLSKey != "" {
-		logger.Log().Infof("[http] starting secure server on https://%s%s", config.HTTPListen, config.Webroot)
+		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))
 	} else {
-		logger.Log().Infof("[http] starting server on http://%s%s", config.HTTPListen, config.Webroot)
+		logger.Log().Infof("[http] starting server on http://%s%s", logger.CleanHTTPIP(config.HTTPListen), config.Webroot)
 		logger.Log().Fatal(http.ListenAndServe(config.HTTPListen, nil))
 	}
-
 }
 
 func defaultRoutes() *mux.Router {
@@ -84,10 +87,15 @@ func defaultRoutes() *mux.Router {
 	r.HandleFunc(config.Webroot+"api/v1/search", middleWareFunc(apiv1.Search)).Methods("GET")
 	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}/raw", middleWareFunc(apiv1.DownloadRaw)).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}", 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")
+
+	// return blank 200 response for OPTIONS requests for CORS
+	r.PathPrefix(config.Webroot + "api/v1/").Handler(middleWareFunc(apiv1.GetOptions)).Methods("OPTIONS")
 
 	return r
 }
@@ -115,6 +123,12 @@ func middleWareFunc(fn http.HandlerFunc) http.HandlerFunc {
 		w.Header().Set("Referrer-Policy", "no-referrer")
 		w.Header().Set("Content-Security-Policy", config.ContentSecurityPolicy)
 
+		if AccessControlAllowOrigin != "" && strings.HasPrefix(r.RequestURI, config.Webroot+"api/") {
+			w.Header().Set("Access-Control-Allow-Origin", AccessControlAllowOrigin)
+			w.Header().Set("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, OPTIONS")
+			w.Header().Set("Access-Control-Allow-Headers", "*")
+		}
+
 		if config.UIAuthFile != "" {
 			user, pass, ok := r.BasicAuth()
 
@@ -148,6 +162,12 @@ func middlewareHandler(h http.Handler) http.Handler {
 		w.Header().Set("Referrer-Policy", "no-referrer")
 		w.Header().Set("Content-Security-Policy", config.ContentSecurityPolicy)
 
+		if AccessControlAllowOrigin != "" && strings.HasPrefix(r.RequestURI, config.Webroot+"api/") {
+			w.Header().Set("Access-Control-Allow-Origin", AccessControlAllowOrigin)
+			w.Header().Set("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, OPTIONS")
+			w.Header().Set("Access-Control-Allow-Headers", "*")
+		}
+
 		if config.UIAuthFile != "" {
 			user, pass, ok := r.BasicAuth()
 

server/server_test.go

@@ -14,6 +14,7 @@ import (
 	"github.com/axllent/mailpit/config"
 	"github.com/axllent/mailpit/server/apiv1"
 	"github.com/axllent/mailpit/storage"
+	"github.com/axllent/mailpit/utils/logger"
 	"github.com/jhillyerd/enmime"
 )
 
@@ -150,7 +151,7 @@ func Test_APIv1(t *testing.T) {
 }
 
 func setup() {
-	config.NoLogging = true
+	logger.NoLogging = true
 	config.MaxMessages = 0
 	config.DataFile = ""
 

server/smtpd/smtp.go

@@ -0,0 +1,139 @@
+package smtpd
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net/mail"
+	"net/smtp"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/utils/logger"
+)
+
+func allowedRecipients(to []string) []string {
+	if config.SMTPRelayConfig.RecipientAllowlistRegexp == nil {
+		return to
+	}
+
+	var ar []string
+
+	for _, recipient := range to {
+		address, err := mail.ParseAddress(recipient)
+
+		if err != nil {
+			logger.Log().Warnf("ignoring invalid email address: %s", recipient)
+			continue
+		}
+
+		if !config.SMTPRelayConfig.RecipientAllowlistRegexp.MatchString(address.Address) {
+			logger.Log().Debugf("[smtp] not allowed to relay to %s: does not match the allowlist %s", recipient, config.SMTPRelayConfig.RecipientAllowlist)
+		} else {
+			ar = append(ar, recipient)
+		}
+	}
+
+	return ar
+}
+
+// Send will connect to a pre-configured SMTP server and send a message to one or more recipients.
+func Send(from string, to []string, msg []byte) error {
+	recipients := allowedRecipients(to)
+
+	if len(recipients) == 0 {
+		return errors.New("no valid recipients")
+	}
+
+	addr := fmt.Sprintf("%s:%d", config.SMTPRelayConfig.Host, config.SMTPRelayConfig.Port)
+
+	c, err := smtp.Dial(addr)
+	if err != nil {
+		return fmt.Errorf("error connecting to %s: %s", addr, err.Error())
+	}
+
+	defer c.Close()
+
+	if config.SMTPRelayConfig.STARTTLS {
+		conf := &tls.Config{ServerName: config.SMTPRelayConfig.Host}
+
+		conf.InsecureSkipVerify = config.SMTPRelayConfig.AllowInsecure
+
+		if err = c.StartTLS(conf); err != nil {
+			return fmt.Errorf("error creating StartTLS config: %s", err.Error())
+		}
+	}
+
+	var a smtp.Auth
+
+	if config.SMTPRelayConfig.Auth == "plain" {
+		a = smtp.PlainAuth("", config.SMTPRelayConfig.Username, config.SMTPRelayConfig.Password, config.SMTPRelayConfig.Host)
+	}
+
+	if config.SMTPRelayConfig.Auth == "login" {
+		a = LoginAuth(config.SMTPRelayConfig.Username, config.SMTPRelayConfig.Password)
+	}
+
+	if config.SMTPRelayConfig.Auth == "cram-md5" {
+		a = smtp.CRAMMD5Auth(config.SMTPRelayConfig.Username, config.SMTPRelayConfig.Secret)
+	}
+
+	if a != nil {
+		if err = c.Auth(a); err != nil {
+			return fmt.Errorf("error authenticating: %s", err.Error())
+		}
+	}
+	if err = c.Mail(from); err != nil {
+		return fmt.Errorf("error response to MAIL command: %s", err.Error())
+	}
+
+	for _, addr := range recipients {
+		if err = c.Rcpt(addr); err != nil {
+			return fmt.Errorf("error response to RCPT command for %s: %s", addr, err.Error())
+		}
+	}
+
+	w, err := c.Data()
+	if err != nil {
+		return fmt.Errorf("error response to DATA command: %s", err.Error())
+	}
+
+	if _, err := w.Write(msg); err != nil {
+		return fmt.Errorf("error sending message: %s", err.Error())
+	}
+
+	if err := w.Close(); err != nil {
+		return fmt.Errorf("error closing connection: %s", err.Error())
+	}
+
+	return c.Quit()
+}
+
+// Custom implementation of LOGIN SMTP authentication
+// @see https://gist.github.com/andelf/5118732
+type loginAuth struct {
+	username, password string
+}
+
+// LoginAuth authentication
+func LoginAuth(username, password string) smtp.Auth {
+	return &loginAuth{username, password}
+}
+
+func (a *loginAuth) Start(server *smtp.ServerInfo) (string, []byte, error) {
+	return "LOGIN", []byte{}, nil
+}
+
+func (a *loginAuth) Next(fromServer []byte, more bool) ([]byte, error) {
+	if more {
+		switch string(fromServer) {
+		case "Username:":
+			return []byte(a.username), nil
+		case "Password:":
+			return []byte(a.password), nil
+		default:
+			return nil, errors.New("Unknown fromServer")
+		}
+	}
+
+	return nil, nil
+}

server/smtpd/smtpd.go

@@ -3,6 +3,7 @@ package smtpd
 
 import (
 	"bytes"
+	"fmt"
 	"net"
 	"net/mail"
 	"regexp"
@@ -12,46 +13,109 @@ import (
 	"github.com/axllent/mailpit/storage"
 	"github.com/axllent/mailpit/utils/logger"
 	"github.com/mhale/smtpd"
+	uuid "github.com/satori/go.uuid"
 )
 
 func mailHandler(origin net.Addr, from string, to []string, data []byte) error {
 	msg, err := mail.ReadMessage(bytes.NewReader(data))
 	if err != nil {
-		logger.Log().Errorf("error parsing message: %s", err.Error())
+		logger.Log().Errorf("[smtpd] error parsing message: %s", err.Error())
+
 		return err
 	}
 
-	if _, err := storage.Store(data); err != nil {
-		// Value with size 4800709 exceeded 1048576 limit
-		re := regexp.MustCompile(`(Value with size \d+ exceeded \d+ limit)`)
-		tooLarge := re.FindStringSubmatch(err.Error())
-		if len(tooLarge) > 0 {
-			logger.Log().Errorf("[db] error storing message: %s", tooLarge[0])
-		} else {
-			logger.Log().Errorf("[db] error storing message")
-			logger.Log().Errorf(err.Error())
+	messageID := strings.Trim(msg.Header.Get("Message-Id"), "<>")
+
+	// add a message ID if not set
+	if messageID == "" {
+		// generate unique ID
+		messageID = uuid.NewV4().String() + "@mailpit"
+		// add unique ID
+		data = append([]byte("Message-Id: <"+messageID+">\r\n"), data...)
+	} else if config.IgnoreDuplicateIDs {
+		if storage.MessageIDExists(messageID) {
+			logger.Log().Debugf("[smtpd] duplicate message found, ignoring %s", messageID)
+			return nil
 		}
+	}
+
+	// if enabled, this will route the email 1:1 through to the preconfigured smtp server
+	if config.SMTPRelayAllIncoming {
+		if err := Send(from, to, data); err != nil {
+			logger.Log().Warnf("[smtp] error relaying message: %s", err.Error())
+		} else {
+			logger.Log().Debugf("[smtp] relayed message from %s via %s:%d", from, config.SMTPRelayConfig.Host, config.SMTPRelayConfig.Port)
+		}
+	}
+
+	// build array of all addresses in the header to compare to the []to array
+	emails, hasBccHeader := scanAddressesInHeader(msg.Header)
+
+	missingAddresses := []string{}
+	for _, a := range to {
+		// loop through passed email addresses to check if they are in the headers
+		if _, err := mail.ParseAddress(a); err == nil {
+			_, ok := emails[strings.ToLower(a)]
+			if !ok {
+				missingAddresses = append(missingAddresses, a)
+			}
+		} else {
+			logger.Log().Warnf("[smtpd] ignoring invalid email address: %s", a)
+		}
+	}
+
+	// add missing email addresses to Bcc (eg: Laravel doesn't include these in the headers)
+	if len(missingAddresses) > 0 {
+		if hasBccHeader {
+			// email already has Bcc header, add to existing addresses
+			re := regexp.MustCompile(`(?i)(^|\n)(Bcc: )`)
+			replaced := false
+			data = re.ReplaceAllFunc(data, func(r []byte) []byte {
+				if replaced {
+					return r
+				}
+				replaced = true // only replace first occurence
+
+				return re.ReplaceAll(r, []byte("${1}Bcc: "+strings.Join(missingAddresses, ", ")+", "))
+			})
+
+		} else {
+			// prepend new Bcc header
+			bcc := []byte(fmt.Sprintf("Bcc: %s\r\n", strings.Join(missingAddresses, ", ")))
+			data = append(bcc, data...)
+		}
+
+		logger.Log().Debugf("[smtpd] added missing addresses to Bcc header: %s", strings.Join(missingAddresses, ", "))
+	}
+
+	_, err = storage.Store(data)
+	if err != nil {
+		logger.Log().Errorf("[db] error storing message: %s", err.Error())
+
 		return err
 	}
 
 	subject := msg.Header.Get("Subject")
-	logger.Log().Debugf("[smtp] received (%s) from:%s to:%s subject:%q", cleanIP(origin), from, to[0], subject)
+	logger.Log().Debugf("[smtpd] received (%s) from:%s subject:%q", cleanIP(origin), from, subject)
+
 	return nil
 }
 
 func authHandler(remoteAddr net.Addr, mechanism string, username []byte, password []byte, shared []byte) (bool, error) {
-	allow := config.SMTPAuth.Match(string(username), string(password))
+	allow := config.SMTPAuthConfig.Match(string(username), string(password))
 	if allow {
-		logger.Log().Debugf("[smtp] allow %s login:%q from:%s", mechanism, string(username), cleanIP(remoteAddr))
+		logger.Log().Debugf("[smtpd] allow %s login:%q from:%s", mechanism, string(username), cleanIP(remoteAddr))
 	} else {
-		logger.Log().Warnf("[smtp] deny %s login:%q from:%s", mechanism, string(username), cleanIP(remoteAddr))
+		logger.Log().Warnf("[smtpd] deny %s login:%q from:%s", mechanism, string(username), cleanIP(remoteAddr))
 	}
+
 	return allow, nil
 }
 
 // Allow any username and password
 func authHandlerAny(remoteAddr net.Addr, mechanism string, username []byte, password []byte, shared []byte) (bool, error) {
-	logger.Log().Debugf("[smtp] allow %s login %q from %s", mechanism, string(username), cleanIP(remoteAddr))
+	logger.Log().Debugf("[smtpd] allow %s login %q from %s", mechanism, string(username), cleanIP(remoteAddr))
+
 	return true, nil
 }
 
@@ -59,19 +123,19 @@ func authHandlerAny(remoteAddr net.Addr, mechanism string, username []byte, pass
 func Listen() error {
 	if config.SMTPAuthAllowInsecure {
 		if config.SMTPAuthFile != "" {
-			logger.Log().Infof("[smtp] enabling login auth via %s (insecure)", config.SMTPAuthFile)
+			logger.Log().Infof("[smtpd] enabling login auth via %s (insecure)", config.SMTPAuthFile)
 		} else if config.SMTPAuthAcceptAny {
-			logger.Log().Info("[smtp] enabling all auth (insecure)")
+			logger.Log().Info("[smtpd] enabling all auth (insecure)")
 		}
 	} else {
 		if config.SMTPAuthFile != "" {
-			logger.Log().Infof("[smtp] enabling login auth via %s (TLS)", config.SMTPAuthFile)
+			logger.Log().Infof("[smtpd] enabling login auth via %s (TLS)", config.SMTPAuthFile)
 		} else if config.SMTPAuthAcceptAny {
-			logger.Log().Info("[smtp] enabling any auth (TLS)")
+			logger.Log().Info("[smtpd] enabling any auth (TLS)")
 		}
 	}
 
-	logger.Log().Infof("[smtp] starting on %s", config.SMTPListen)
+	logger.Log().Infof("[smtpd] starting on %s", logger.CleanIP(config.SMTPListen))
 
 	return listenAndServe(config.SMTPListen, mailHandler, authHandler)
 }
@@ -113,3 +177,33 @@ func cleanIP(i net.Addr) string {
 
 	return parts[0]
 }
+
+// Returns a list of all lowercased emails found in To, Cc and Bcc,
+// as well as whether there is a Bcc field
+func scanAddressesInHeader(h mail.Header) (map[string]bool, bool) {
+	emails := make(map[string]bool)
+	hasBccHeader := false
+
+	if recipients, err := h.AddressList("To"); err == nil {
+		for _, r := range recipients {
+			emails[strings.ToLower(r.Address)] = true
+		}
+	}
+
+	if recipients, err := h.AddressList("Cc"); err == nil {
+		for _, r := range recipients {
+			emails[strings.ToLower(r.Address)] = true
+		}
+	}
+
+	recipients, err := h.AddressList("Bcc")
+	if err == nil {
+		for _, r := range recipients {
+			emails[strings.ToLower(r.Address)] = true
+		}
+
+		hasBccHeader = true
+	}
+
+	return emails, hasBccHeader
+}

server/ui-src/App.vue

@@ -1,16 +1,20 @@
 <script>
-import commonMixins from './mixins.js';
-import Message from './templates/Message.vue';
-import MessageSummary from './templates/MessageSummary.vue';
-import moment from 'moment';
-import Tinycon from 'tinycon';
+import commonMixins from './mixins.js'
+import Message from './templates/Message.vue'
+import MessageSummary from './templates/MessageSummary.vue'
+import MessageRelease from './templates/MessageRelease.vue'
+import MessageToast from './templates/MessageToast.vue'
+import moment from 'moment'
+import Tinycon from 'tinycon'
 
 export default {
 	mixins: [commonMixins],
 
 	components: {
 		Message,
-		MessageSummary
+		MessageSummary,
+		MessageRelease,
+		MessageToast
 	},
 
 	data() {
@@ -36,7 +40,10 @@ export default {
 			selected: [],
 			tcStatus: 0,
 			appInfo: false,
-			lastLoaded: false
+			lastLoaded: false,
+			relayConfig: {},
+			releaseAddresses: false,
+			toastMessage: false,
 		}
 	},
 
@@ -67,6 +74,13 @@ export default {
 		},
 		canNext: function () {
 			return this.total > (this.start + this.count);
+		},
+		unreadInSearch: function () {
+			if (!this.searching) {
+				return false;
+			}
+
+			return this.items.filter(i => !i.Read).length;
 		}
 	},
 
@@ -76,7 +90,7 @@ export default {
 			this.currentPath = window.location.hash.slice(1);
 		});
 
-		this.notificationsSupported = 'https:' == document.location.protocol
+		this.notificationsSupported = window.isSecureContext
 			&& ("Notification" in window && Notification.permission !== "denied");
 		this.notificationsEnabled = this.notificationsSupported && Notification.permission == "granted";
 
@@ -86,7 +100,29 @@ export default {
 			fallback: false
 		});
 
+		moment.updateLocale('en', {
+			relativeTime: {
+				future: "in %s",
+				past: "%s ago",
+				s: 'seconds',
+				ss: '%d secs',
+				m: "a minute",
+				mm: "%d mins",
+				h: "an hour",
+				hh: "%d hours",
+				d: "a day",
+				dd: "%d days",
+				w: "a week",
+				ww: "%d weeks",
+				M: "a month",
+				MM: "%d months",
+				y: "a year",
+				yy: "%d years"
+			}
+		});
+
 		this.connect();
+		this.getUISettings();
 		this.loadMessages();
 	},
 
@@ -147,6 +183,13 @@ export default {
 			});
 		},
 
+		getUISettings: function () {
+			let self = this;
+			self.get('api/v1/webui', null, function (response) {
+				self.relayConfig = response.data;
+			});
+		},
+
 		doSearch: function (e) {
 			e.preventDefault();
 			this.loadMessages();
@@ -192,11 +235,12 @@ export default {
 		openMessage: function (id) {
 			let self = this;
 			self.selected = [];
+			self.releaseAddresses = false;
+			self.toastMessage = false;
 			self.existingTags = JSON.parse(JSON.stringify(self.tags));
 
 			let uri = 'api/v1/message/' + self.currentPath
 			self.get(uri, false, function (response) {
-
 				for (let i in self.items) {
 					if (self.items[i].ID == self.currentPath) {
 						if (!self.items[i].Read) {
@@ -205,51 +249,56 @@ export default {
 						}
 					}
 				}
+
 				let d = response.data;
-				// replace inline images
+
+				// replace inline images embedded as inline attachments
 				if (d.HTML && d.Inline) {
 					for (let i in d.Inline) {
 						let a = d.Inline[i];
 						if (a.ContentID != '') {
 							d.HTML = d.HTML.replace(
-								new RegExp('cid:' + a.ContentID, 'g'),
-								window.location.origin + window.location.pathname + 'api/v1/message/' + d.ID + '/part/' + a.PartID
+								new RegExp('(=["\']?)(cid:' + a.ContentID + ')(["|\'|\\s|\\/|>|;])', 'g'),
+								'$1' + window.location.origin + window.location.pathname + 'api/v1/message/' + d.ID + '/part/' + a.PartID + '$3'
 							);
 						}
 						if (a.FileName.match(/^[a-zA-Z0-9\_\-\.]+$/)) {
 							// some old email clients use the filename
 							d.HTML = d.HTML.replace(
-								new RegExp('src=(\'|")' + a.FileName + '(\'|")', 'g'),
-								'src="' + window.location.origin + window.location.pathname + 'api/v1/message/' + d.ID + '/part/' + a.PartID + '"'
+								new RegExp('(=["\']?)(' + a.FileName + ')(["|\'|\\s|\\/|>|;])', 'g'),
+								'$1' + window.location.origin + window.location.pathname + 'api/v1/message/' + d.ID + '/part/' + a.PartID + '$3'
 							);
 						}
 					}
 				}
-				// replace inline images
+
+				// replace inline images embedded as regular attachments
 				if (d.HTML && d.Attachments) {
 					for (let i in d.Attachments) {
 						let a = d.Attachments[i];
 						if (a.ContentID != '') {
 							d.HTML = d.HTML.replace(
-								new RegExp('cid:' + a.ContentID, 'g'),
-								window.location.origin + window.location.pathname + 'api/v1/message/' + d.ID + '/part/' + a.PartID
+								new RegExp('(=["\']?)(cid:' + a.ContentID + ')(["|\'|\\s|\\/|>|;])', 'g'),
+								'$1' + window.location.origin + window.location.pathname + 'api/v1/message/' + d.ID + '/part/' + a.PartID + '$3'
 							);
 						}
 						if (a.FileName.match(/^[a-zA-Z0-9\_\-\.]+$/)) {
 							// some old email clients use the filename
 							d.HTML = d.HTML.replace(
-								new RegExp('src=(\'|")' + a.FileName + '(\'|")', 'g'),
-								'src="' + window.location.origin + window.location.pathname + 'api/v1/message/' + d.ID + '/part/' + a.PartID + '"'
+								new RegExp('(=["\']?)(' + a.FileName + ')(["|\'|\\s|\\/|>|;])', 'g'),
+								'$1' + window.location.origin + window.location.pathname + 'api/v1/message/' + d.ID + '/part/' + a.PartID + '$3'
 							);
 						}
 					}
 				}
 
 				self.message = d;
+
 				// generate the prev/next links based on current message list
 				self.messagePrev = false;
 				self.messageNext = false;
 				let found = false;
+
 				for (let i in self.items) {
 					if (self.items[i].ID == self.message.ID) {
 						found = true;
@@ -283,6 +332,24 @@ export default {
 			});
 		},
 
+		// delete messages displayed in current search
+		deleteSearch: function () {
+			let ids = this.items.map(item => item.ID);
+
+			if (!ids.length) {
+				return false;
+			}
+
+			let self = this;
+			let uri = 'api/v1/messages';
+			self.delete(uri, { 'ids': ids }, function (response) {
+				window.location.hash = "";
+				self.scrollInPlace = true;
+				self.loadMessages();
+			});
+		},
+
+		// delete all messages from mailbox
 		deleteAll: function () {
 			let self = this;
 			let uri = 'api/v1/messages';
@@ -292,6 +359,7 @@ export default {
 			});
 		},
 
+		// mark current message as read
 		markUnread: function () {
 			let self = this;
 			if (!self.message) {
@@ -305,6 +373,7 @@ export default {
 			});
 		},
 
+		// mark all messages in mailbox as read
 		markAllRead: function () {
 			let self = this;
 			let uri = 'api/v1/messages'
@@ -315,6 +384,24 @@ export default {
 			});
 		},
 
+		// mark messages in current search as read
+		markSearchRead: function () {
+			let ids = this.items.map(item => item.ID);
+
+			if (!ids.length) {
+				return false;
+			}
+
+			let self = this;
+			let uri = 'api/v1/messages';
+			self.put(uri, { 'read': true, 'ids': ids }, function (response) {
+				window.location.hash = "";
+				self.scrollInPlace = true;
+				self.loadMessages();
+			});
+		},
+
+		// mark selected messages as read
 		markSelectedRead: function () {
 			let self = this;
 			if (!self.selected.length) {
@@ -328,6 +415,7 @@ export default {
 			});
 		},
 
+		// mark selected messages as unread
 		markSelectedUnread: function () {
 			let self = this;
 			if (!self.selected.length) {
@@ -341,7 +429,7 @@ export default {
 			});
 		},
 
-		// test of any selected emails are unread
+		// test if any selected emails are unread
 		selectedHasUnread: function () {
 			if (!this.selected.length) {
 				return false;
@@ -383,10 +471,16 @@ export default {
 				if (response.Type == "new" && response.Data) {
 					if (!self.searching) {
 						if (self.start < 1) {
+							// first page
 							self.items.unshift(response.Data);
 							if (self.items.length > self.limit) {
 								self.items.pop();
 							}
+
+							// first message was open, set messagePrev
+							if (!self.messagePrev) {
+								self.messagePrev = response.Data.ID;
+							}
 						} else {
 							self.start++;
 						}
@@ -403,6 +497,7 @@ export default {
 
 					let from = response.Data.From != null ? response.Data.From.Address : '[unknown]';
 					self.browserNotify("New mail from: " + from, response.Data.Subject);
+					self.setMessageToast(response.Data);
 				} else if (response.Type == "prune") {
 					// messages have been deleted, reload messages to adjust
 					self.scrollInPlace = true;
@@ -550,6 +645,47 @@ export default {
 			dl.target = '_blank';
 			dl.download = this.message.ID + '.' + ext;
 			dl.click();
+		},
+
+		initReleaseModal: function () {
+			this.releaseAddresses = false;
+			let addresses = [];
+			for (let i in this.message.To) {
+				addresses.push(this.message.To[i].Address)
+			}
+			for (let i in this.message.Cc) {
+				addresses.push(this.message.Cc[i].Address)
+			}
+			for (let i in this.message.Bcc) {
+				addresses.push(this.message.Bcc[i].Address)
+			}
+
+			// include only unique email addresses, regardless of casing
+			let uAddresses = new Map(addresses.map(a => [a.toLowerCase(), a]));
+			this.releaseAddresses = [...uAddresses.values()];
+
+			let self = this;
+			window.setTimeout(function () {
+				// delay to allow elements to load
+				self.modal('ReleaseModal').show();
+
+				window.setTimeout(function () {
+					document.querySelector('#ReleaseModal input[role="combobox"]').focus()
+				}, 500);
+			}, 300);
+		},
+
+		setMessageToast: function (m) {
+			// don't display if browser notifications are enabled, or a toast is already displayed
+			if (this.notificationsEnabled || this.toastMessage) {
+				return;
+			}
+
+			this.toastMessage = m;
+		},
+
+		clearMessageToast: function () {
+			this.toastMessage = false;
 		}
 	}
 }
@@ -572,6 +708,10 @@ export default {
 			<button class="btn btn-outline-light me-2" title="Mark unread" v-on:click="markUnread">
 				<i class="bi bi-eye-slash"></i> <span class="d-none d-md-inline">Mark unread</span>
 			</button>
+			<button class="btn btn-outline-light me-2" title="Release message"
+				v-if="relayConfig.MessageRelay && relayConfig.MessageRelay.Enabled" v-on:click="initReleaseModal">
+				<i class="bi bi-send"></i> <span class="d-none d-md-inline">Release</span>
+			</button>
 			<button class="btn btn-outline-light me-2" title="Delete message" v-on:click="deleteMessages">
 				<i class="bi bi-trash-fill"></i> <span class="d-none d-md-inline">Delete</span>
 			</button>
@@ -636,7 +776,8 @@ export default {
 						<span v-if="!total" class="ms-2">Mailpit</span>
 					</a>
 					<div v-if="total" class="ms-md-2 d-flex bg-white border rounded-start flex-fill position-relative">
-						<input type="text" class="form-control border-0" v-model.trim="search" placeholder="Search mailbox">
+						<input type="text" class="form-control border-0" aria-label="Search" v-model.trim="search"
+							placeholder="Search mailbox">
 						<span class="btn btn-link position-absolute end-0 text-muted" v-if="search"
 							v-on:click="resetSearch"><i class="bi bi-x-circle"></i></span>
 					</div>
@@ -647,13 +788,22 @@ export default {
 			</form>
 		</div>
 		<div class="col-12 col-lg-5 text-end mt-2 mt-lg-0" v-if="!message && total">
-			<button v-if="total" class="btn btn-danger float-start d-md-none me-2" data-bs-toggle="modal"
-				data-bs-target="#DeleteAllModal" title="Delete all messages">
+			<button v-if="searching && items.length" class="btn btn-danger float-start d-md-none me-2"
+				data-bs-toggle="modal" data-bs-target="#DeleteSearchModal" :disabled="!items" title="Delete results">
+				<i class="bi bi-trash-fill"></i>
+			</button>
+			<button v-else class="btn btn-danger float-start d-md-none me-2" data-bs-toggle="modal"
+				data-bs-target="#DeleteAllModal" :disabled="!total || searching" title="Delete all messages">
 				<i class="bi bi-trash-fill"></i>
 			</button>
 
-			<button v-if="unread" class="btn btn-light float-start d-md-none" data-bs-toggle="modal"
-				data-bs-target="#MarkAllReadModal" title="Mark all read">
+			<button v-if="searching && items.length" class="btn btn-light float-start d-md-none" data-bs-toggle="modal"
+				data-bs-target="#MarkSearchReadModal" :disabled="!unreadInSearch"
+				:title="'Mark ' + formatNumber(unreadInSearch) + ' read'">
+				<i class="bi bi-check2-square"></i>
+			</button>
+			<button v-else class="btn btn-light float-start d-md-none" data-bs-toggle="modal"
+				data-bs-target="#MarkAllReadModal" :disabled="!unread || searching">
 				<i class="bi bi-check2-square"></i>
 			</button>
 
@@ -693,10 +843,10 @@ export default {
 					class="list-group-item list-group-item-action" :class="!searching && !message ? 'active' : ''">
 					<template v-if="isConnected">
 						<i class="bi bi-envelope-fill me-1" v-if="!searching && !message"></i>
-						<i class="bi bi-arrow-return-left" v-else></i>
+						<i class="bi bi-arrow-return-left me-1" v-else></i>
 					</template>
 					<i class="bi bi-arrow-clockwise me-1" v-else></i>
-					<span v-if="message" class="ms-1">Return</span>
+					<span v-if="message" class="ms-1 me-1">Return</span>
 					<span v-else class="ms-1">Inbox</span>
 					<span class="badge rounded-pill ms-1 float-end text-bg-secondary" title="Unread messages">
 						{{ formatNumber(unread) }}
@@ -704,38 +854,49 @@ export default {
 				</a>
 
 				<template v-if="!message && !selected.length">
-					<button class="list-group-item list-group-item-action" data-bs-toggle="modal"
+					<button v-if="searching && items.length" class="list-group-item list-group-item-action"
+						data-bs-toggle="modal" data-bs-target="#MarkSearchReadModal" :disabled="!unreadInSearch">
+						<i class="bi bi-eye-fill me-1"></i>
+						Mark {{ formatNumber(unreadInSearch) }} read
+					</button>
+					<button v-else class="list-group-item list-group-item-action" data-bs-toggle="modal"
 						data-bs-target="#MarkAllReadModal" :disabled="!unread || searching">
-						<i class="bi bi-eye-fill"></i>
+						<i class="bi bi-eye-fill me-1"></i>
 						Mark all read
 					</button>
 
-					<button class="list-group-item list-group-item-action" data-bs-toggle="modal"
+					<button v-if="searching && items.length" class="list-group-item list-group-item-action"
+						data-bs-toggle="modal" data-bs-target="#DeleteSearchModal" :disabled="!items">
+						<i class="bi bi-trash-fill me-1 text-danger"></i>
+						Delete {{ formatNumber(items.length) }} message<span v-if="items.length > 1">s</span>
+					</button>
+					<button v-else class="list-group-item list-group-item-action" data-bs-toggle="modal"
 						data-bs-target="#DeleteAllModal" :disabled="!total || searching">
 						<i class="bi bi-trash-fill me-1 text-danger"></i>
 						Delete all
 					</button>
+
 					<button class="list-group-item list-group-item-action" data-bs-toggle="modal"
 						data-bs-target="#EnableNotificationsModal"
 						v-if="isConnected && notificationsSupported && !notificationsEnabled">
-						<i class="bi bi-bell"></i>
+						<i class="bi bi-bell me-1"></i>
 						Enable alerts
 					</button>
 				</template>
 				<template v-if="!message && selected.length">
 					<button class="list-group-item list-group-item-action" :disabled="!selectedHasUnread()"
 						v-on:click="markSelectedRead">
-						<i class="bi bi-eye-fill"></i>
+						<i class="bi bi-eye-fill me-1"></i>
 						Mark read
 					</button>
 					<button class="list-group-item list-group-item-action" :disabled="!selectedHasRead()"
 						v-on:click="markSelectedUnread">
-						<i class="bi bi-eye-slash"></i>
+						<i class="bi bi-eye-slash me-1"></i>
 						Mark unread
 					</button>
 					<button class="list-group-item list-group-item-action" v-on:click="deleteMessages">
 						<i class="bi bi-trash-fill me-1 text-danger"></i>
-						Delete
+						Delete selected
 					</button>
 					<button class="list-group-item list-group-item-action" v-on:click="selected = []">
 						<i class="bi bi-x-circle me-1"></i>
@@ -745,9 +906,23 @@ export default {
 			</div>
 
 			<template v-if="!selected.length && tags.length && !message">
-				<h6 class="mt-4 text-muted"><small>Tags</small></h6>
-				<div class="list-group mt-2 mb-5">
-					<button class="list-group-item list-group-item-action" v-for="tag in tags"
+				<div class="mt-4 text-muted">
+					<button class="btn btn-sm dropdown-toggle ms-n1" data-bs-toggle="dropdown" aria-expanded="false">
+						Tags
+					</button>
+					<ul class="dropdown-menu dropdown-menu-end">
+						<li>
+							<button class="dropdown-item" @click="toggleTagColors()">
+								<template v-if="showTagColors">Hide</template>
+								<template v-else>Show</template>
+								tag colors
+							</button>
+						</li>
+					</ul>
+				</div>
+				<div class="list-group mt-1 mb-5">
+					<button class="list-group-item list-group-item-action small px-2" v-for="tag in tags"
+						:style="showTagColors ? { borderLeftColor: colorHash(tag), borderLeftWidth: '4px' } : ''"
 						v-on:click="tagSearch($event, tag)" :class="inSearch(tag) ? 'active' : ''">
 						<i class="bi bi-tag-fill" v-if="inSearch(tag)"></i>
 						<i class="bi bi-tag" v-else></i>
@@ -758,7 +933,7 @@ export default {
 
 			<MessageSummary v-if="message" :message="message"></MessageSummary>
 
-			<div class="position-fixed bottom-0 bg-white py-2 text-muted w-100">
+			<div class="position-fixed bottom-0 bg-white py-2 text-muted small w-100">
 				<a href="#" class="text-muted" v-on:click="loadInfo">
 					<i class="bi bi-info-circle-fill"></i>
 					About
@@ -766,13 +941,13 @@ export default {
 			</div>
 		</div>
 
-		<div class="col-lg-10 col-md-9 mh-100 pe-0">
+		<div class="col-lg-10 col-md-9 mh-100 ps-0 ps-md-2 pe-0">
 			<div class="mh-100" style="overflow-y: auto;" :class="message ? 'd-none' : ''" id="message-page">
 				<div class="list-group my-2" v-if="items.length">
-					<a v-for="message in items" :href="'#' + message.ID"
+					<a v-for="message in items" :href="'#' + message.ID" :key="message.ID"
 						v-on:click.ctrl="toggleSelected($event, message.ID)"
 						v-on:click.shift="selectRange($event, message.ID)"
-						class="row message d-flex small list-group-item list-group-item-action border-start-0 border-end-0"
+						class="row gx-1 message d-flex small list-group-item list-group-item-action border-start-0 border-end-0"
 						:class="message.Read ? 'read' : '', isSelected(message.ID) ? 'selected' : ''">
 						<div class="col-lg-3">
 							<div class="d-lg-none float-end text-muted text-nowrap small">
@@ -798,18 +973,21 @@ export default {
 								</span>
 							</div>
 						</div>
-						<div class="col-lg-6 mt-2 mt-lg-0">
-							<span class="badge text-bg-secondary me-1" v-for="t in message.Tags"
-								:title="'Filter messages tagged with ' + t" v-on:click="tagSearch($event, t)">
-								{{ t }}
-							</span>
-							<b>{{ message.Subject != "" ? message.Subject : "[ no subject ]" }}</b>
+						<div class="col-lg-6 col-xxl-7 mt-2 mt-lg-0">
+							<div><b>{{ message.Subject != "" ? message.Subject : "[ no subject ]" }}</b></div>
+							<div>
+								<span class="badge me-1" v-for="t in message.Tags"
+									:style="showTagColors ? { backgroundColor: colorHash(t) } : { backgroundColor: '#6c757d' }"
+									:title="'Filter messages tagged with ' + t" v-on:click="tagSearch($event, t)">
+									{{ t }}
+								</span>
+							</div>
 						</div>
 						<div class="d-none d-lg-block col-1 small text-end text-muted">
 							<i class="bi bi-paperclip float-start h6" v-if="message.Attachments"></i>
 							{{ getFileSize(message.Size) }}
 						</div>
-						<div class="d-none d-lg-block col-2 small text-end text-muted">
+						<div class="d-none d-lg-block col-2 col-xxl-1 small text-end text-muted">
 							{{ getRelativeCreated(message) }}
 						</div>
 					</a>
@@ -856,6 +1034,29 @@ export default {
 		</div>
 	</div>
 
+	<!-- Modal -->
+	<div class="modal fade" id="DeleteSearchModal" tabindex="-1" aria-labelledby="DeleteSearchModalLabel"
+		aria-hidden="true">
+		<div class="modal-dialog">
+			<div class="modal-content">
+				<div class="modal-header">
+					<h5 class="modal-title" id="DeleteSearchModalLabel">
+						Delete {{ formatNumber(items.length) }} search result<span v-if="items.length > 1">s</span>?
+					</h5>
+					<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+				</div>
+				<div class="modal-body">
+					This will permanently delete {{ formatNumber(items.length) }} message<span v-if="total > 1">s</span>.
+				</div>
+				<div class="modal-footer">
+					<button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
+					<button type="button" class="btn btn-danger" data-bs-dismiss="modal"
+						v-on:click="deleteSearch">Delete</button>
+				</div>
+			</div>
+		</div>
+	</div>
+
 	<!-- Modal -->
 	<div class="modal fade" id="MarkAllReadModal" tabindex="-1" aria-labelledby="MarkAllReadModalLabel" aria-hidden="true">
 		<div class="modal-dialog">
@@ -876,6 +1077,30 @@ export default {
 		</div>
 	</div>
 
+	<!-- Modal -->
+	<div class="modal fade" id="MarkSearchReadModal" tabindex="-1" aria-labelledby="MarkSearchReadModalLabel"
+		aria-hidden="true">
+		<div class="modal-dialog">
+			<div class="modal-content">
+				<div class="modal-header">
+					<h5 class="modal-title" id="MarkSearchReadModalLabel">
+						Mark {{ formatNumber(unreadInSearch) }} search result<span v-if="unreadInSearch > 1">s</span> as
+						read?
+					</h5>
+					<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+				</div>
+				<div class="modal-body">
+					This will mark {{ formatNumber(unreadInSearch) }} message<span v-if="unread > 1">s</span> as read.
+				</div>
+				<div class="modal-footer">
+					<button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
+					<button type="button" class="btn btn-success" data-bs-dismiss="modal"
+						v-on:click="markSearchRead">Confirm</button>
+				</div>
+			</div>
+		</div>
+	</div>
+
 	<!-- Modal -->
 	<div class="modal fade" id="EnableNotificationsModal" tabindex="-1" aria-labelledby="EnableNotificationsModalLabel"
 		aria-hidden="true">
@@ -963,4 +1188,12 @@ export default {
 			</div>
 		</div>
 	</div>
+
+	<!-- Modal -->
+	<div class="modal fade" id="ReleaseModal" tabindex="-1" aria-labelledby="AppInfoModalLabel" aria-hidden="true">
+		<MessageRelease v-if="releaseAddresses" :message="message" :relayConfig="relayConfig"
+			:releaseAddresses="releaseAddresses"></MessageRelease>
+	</div>
+
+	<MessageToast v-if="toastMessage" :message="toastMessage" @clearMessageToast="clearMessageToast"></MessageToast>
 </template>

server/ui-src/assets/_bootstrap_variables.scss

@@ -1,3 +1,8 @@
+// Removed "Noto Color Emoji" from list re: https://github.com/axllent/mailpit/issues/92
+$font-family-sans-serif: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans",
+    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
+
 $link-decoration: none;
 $primary: #2c3e50;
 $list-group-disabled-color: #adb5bd;
+$enable-negative-margins: true;

server/ui-src/assets/bootstrap.scss

@@ -4,6 +4,7 @@
 // Configuration
 @import "../../../node_modules/bootstrap/scss/functions";
 @import "../../../node_modules/bootstrap/scss/variables";
+@import "../../../node_modules/bootstrap/scss/variables-dark";
 @import "../../../node_modules/bootstrap/scss/maps";
 @import "../../../node_modules/bootstrap/scss/mixins";
 @import "../../../node_modules/bootstrap/scss/utilities";
@@ -32,7 +33,7 @@
 // @import "../../../node_modules/bootstrap/scss/progress";
 @import "../../../node_modules/bootstrap/scss/list-group";
 @import "../../../node_modules/bootstrap/scss/close";
-// @import "../../../node_modules/bootstrap/scss/toasts";
+@import "../../../node_modules/bootstrap/scss/toasts";
 @import "../../../node_modules/bootstrap/scss/modal";
 // @import "../../../node_modules/bootstrap/scss/tooltip";
 // @import "../../../node_modules/bootstrap/scss/popover";

server/ui-src/assets/styles.scss

@@ -91,6 +91,89 @@
 
 #preview-html {
     min-height: 300px;
+
+    &.tablet,
+    &.phone {
+        border: solid $gray-300 1px;
+    }
+}
+
+#responsive-view {
+    margin: auto;
+    transition: width 0.5s;
+    position: relative;
+
+    &.tablet,
+    &.phone {
+        border-radius: 35px;
+        box-sizing: content-box;
+        padding-bottom: 76px;
+        padding-top: 54px;
+        padding-left: 10px;
+        padding-right: 10px;
+        background: $gray-800;
+
+        iframe {
+            height: 100% !important;
+            background: #fff;
+        }
+    }
+
+    &.phone {
+        &::before {
+            border-radius: 5px;
+            background: $gray-600;
+            top: 22px;
+            content: "";
+            display: block;
+            height: 10px;
+            left: 50%;
+            position: absolute;
+            transform: translateX(-50%);
+            width: 80px;
+        }
+
+        &::after {
+            border-radius: 20px;
+            background: $gray-900;
+            bottom: 20px;
+            content: "";
+            display: block;
+            width: 65px;
+            height: 40px;
+            left: 50%;
+            position: absolute;
+            transform: translateX(-50%);
+        }
+    }
+
+    &.tablet {
+        &::before {
+            border-radius: 50%;
+            border: solid #b5b0b0 2px;
+            top: 22px;
+            content: "";
+            display: block;
+            width: 10px;
+            height: 10px;
+            left: 50%;
+            position: absolute;
+            transform: translateX(-50%);
+        }
+
+        &::after {
+            border-radius: 50%;
+            border: solid #b5b0b0 2px;
+            bottom: 23px;
+            content: "";
+            display: block;
+            width: 30px;
+            height: 30px;
+            left: 50%;
+            position: absolute;
+            transform: translateX(-50%);
+        }
+    }
 }
 
 .list-group-item.message:first-child {
@@ -168,6 +251,10 @@ body.blur {
     input {
         font-size: 0.875em;
     }
+
+    div {
+        cursor: text; // html5-tags
+    }
 }
 
 #DownloadBtn {
@@ -181,6 +268,14 @@ body.blur {
     }
 }
 
+#ReleaseModal {
+    .form-control.dropdown {
+        div {
+            @extend .form-control;
+        }
+    }
+}
+
 /* PrismJS 1.29.0 - modified!
 https://prismjs.com/download.html#themes=prism-coy&languages=markup+css */
 code[class*="language-"],
@@ -302,8 +397,8 @@ pre[class*="language-"] {
     opacity: 0.7;
 }
 @media screen and (max-width: 767px) {
-    pre[class*="language-"]:after,
-    pre[class*="language-"]:before {
+    pre[class*="language-"]::after,
+    pre[class*="language-"]::before {
         bottom: 14px;
         box-shadow: none;
     }

server/ui-src/mixins.js

@@ -1,22 +1,32 @@
-import axios from 'axios';
-import { Modal } from 'bootstrap';
-import moment from 'moment';
+import axios from 'axios'
+import { Modal } from 'bootstrap'
+import moment from 'moment'
+import ColorHash from 'color-hash'
 
 
 // FakeModal is used to return a fake Bootstrap modal
-// if the ID returns nothing
+// if the ID returns nothing to prevent errors.
 function FakeModal() { }
-FakeModal.prototype.hide = function () { alert('close fake modal') }
-FakeModal.prototype.show = function () { alert('open fake modal') }
+FakeModal.prototype.hide = function () { }
+FakeModal.prototype.show = function () { }
+
+// Set up the color hash generator lightness and hue to ensure darker colors
+const colorHash = new ColorHash({ lightness: 0.3, saturation: [0.35, 0.5, 0.65] });
 
 /* Common mixin functions used in apps */
 const commonMixins = {
 	data() {
 		return {
-			loading: 0
+			loading: 0,
+			tagColorCache: {},
+			showTagColors: true
 		}
 	},
 
+	mounted() {
+		this.showTagColors = localStorage.getItem('showTagsColors')
+	},
+
 	methods: {
 		getFileSize: function (bytes) {
 			var i = Math.floor(Math.log(bytes) / Math.log(1024));
@@ -201,6 +211,27 @@ const commonMixins = {
 			}
 
 			return 'bi-file-arrow-down-fill';
+		},
+
+		// Returns a hex color based on a string.
+		// Values are stored in an array for faster lookup / processing.
+		colorHash: function (s) {
+			if (this.tagColorCache[s] != undefined) {
+				return this.tagColorCache[s]
+			}
+			this.tagColorCache[s] = colorHash.hex(s)
+
+			return this.tagColorCache[s]
+		},
+
+		toggleTagColors: function () {
+			if (this.showTagColors) {
+				localStorage.removeItem('showTagsColors')
+				this.showTagColors = false
+			} else {
+				localStorage.setItem('showTagsColors', '1')
+				this.showTagColors = true
+			}
 		}
 	}
 }

server/ui-src/templates/Message.vue

@@ -26,7 +26,15 @@ export default {
 			showTags: false, // to force rerendering of component
 			messageTags: [],
 			allTags: [],
-			loadHeaders: false
+			loadHeaders: false,
+			showMobileBtns: false,
+			scaleHTMLPreview: 'display',
+			// keys names match bootstrap icon names 
+			responsiveSizes: {
+				phone: 'width: 322px; height: 570px',
+				tablet: 'width: 768px; height: 1024px',
+				display: 'width: 100%; height: 100%',
+			},
 		}
 	},
 
@@ -38,6 +46,7 @@ export default {
 				self.messageTags = self.message.Tags;
 				self.allTags = self.existingTags;
 				self.loadHeaders = false;
+				self.scaleHTMLPreview = 'display';// default view
 				// delay to select first tab and add HTML highlighting (prev/next)
 				self.$nextTick(function () {
 					self.renderUI();
@@ -55,6 +64,14 @@ export default {
 			if (this.showTags) {
 				this.saveTags();
 			}
+		},
+		scaleHTMLPreview() {
+			if (this.scaleHTMLPreview == 'display') {
+				let self = this;
+				window.setTimeout(function () {
+					self.resizeIframes();
+				}, 500);
+			}
 		}
 	},
 
@@ -124,15 +141,14 @@ export default {
 		},
 
 		resizeIframes: function () {
+			if (this.scaleHTMLPreview != 'display') {
+				return;
+			}
 			let h = document.getElementById('preview-html');
 			if (h) {
 				h.style.height = h.contentWindow.document.body.scrollHeight + 50 + 'px';
 			}
 
-			let s = document.getElementById('message-src');
-			if (s) {
-				s.style.height = s.contentWindow.document.body.scrollHeight + 50 + 'px';
-			}
 		},
 
 		saveTags: function () {
@@ -147,6 +163,32 @@ export default {
 				self.scrollInPlace = true;
 				self.$emit('loadMessages');
 			});
+		},
+
+		// Convert plain text to HTML including anchor links
+		textToHTML: function (s) {
+			let html = s
+
+			// full links with http(s)
+			let re = /(\b(https?|ftp):\/\/[\-\w@:%_\+.~#?,&\/\/=;]+)\b/gim
+			html = html.replace(re, '˱˱˱a href=ˠˠˠ$&ˠˠˠ target=_blank rel=noopener˲˲˲$&˱˱˱/a˲˲˲')
+
+			// plain www links without https?:// prefix
+			let re2 = /(^|[^\/])(www\.[\S]+(\b|$))/gim
+			html = html.replace(re2, '$1˱˱˱a href=ˠˠˠhttp://$2ˠˠˠ target=ˠˠˠ_blankˠˠˠ rel=ˠˠˠnoopenerˠˠˠ˲˲˲$2˱˱˱/a˲˲˲')
+
+			// escape to HTML & convert <>" back
+			html = html
+				.replace(/&/g, "&amp;")
+				.replace(/</g, "&lt;")
+				.replace(/>/g, "&gt;")
+				.replace(/"/g, "&quot;")
+				.replace(/'/g, "&#039;")
+				.replace(/˱˱˱/g, '<')
+				.replace(/˲˲˲/g, '>')
+				.replace(/ˠˠˠ/g, '"')
+
+			return html
 		}
 	}
 }
@@ -179,7 +221,7 @@ export default {
 									<template v-if="i > 0">, </template>
 									<span class="text-nowrap">{{ t.Name + " &lt;" + t.Address + "&gt;" }}</span>
 								</span>
-								<span v-else>Undisclosed recipients</span>
+								<span v-else class="text-muted">[Undisclosed recipients]</span>
 							</td>
 						</tr>
 						<tr v-if="message.Cc && message.Cc.length" class="small">
@@ -195,7 +237,8 @@ export default {
 							<td class="privacy">
 								<span v-for="(t, i) in message.Bcc">
 									<template v-if="i > 0">,</template>
-									{{ t.Name + " &lt;" + t.Address + "&gt;" }} </span>
+									{{ t.Name + " &lt;" + t.Address + "&gt;" }}
+								</span>
 							</td>
 						</tr>
 						<tr v-if="message.ReplyTo && message.ReplyTo.length" class="small">
@@ -206,9 +249,16 @@ export default {
 									{{ t.Name + " &lt;" + t.Address + "&gt;" }} </span>
 							</td>
 						</tr>
+						<tr v-if="message.ReturnPath && message.ReturnPath != message.From.Address" class="small">
+							<th class="text-nowrap">Return-Path</th>
+							<td class="privacy text-muted">&lt;{{ message.ReturnPath }}&gt;</td>
+						</tr>
 						<tr>
 							<th class="small">Subject</th>
-							<td><strong>{{ message.Subject }}</strong></td>
+							<td>
+								<strong v-if="message.Subject != ''">{{ message.Subject }}</strong>
+								<small class="text-muted" v-else>[ no subject ]</small>
+							</td>
 						</tr>
 						<tr class="d-md-none small">
 							<th class="small">Date</th>
@@ -219,9 +269,10 @@ export default {
 							<th>Tags</th>
 							<td>
 								<select class="form-select small tag-selector" v-model="messageTags" multiple
-									data-allow-new="true" data-clear-end="true" data-allow-clear="true"
-									data-placeholder="Add tags..." data-badge-style="secondary"
-									data-regex="^([a-zA-Z0-9\-\ \_]){3,}$" data-separator="|,|">
+									data-full-width="false" data-suggestions-threshold="1" data-allow-new="true"
+									data-clear-end="true" data-allow-clear="true" data-placeholder="Add tags..."
+									data-badge-style="secondary" data-regex="^([a-zA-Z0-9\-\ \_]){3,}$"
+									data-separator="|,|">
 									<option value="">Type a tag...</option>
 									<!-- you need at least one option with the placeholder -->
 									<option v-for="t in allTags" :value="t">{{ t }}</option>
@@ -245,29 +296,45 @@ export default {
 		<nav>
 			<div class="nav nav-tabs my-3" id="nav-tab" role="tablist">
 				<button class="nav-link" id="nav-html-tab" data-bs-toggle="tab" data-bs-target="#nav-html" type="button"
-					role="tab" aria-controls="nav-html" aria-selected="true" v-if="message.HTML">HTML</button>
+					role="tab" aria-controls="nav-html" aria-selected="true" v-if="message.HTML"
+					v-on:click="showMobileBtns = true; resizeIframes()">HTML</button>
 				<button class="nav-link" id="nav-html-source-tab" data-bs-toggle="tab" data-bs-target="#nav-html-source"
-					type="button" role="tab" aria-controls="nav-html-source" aria-selected="false" v-if="message.HTML">
+					type="button" role="tab" aria-controls="nav-html-source" aria-selected="false" v-if="message.HTML"
+					v-on:click=" showMobileBtns = false">
 					HTML <span class="d-sm-none">Src</span><span class="d-none d-sm-inline">Source</span>
 				</button>
 				<button class="nav-link" id="nav-plain-text-tab" data-bs-toggle="tab" data-bs-target="#nav-plain-text"
 					type="button" role="tab" aria-controls="nav-plain-text" aria-selected="false"
-					:class="message.HTML == '' ? 'show' : ''">Text</button>
+					:class="message.HTML == '' ? 'show' : ''" v-on:click=" showMobileBtns = false">Text</button>
 				<button class="nav-link" id="nav-headers-tab" data-bs-toggle="tab" data-bs-target="#nav-headers"
-					type="button" role="tab" aria-controls="nav-headers" aria-selected="false">
+					type="button" role="tab" aria-controls="nav-headers" aria-selected="false"
+					v-on:click=" showMobileBtns = false">
 					<span class="d-sm-none">Hdrs</span><span class="d-none d-sm-inline">Headers</span>
 				</button>
 				<button class="nav-link" id="nav-raw-tab" data-bs-toggle="tab" data-bs-target="#nav-raw" type="button"
-					role="tab" aria-controls="nav-raw" aria-selected="false">Raw</button>
+					role="tab" aria-controls="nav-raw" aria-selected="false"
+					v-on:click=" showMobileBtns = false">Raw</button>
+
+				<div class="d-none d-lg-block ms-auto me-2" v-if="showMobileBtns">
+					<template v-for="  vals, key   in   responsiveSizes  ">
+						<button class="btn" :class="scaleHTMLPreview == key ? 'btn-outline-primary' : ''"
+							:disabled="scaleHTMLPreview == key" :title="'Switch to ' + key + ' view'"
+							v-on:click=" scaleHTMLPreview = key">
+							<i class="bi" :class="'bi-' + key"></i>
+						</button>
+					</template>
+				</div>
 			</div>
 		</nav>
 
 		<div class="tab-content mb-5" id="nav-tabContent">
 			<div v-if="message.HTML != ''" class="tab-pane fade show" id="nav-html" role="tabpanel"
 				aria-labelledby="nav-html-tab" tabindex="0">
-				<iframe target-blank="" class="tab-pane" id="preview-html" :srcdoc="message.HTML" v-on:load="resizeIframe"
-					seamless frameborder="0" style="width: 100%; height: 100%;">
-				</iframe>
+				<div id="responsive-view" :class="scaleHTMLPreview" :style="responsiveSizes[scaleHTMLPreview]">
+					<iframe target-blank="" class="tab-pane d-block" id="preview-html" :srcdoc="message.HTML"
+						v-on:load="resizeIframe" frameborder="0" style="width: 100%; height: 100%;">
+					</iframe>
+				</div>
 				<Attachments v-if="allAttachments(message).length" :message="message"
 					:attachments="allAttachments(message)"></Attachments>
 			</div>
@@ -277,7 +344,7 @@ export default {
 			</div>
 			<div class="tab-pane fade" id="nav-plain-text" role="tabpanel" aria-labelledby="nav-plain-text-tab" tabindex="0"
 				:class="message.HTML == '' ? 'show' : ''">
-				<div class="text-view">{{ message.Text }}</div>
+				<div class="text-view" v-html="textToHTML(message.Text)"></div>
 				<Attachments v-if="allAttachments(message).length" :message="message"
 					:attachments="allAttachments(message)"></Attachments>
 			</div>
@@ -285,8 +352,8 @@ export default {
 				<Headers v-if="loadHeaders" :message="message"></Headers>
 			</div>
 			<div class="tab-pane fade" id="nav-raw" role="tabpanel" aria-labelledby="nav-raw-tab" tabindex="0">
-				<iframe v-if="srcURI" :src="srcURI" v-on:load="resizeIframe" seamless frameborder="0"
-					style="width: 100%; height: 300px;" id="message-src"></iframe>
+				<iframe v-if="srcURI" :src="srcURI" v-on:load="resizeIframe" frameborder="0"
+					style="width: 100%; height: 300px; background: #fff; color: #15141A"></iframe>
 			</div>
 		</div>
 	</div>

server/ui-src/templates/MessageRelease.vue

@@ -0,0 +1,114 @@
+
+<script>
+import Tags from "bootstrap5-tags";
+import commonMixins from '../mixins.js';
+
+export default {
+	props: {
+		message: Object,
+		relayConfig: Object,
+		releaseAddresses: Array
+	},
+
+	data() {
+		return {
+			addresses: []
+		}
+	},
+
+	mixins: [commonMixins],
+
+	mounted() {
+		this.addresses = JSON.parse(JSON.stringify(this.releaseAddresses));
+		this.$nextTick(function () {
+			Tags.init("select[multiple]");
+		});
+	},
+
+	methods: {
+		releaseMessage: function () {
+			let self = this;
+			// set timeout to allow for user clicking send before the tag filter has applied the tag
+			window.setTimeout(function () {
+				if (!self.addresses.length) {
+					return false;
+				}
+
+				let data = {
+					to: self.addresses
+				}
+
+				self.post('api/v1/message/' + self.message.ID + '/release', data, function (response) {
+					self.modal("ReleaseModal").hide();
+				});
+			}, 100);
+		}
+	}
+}
+</script>
+
+<template>
+	<div class="modal-dialog modal-lg" v-if="message">
+		<div class="modal-content">
+			<div class="modal-header">
+				<h1 class="modal-title fs-5" id="AppInfoModalLabel">Release email</h1>
+				<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+			</div>
+			<div class="modal-body">
+				<h6>Send this message to one or more addresses specified below.</h6>
+				<div class="row">
+					<label class="col-sm-2 col-form-label text-muted">From</label>
+					<div class="col-sm-10">
+						<input type="text" readonly class="form-control-plaintext" :value="message.From.Address">
+					</div>
+				</div>
+				<div class="row">
+					<label class=" col-sm-2 col-form-label text-muted">Subject</label>
+					<div class="col-sm-10">
+						<input type="text" readonly class="form-control-plaintext" :value="message.Subject">
+					</div>
+				</div>
+				<div class="row mb-3">
+					<label class="col-sm-2 col-form-label text-muted">Send to</label>
+					<div class="col-sm-10">
+						<select class="form-select tag-selector" v-model="addresses" multiple data-allow-new="true"
+							data-clear-end="true" data-allow-clear="true" data-placeholder="Enter email addresses..."
+							data-add-on-blur="true" data-badge-style="primary"
+							data-regex='^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|.(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$'
+							data-separator="|,|">
+							<option value="">Enter email addresses...</option>
+							<!-- you need at least one option with the placeholder -->
+							<option v-for="t in releaseAddresses" :value="t">{{ t }}</option>
+						</select>
+						<div class="invalid-feedback">Invalid email address</div>
+					</div>
+				</div>
+				<div class="form-text text-center" v-if="relayConfig.MessageRelay.RecipientAllowlist != ''">
+					Note: A recipient allowlist has been configured. Any mail address not matching it will be rejected.
+					<br class="d-none d-md-inline">
+					Configured allowlist: <b>{{ relayConfig.MessageRelay.RecipientAllowlist }}</b>
+				</div>
+				<div class="form-text text-center">
+					Note: For testing purposes, a unique Message-Id will be generated on send.
+					<br class="d-none d-md-inline">
+					SMTP delivery failures will bounce back to
+					<b v-if="relayConfig.MessageRelay.ReturnPath != ''">{{ relayConfig.MessageRelay.ReturnPath }}</b>
+					<b v-else>{{ message.ReturnPath }}</b>.
+				</div>
+			</div>
+			<div class="modal-footer">
+				<button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
+				<button type="button" class="btn btn-primary" :disabled="!addresses.length"
+					v-on:click="releaseMessage">Release</button>
+			</div>
+		</div>
+	</div>
+
+	<div id="loading" v-if="loading">
+		<div class="d-flex justify-content-center align-items-center h-100">
+			<div class="spinner-border text-secondary" role="status">
+				<span class="visually-hidden">Loading...</span>
+			</div>
+		</div>
+	</div>
+</template>

server/ui-src/templates/MessageToast.vue

@@ -0,0 +1,44 @@
+<script>
+import { Toast } from 'bootstrap';
+
+export default {
+	props: {
+		message: Object
+	},
+
+	mounted() {
+		let self = this;
+		let el = document.getElementById('messageToast');
+		if (el) {
+			el.addEventListener('hidden.bs.toast', () => {
+				self.$emit("clearMessageToast");
+			})
+
+			let b = Toast.getOrCreateInstance(el);
+			b.show();
+		}
+	}
+}
+</script>
+
+<template>
+	<div class="toast-container position-fixed bottom-0 end-0 p-3">
+		<div id="messageToast" class="toast" role="alert" aria-live="assertive" aria-atomic="true">
+			<div class="toast-header">
+				<i class="bi bi-envelope-exclamation-fill me-2"></i>
+				<strong class="me-auto"><a :href="'#' + message.ID">New message</a></strong>
+				<small class="text-body-secondary">now</small>
+				<button type="button" class="btn-close" data-bs-dismiss="toast" aria-label="Close"></button>
+			</div>
+
+			<div class="toast-body">
+				<div>
+					<a :href="'#' + message.ID" class="d-block text-truncate text-muted">
+						<template v-if="message.Subject != ''">{{ message.Subject }}</template>
+						<template v-else>[ no subject ]</template>
+					</a>
+				</div>
+			</div>
+		</div>
+	</div>
+</template>

server/ui/api/v1/index.html

@@ -16,8 +16,8 @@
 		regular-font="system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', 'Liberation Sans', Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji'"
 		mono-font="Courier New, Courier, System, fixed-width" font-size="large" allow-spec-url-load="false"
 		allow-spec-file-load="false" allow-server-selection="false" allow-search="false" allow-advanced-search="false"
-		bg-color="#ffffff" nav-bg-color="#e3e8ec" nav-text-color="#212529" nav-hover-bg-color="#fff"
-		header-color="#2c3e50" primary-color="#2c3e50" text-color="#212529">
+		show-curl-before-try="true" bg-color="#ffffff" nav-bg-color="#e3e8ec" nav-text-color="#212529"
+		nav-hover-bg-color="#fff" header-color="#2c3e50" primary-color="#2c3e50" text-color="#212529">
 		<div slot="header">Mailpit API v1 documentation</div>
 		<a target='_blank' href="../../" slot="logo">
 			<img src="../../mailpit.svg" width="40" alt="Mailpit" />

server/ui/api/v1/swagger.json

@@ -27,7 +27,7 @@
       "get": {
         "description": "Returns basic runtime information, message totals and latest release version.",
         "produces": [
-          "application/octet-stream"
+          "application/json"
         ],
         "schemes": [
           "http",
@@ -36,7 +36,7 @@
         "tags": [
           "application"
         ],
-        "summary": "Get the application information",
+        "summary": "Get application information",
         "operationId": "AppInformation",
         "responses": {
           "200": {
@@ -66,7 +66,7 @@
         "parameters": [
           {
             "type": "string",
-            "description": "message id",
+            "description": "Database ID",
             "name": "ID",
             "in": "path",
             "required": true
@@ -103,7 +103,7 @@
         "parameters": [
           {
             "type": "string",
-            "description": "message id",
+            "description": "Database ID",
             "name": "ID",
             "in": "path",
             "required": true
@@ -142,14 +142,14 @@
         "parameters": [
           {
             "type": "string",
-            "description": "message id",
+            "description": "Database ID",
             "name": "ID",
             "in": "path",
             "required": true
           },
           {
             "type": "string",
-            "description": "attachment part id",
+            "description": "Attachment part ID",
             "name": "PartID",
             "in": "path",
             "required": true
@@ -183,14 +183,14 @@
         "parameters": [
           {
             "type": "string",
-            "description": "message id",
+            "description": "Database ID",
             "name": "ID",
             "in": "path",
             "required": true
           },
           {
             "type": "string",
-            "description": "attachment part id",
+            "description": "Attachment part ID",
             "name": "PartID",
             "in": "path",
             "required": true
@@ -224,7 +224,7 @@
         "parameters": [
           {
             "type": "string",
-            "description": "message id",
+            "description": "Database ID",
             "name": "ID",
             "in": "path",
             "required": true
@@ -240,6 +240,54 @@
         }
       }
     },
+    "/api/v1/message/{ID}/release": {
+      "post": {
+        "description": "Release a message via a pre-configured external SMTP server..",
+        "consumes": [
+          "application/json"
+        ],
+        "produces": [
+          "text/plain"
+        ],
+        "schemes": [
+          "http",
+          "https"
+        ],
+        "tags": [
+          "message"
+        ],
+        "summary": "Release message",
+        "operationId": "Release",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "Database ID",
+            "name": "ID",
+            "in": "path",
+            "required": true
+          },
+          {
+            "description": "Array of email addresses to release message to",
+            "name": "to",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "description": "Array of email addresses to release message to",
+              "type": "object",
+              "$ref": "#/definitions/ReleaseMessageRequest"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "$ref": "#/responses/OKResponse"
+          },
+          "default": {
+            "$ref": "#/responses/ErrorResponse"
+          }
+        }
+      }
+    },
     "/api/v1/messages": {
       "get": {
         "description": "Returns messages from the mailbox ordered from newest to oldest.",
@@ -259,14 +307,14 @@
           {
             "type": "integer",
             "default": 0,
-            "description": "pagination offset",
+            "description": "Pagination offset",
             "name": "start",
             "in": "query"
           },
           {
             "type": "integer",
             "default": 50,
-            "description": "limit results",
+            "description": "Limit results",
             "name": "limit",
             "in": "query"
           }
@@ -299,11 +347,11 @@
         "operationId": "SetReadStatus",
         "parameters": [
           {
-            "description": "Message ids to update",
+            "description": "Database IDs to update",
             "name": "ids",
             "in": "body",
             "schema": {
-              "description": "Message ids to update",
+              "description": "Database IDs to update",
               "type": "object",
               "$ref": "#/definitions/SetReadStatusRequest"
             }
@@ -337,11 +385,11 @@
         "operationId": "Delete",
         "parameters": [
           {
-            "description": "Message ids to delete",
+            "description": "Database IDs to delete",
             "name": "ids",
             "in": "body",
             "schema": {
-              "description": "Message ids to delete",
+              "description": "Database IDs to delete",
               "type": "object",
               "$ref": "#/definitions/DeleteRequest"
             }
@@ -375,7 +423,7 @@
         "parameters": [
           {
             "type": "string",
-            "description": "search query",
+            "description": "Search query",
             "name": "query",
             "in": "query",
             "required": true
@@ -383,7 +431,7 @@
           {
             "type": "integer",
             "default": 50,
-            "description": "limit results",
+            "description": "Limit results",
             "name": "limit",
             "in": "query"
           }
@@ -418,12 +466,12 @@
         "operationId": "SetTags",
         "parameters": [
           {
-            "description": "Message ids to update",
+            "description": "Database IDs to update",
             "name": "ids",
             "in": "body",
             "required": true,
             "schema": {
-              "description": "Message ids to update",
+              "description": "Database IDs to update",
               "type": "object",
               "$ref": "#/definitions/SetTagsRequest"
             }
@@ -438,6 +486,31 @@
           }
         }
       }
+    },
+    "/api/v1/webui": {
+      "get": {
+        "description": "Returns configuration settings for the web UI.",
+        "produces": [
+          "application/json"
+        ],
+        "schemes": [
+          "http",
+          "https"
+        ],
+        "tags": [
+          "application"
+        ],
+        "summary": "Get web UI configuration",
+        "operationId": "WebUIConfiguration",
+        "responses": {
+          "200": {
+            "$ref": "#/responses/WebUIConfigurationResponse"
+          },
+          "default": {
+            "$ref": "#/responses/ErrorResponse"
+          }
+        }
+      }
     }
   },
   "definitions": {
@@ -456,7 +529,7 @@
       "x-go-package": "net/mail"
     },
     "AppInformation": {
-      "description": "Response includes the current and latest Mailpit versions, database info, and memory usage",
+      "description": "Response includes the current and latest Mailpit version, database info, and memory usage",
       "type": "object",
       "properties": {
         "Database": {
@@ -495,23 +568,23 @@
       "type": "object",
       "properties": {
         "ContentID": {
-          "description": "content id",
+          "description": "Content ID",
           "type": "string"
         },
         "ContentType": {
-          "description": "content type",
+          "description": "Content type",
           "type": "string"
         },
         "FileName": {
-          "description": "file name",
+          "description": "File name",
           "type": "string"
         },
         "PartID": {
-          "description": "attachment part id",
+          "description": "Attachment part ID",
           "type": "string"
         },
         "Size": {
-          "description": "size in bytes",
+          "description": "Size in bytes",
           "type": "integer",
           "format": "int64"
         }
@@ -572,7 +645,7 @@
           "type": "string"
         },
         "ID": {
-          "description": "Unique message database id",
+          "description": "Database ID",
           "type": "string"
         },
         "Inline": {
@@ -582,6 +655,10 @@
             "$ref": "#/definitions/Attachment"
           }
         },
+        "MessageID": {
+          "description": "Message ID",
+          "type": "string"
+        },
         "Read": {
           "description": "Read status",
           "type": "boolean"
@@ -593,6 +670,10 @@
             "$ref": "#/definitions/Address"
           }
         },
+        "ReturnPath": {
+          "description": "Return-Path",
+          "type": "string"
+        },
         "Size": {
           "description": "Message size in bytes",
           "type": "integer",
@@ -667,7 +748,11 @@
           "$ref": "#/definitions/Address"
         },
         "ID": {
-          "description": "Unique message database id",
+          "description": "Database ID",
+          "type": "string"
+        },
+        "MessageID": {
+          "description": "Message ID",
           "type": "string"
         },
         "Read": {
@@ -747,6 +832,22 @@
       },
       "x-go-package": "github.com/axllent/mailpit/server/apiv1"
     },
+    "ReleaseMessageRequest": {
+      "description": "Release request",
+      "type": "object",
+      "properties": {
+        "to": {
+          "description": "To\nin:body",
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "x-go-name": "To"
+        }
+      },
+      "x-go-name": "releaseMessageRequest",
+      "x-go-package": "github.com/axllent/mailpit/server/apiv1"
+    },
     "SetReadStatusRequest": {
       "description": "Set read status request",
       "type": "object",
@@ -773,7 +874,7 @@
       "type": "object",
       "properties": {
         "ids": {
-          "description": "ids\nin:body",
+          "description": "IDs\nin:body",
           "type": "array",
           "items": {
             "type": "string"
@@ -791,6 +892,36 @@
       },
       "x-go-name": "setTagsRequest",
       "x-go-package": "github.com/axllent/mailpit/server/apiv1"
+    },
+    "WebUIConfiguration": {
+      "description": "Response includes global web UI settings",
+      "type": "object",
+      "properties": {
+        "MessageRelay": {
+          "description": "Message Relay information",
+          "type": "object",
+          "properties": {
+            "Enabled": {
+              "description": "Whether message relaying (release) is enabled",
+              "type": "boolean"
+            },
+            "RecipientAllowlist": {
+              "description": "Allowlist of accepted recipients",
+              "type": "string"
+            },
+            "ReturnPath": {
+              "description": "Enforced Return-Path (if set) for relay bounces",
+              "type": "string"
+            },
+            "SMTPServer": {
+              "description": "The configured SMTP server address",
+              "type": "string"
+            }
+          }
+        }
+      },
+      "x-go-name": "webUIConfiguration",
+      "x-go-package": "github.com/axllent/mailpit/server/apiv1"
     }
   },
   "responses": {
@@ -822,6 +953,17 @@
     },
     "TextResponse": {
       "description": "Plain text response"
+    },
+    "WebUIConfigurationResponse": {
+      "description": "Web UI configuration",
+      "schema": {
+        "$ref": "#/definitions/WebUIConfiguration"
+      },
+      "headers": {
+        "Body": {
+          "description": "Web UI configuration settings"
+        }
+      }
     }
   }
 }

storage/database.go

@@ -72,20 +72,51 @@ var (
 			Script: `ALTER TABLE mailbox ADD COLUMN Tags Text  NOT NULL DEFAULT '[]';
 			CREATE INDEX IF NOT EXISTS idx_tags ON mailbox (Tags);`,
 		},
+		{
+			Version:     1.2,
+			Description: "Creating new mailbox format",
+			Script: `CREATE TABLE IF NOT EXISTS 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 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 mailbox;
+
+			DROP TABLE IF EXISTS mailbox;
+			ALTER TABLE mailboxtmp RENAME TO mailbox;
+			CREATE INDEX IF NOT EXISTS idx_created ON mailbox (Created);
+			CREATE UNIQUE INDEX IF NOT EXISTS idx_id ON mailbox (ID);
+			CREATE INDEX IF NOT EXISTS idx_message_id ON mailbox (MessageID);
+			CREATE INDEX IF NOT EXISTS idx_subject ON mailbox (Subject);
+			CREATE INDEX IF NOT EXISTS idx_size ON mailbox (Size);
+			CREATE INDEX IF NOT EXISTS idx_inline ON mailbox (Inline);
+			CREATE INDEX IF NOT EXISTS idx_attachments ON mailbox (Attachments);
+			CREATE INDEX IF NOT EXISTS idx_read ON mailbox (Read);
+			CREATE INDEX IF NOT EXISTS idx_tags ON mailbox (Tags);`,
+		},
 	}
 )
 
 // DBMailSummary struct for storing mail summary
 type DBMailSummary struct {
-	Created     time.Time
-	From        *mail.Address
-	To          []*mail.Address
-	Cc          []*mail.Address
-	Bcc         []*mail.Address
-	Subject     string
-	Size        int
-	Inline      int
-	Attachments int
+	From *mail.Address
+	To   []*mail.Address
+	Cc   []*mail.Address
+	Bcc  []*mail.Address
 }
 
 // InitDB will initialise the database
@@ -144,6 +175,8 @@ func InitDB() error {
 	// auto-prune & delete
 	go dbCron()
 
+	go dataMigrations()
+
 	return nil
 }
 
@@ -174,7 +207,7 @@ func Close() {
 
 // Store will save an email to the database tables
 func Store(body []byte) (string, error) {
-	// Parse message body with enmime.
+	// Parse message body with enmime
 	env, err := enmime.ReadEnvelope(bytes.NewReader(body))
 	if err != nil {
 		logger.Log().Warningf("[db] %s", err.Error())
@@ -189,22 +222,21 @@ func Store(body []byte) (string, error) {
 		from = &mail.Address{Name: env.GetHeader("From")}
 	}
 
+	messageID := strings.Trim(env.Root.Header.Get("Message-ID"), "<>")
+
 	obj := DBMailSummary{
-		Created:     time.Now(),
-		From:        from,
-		To:          addressToSlice(env, "To"),
-		Cc:          addressToSlice(env, "Cc"),
-		Bcc:         addressToSlice(env, "Bcc"),
-		Subject:     env.GetHeader("Subject"),
-		Size:        len(body),
-		Inline:      len(env.Inlines),
-		Attachments: len(env.Attachments),
+		From: from,
+		To:   addressToSlice(env, "To"),
+		Cc:   addressToSlice(env, "Cc"),
+		Bcc:  addressToSlice(env, "Bcc"),
 	}
 
+	created := time.Now()
+
 	// use message date instead of created date
 	if config.UseMessageDates {
 		if mDate, err := env.Date(); err == nil {
-			obj.Created = mDate
+			created = mDate
 		}
 	}
 
@@ -219,7 +251,16 @@ func Store(body []byte) (string, error) {
 		return "", err
 	}
 
-	tagData := findTags(&body)
+	// extract tags from body matches based on --tag
+	tagStr := findTagsInRawMessage(&body)
+
+	// extract tags from X-Tags header
+	headerTags := strings.TrimSpace(env.Root.Header.Get("X-Tags"))
+	if headerTags != "" {
+		tagStr += "," + headerTags
+	}
+
+	tagData := uniqueTagsFromString(tagStr)
 
 	tagJSON, err := json.Marshal(tagData)
 	if err != nil {
@@ -237,8 +278,14 @@ func Store(body []byte) (string, error) {
 	// roll back if it fails
 	defer tx.Rollback()
 
+	subject := env.GetHeader("Subject")
+	size := len(body)
+	inline := len(env.Inlines)
+	attachments := len(env.Attachments)
+
 	// insert mail summary data
-	_, err = tx.Exec("INSERT INTO mailbox(ID, Data, Search, Tags, Read) values(?,?,?,?,0)", id, string(summaryJSON), searchText, string(tagJSON))
+	_, err = tx.Exec("INSERT INTO mailbox(Created, ID, MessageID, Subject, Metadata, Size, Inline, Attachments, SearchText, Tags, Read) values(?,?,?,?,?,?,?,?,?,?,0)",
+		created.UnixMilli(), id, messageID, subject, string(summaryJSON), size, inline, attachments, searchText, string(tagJSON))
 	if err != nil {
 		return "", err
 	}
@@ -259,9 +306,13 @@ func Store(body []byte) (string, error) {
 		return "", err
 	}
 
-	c.Tags = tagData
-
+	c.Created = created
 	c.ID = id
+	c.MessageID = messageID
+	c.Attachments = attachments
+	c.Subject = subject
+	c.Size = size
+	c.Tags = tagData
 
 	websockets.Broadcast("new", c)
 
@@ -276,24 +327,29 @@ func List(start, limit int) ([]MessageSummary, error) {
 	results := []MessageSummary{}
 
 	q := sqlf.From("mailbox").
-		Select(`ID, Data, Tags, Read`).
-		OrderBy("Sort DESC").
+		Select(`Created, ID, MessageID, Subject, Metadata, Size, Attachments, Read, Tags`).
+		OrderBy("Created DESC").
 		Limit(limit).
 		Offset(start)
 
 	if err := q.QueryAndClose(nil, db, func(row *sql.Rows) {
+		var created int64
 		var id string
-		var summary string
+		var messageID string
+		var subject string
+		var metadata string
+		var size int
+		var attachments int
 		var tags string
 		var read int
 		em := MessageSummary{}
 
-		if err := row.Scan(&id, &summary, &tags, &read); err != nil {
+		if err := row.Scan(&created, &id, &messageID, &subject, &metadata, &size, &attachments, &read, &tags); err != nil {
 			logger.Log().Error(err)
 			return
 		}
 
-		if err := json.Unmarshal([]byte(summary), &em); err != nil {
+		if err := json.Unmarshal([]byte(metadata), &em); err != nil {
 			logger.Log().Error(err)
 			return
 		}
@@ -303,11 +359,18 @@ func List(start, limit int) ([]MessageSummary, error) {
 			return
 		}
 
+		em.Created = time.UnixMilli(created)
 		em.ID = id
+		em.MessageID = messageID
+		em.Subject = subject
+		em.Size = size
+		em.Attachments = attachments
 		em.Read = read == 1
 
 		results = append(results, em)
 
+		// logger.PrettyPrint(em)
+
 	}); err != nil {
 		return results, err
 	}
@@ -318,7 +381,7 @@ func List(start, limit int) ([]MessageSummary, error) {
 }
 
 // Search will search a mailbox for search terms.
-// The search is broken up by segments (exact phrases can be quoted), and interprits specific terms such as:
+// 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 string, start, limit int) ([]MessageSummary, error) {
@@ -342,19 +405,24 @@ func Search(search string, start, limit int) ([]MessageSummary, error) {
 	q := searchParser(args, start, limit)
 
 	if err := q.QueryAndClose(nil, db, func(row *sql.Rows) {
+		var created int64
 		var id string
-		var summary string
+		var messageID string
+		var subject string
+		var metadata string
+		var size int
+		var attachments int
 		var tags string
 		var read int
 		var ignore string
 		em := MessageSummary{}
 
-		if err := row.Scan(&id, &summary, &tags, &read, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore); err != nil {
+		if err := row.Scan(&created, &id, &messageID, &subject, &metadata, &size, &attachments, &read, &tags, &ignore, &ignore, &ignore, &ignore); err != nil {
 			logger.Log().Error(err)
 			return
 		}
 
-		if err := json.Unmarshal([]byte(summary), &em); err != nil {
+		if err := json.Unmarshal([]byte(metadata), &em); err != nil {
 			logger.Log().Error(err)
 			return
 		}
@@ -364,7 +432,12 @@ func Search(search string, start, limit int) ([]MessageSummary, error) {
 			return
 		}
 
+		em.Created = time.UnixMilli(created)
 		em.ID = id
+		em.MessageID = messageID
+		em.Subject = subject
+		em.Size = size
+		em.Attachments = attachments
 		em.Read = read == 1
 
 		results = append(results, em)
@@ -404,49 +477,51 @@ func GetMessage(id string) (*Message, error) {
 		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("mailbox").
-			Select(`Data`).
-			OrderBy("Sort DESC").
+			Select(`Created`).
 			Where(`ID = ?`, id)
 
 		if err := q.QueryAndClose(nil, db, func(row *sql.Rows) {
-			var summary string
-			em := MessageSummary{}
+			var created int64
 
-			if err := row.Scan(&summary); err != nil {
-				logger.Log().Error(err)
-				return
-			}
-
-			if err := json.Unmarshal([]byte(summary), &em); err != nil {
+			if err := row.Scan(&created); err != nil {
 				logger.Log().Error(err)
 				return
 			}
 
 			logger.Log().Debugf("[db] %s does not contain a date header, using received datetime", id)
 
-			date = em.Created
+			date = time.UnixMilli(created)
 		}); err != nil {
 			logger.Log().Error(err)
 		}
 	}
 
 	obj := Message{
-		ID:      id,
-		Read:    true,
-		From:    from,
-		Date:    date,
-		To:      addressToSlice(env, "To"),
-		Cc:      addressToSlice(env, "Cc"),
-		Bcc:     addressToSlice(env, "Bcc"),
-		ReplyTo: addressToSlice(env, "Reply-To"),
-		Subject: env.GetHeader("Subject"),
-		Tags:    getMessageTags(id),
-		Size:    len(raw),
-		Text:    env.Text,
+		ID:         id,
+		MessageID:  messageID,
+		Read:       true,
+		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:       len(raw),
+		Text:       env.Text,
 	}
 
 	// strip base tags
@@ -815,3 +890,16 @@ func IsUnread(id string) bool {
 
 	return unread == 1
 }
+
+// MessageIDExists checks whether a Message-ID exists in the DB
+func MessageIDExists(id string) bool {
+	var total int
+
+	q := sqlf.From("mailbox").
+		Select("COUNT(*)").To(&total).
+		Where("MessageID = ?", id)
+
+	_ = q.QueryRowAndClose(nil, db)
+
+	return total != 0
+}

storage/database_test.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/utils/logger"
 	"github.com/jhillyerd/enmime"
 )
 
@@ -230,7 +231,7 @@ func BenchmarkImportMime(b *testing.B) {
 }
 
 func setup() {
-	config.NoLogging = true
+	logger.NoLogging = true
 	config.MaxMessages = 0
 	config.DataFile = ""
 

storage/migrationTasks.go

@@ -0,0 +1,200 @@
+package storage
+
+import (
+	"bytes"
+	"context"
+	"database/sql"
+	"strings"
+	"time"
+
+	"github.com/axllent/mailpit/config"
+	"github.com/axllent/mailpit/utils/logger"
+	"github.com/jhillyerd/enmime"
+	"github.com/leporo/sqlf"
+	"golang.org/x/text/language"
+	"golang.org/x/text/message"
+)
+
+func dataMigrations() {
+	updateOrderByCreatedTask()
+	assignMessageIDsTask()
+}
+
+// Update Created column using Created metadata datetime <= v1.6.5
+// Migration task implemented 05/2023 - can be removed end 2023
+func updateOrderByCreatedTask() {
+	q := sqlf.From("mailbox").
+		Select("ID").
+		Select(`json_extract(Metadata, '$.Created') as Created`).
+		Where("Created < ?", 1155000600)
+
+	toUpdate := make(map[string]int64)
+	p := message.NewPrinter(language.English)
+
+	if err := q.QueryAndClose(nil, db, func(row *sql.Rows) {
+		var id string
+		var ts sql.NullString
+		if err := row.Scan(&id, &ts); err != nil {
+			logger.Log().Error("[migration]", err)
+			return
+		}
+
+		if !ts.Valid {
+			logger.Log().Errorf("[migration] cannot get Created timestamp from %s", id)
+			return
+		}
+
+		t, _ := time.Parse(time.RFC3339Nano, ts.String)
+		toUpdate[id] = t.UnixMilli()
+	}); err != nil {
+		logger.Log().Error("[migration]", err)
+		return
+	}
+
+	total := len(toUpdate)
+
+	if total == 0 {
+		return
+	}
+
+	logger.Log().Infof("[migration] updating timestamp for %s messages", p.Sprintf("%d", len(toUpdate)))
+
+	// begin a transaction
+	ctx := context.Background()
+	tx, err := db.BeginTx(ctx, nil)
+	if err != nil {
+		logger.Log().Error("[migration]", err)
+		return
+	}
+
+	// roll back if it fails
+	defer tx.Rollback()
+
+	var blockTime = time.Now()
+
+	count := 0
+	for id, ts := range toUpdate {
+		count++
+		_, err := tx.Exec(`UPDATE mailbox SET Created = ? WHERE ID = ?`, ts, id)
+		if err != nil {
+			logger.Log().Error("[migration]", err)
+		}
+
+		if count%1000 == 0 {
+			percent := (100 * count) / total
+			logger.Log().Infof("[migration] updated timestamp for 1,000 messages [%d%%] in %s", percent, time.Since(blockTime))
+			blockTime = time.Now()
+		}
+	}
+
+	logger.Log().Infof("[migration] commit %s changes", p.Sprintf("%d", count))
+
+	if err := tx.Commit(); err != nil {
+		logger.Log().Error("[migration]", err)
+		return
+	}
+
+	logger.Log().Infof("[migration] complete")
+}
+
+// Find any messages without a stored Message-ID and update it <= v1.6.5
+// Migration task implemented 05/2023 - can be removed end 2023
+func assignMessageIDsTask() {
+	if !config.IgnoreDuplicateIDs {
+		return
+	}
+
+	q := sqlf.From("mailbox").
+		Select("ID").
+		Where("MessageID = ''")
+
+	missingIDS := make(map[string]string)
+
+	if err := q.QueryAndClose(nil, db, func(row *sql.Rows) {
+		var id string
+		if err := row.Scan(&id); err != nil {
+			logger.Log().Error("[migration]", err)
+			return
+		}
+		missingIDS[id] = ""
+	}); err != nil {
+		logger.Log().Error("[migration]", err)
+	}
+
+	if len(missingIDS) == 0 {
+		return
+	}
+
+	var count int
+	var blockTime = time.Now()
+	p := message.NewPrinter(language.English)
+
+	total := len(missingIDS)
+
+	logger.Log().Infof("[migration] extracting Message-IDs for %s messages", p.Sprintf("%d", total))
+
+	for id := range missingIDS {
+		raw, err := GetMessageRaw(id)
+		if err != nil {
+			logger.Log().Error("[migration]", err)
+			continue
+		}
+
+		r := bytes.NewReader(raw)
+
+		env, err := enmime.ReadEnvelope(r)
+		if err != nil {
+			logger.Log().Error("[migration]", err)
+			continue
+		}
+
+		messageID := strings.Trim(env.GetHeader("Message-ID"), "<>")
+
+		missingIDS[id] = messageID
+
+		count++
+
+		if count%1000 == 0 {
+			percent := (100 * count) / total
+			logger.Log().Infof("[migration] extracted 1,000 Message-IDs [%d%%] in %s", percent, time.Since(blockTime))
+			blockTime = time.Now()
+		}
+	}
+
+	// begin a transaction
+	ctx := context.Background()
+	tx, err := db.BeginTx(ctx, nil)
+	if err != nil {
+		logger.Log().Error("[migration]", err)
+		return
+	}
+
+	// roll back if it fails
+	defer tx.Rollback()
+
+	count = 0
+
+	for id, mid := range missingIDS {
+		_, err = tx.Exec(`UPDATE mailbox SET MessageID = ? WHERE ID = ?`, mid, id)
+		if err != nil {
+			logger.Log().Error("[migration]", err)
+		}
+
+		count++
+
+		if count%1000 == 0 {
+			percent := (100 * count) / total
+			logger.Log().Infof("[migration] stored 1,000 Message-IDs [%d%%] in %s", percent, time.Since(blockTime))
+			blockTime = time.Now()
+		}
+	}
+
+	logger.Log().Infof("[migration] commit %s changes", p.Sprintf("%d", count))
+
+	if err := tx.Commit(); err != nil {
+		logger.Log().Error("[migration]", err)
+		return
+	}
+
+	logger.Log().Infof("[migration] complete")
+}

storage/search.go

@@ -14,15 +14,13 @@ func searchParser(args []string, start, limit int) *sqlf.Stmt {
 	}
 
 	q := sqlf.From("mailbox").
-		Select(`ID, Data, Tags, Read,
-			json_extract(Data, '$.To') as ToJSON,
-			json_extract(Data, '$.From') as FromJSON,
-			IFNULL(json_extract(Data, '$.Cc'), '{}') as CcJSON,
-			IFNULL(json_extract(Data, '$.Bcc'), '{}') as BccJSON,
-			json_extract(Data, '$.Subject') as Subject,
-			json_extract(Data, '$.Attachments') as Attachments
+		Select(`Created, ID, MessageID, Subject, Metadata, Size, Attachments, Read, Tags,
+			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
 		`).
-		OrderBy("Sort DESC").
+		OrderBy("Created DESC").
 		Limit(limit).
 		Offset(start)
 
@@ -92,6 +90,15 @@ func searchParser(args []string, start, limit int) *sqlf.Stmt {
 					q.Where("Subject LIKE ?", "%"+escPercentChar(w)+"%")
 				}
 			}
+		} else if strings.HasPrefix(w, "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(w, "tag:") {
 			w = cleanString(w[4:])
 			if w != "" {
@@ -122,9 +129,9 @@ func searchParser(args []string, start, limit int) *sqlf.Stmt {
 		} else {
 			// search text
 			if exclude {
-				q.Where("search NOT LIKE ?", "%"+cleanString(escPercentChar(w))+"%")
+				q.Where("SearchText NOT LIKE ?", "%"+cleanString(escPercentChar(w))+"%")
 			} else {
-				q.Where("search LIKE ?", "%"+cleanString(escPercentChar(w))+"%")
+				q.Where("SearchText LIKE ?", "%"+cleanString(escPercentChar(w))+"%")
 			}
 		}
 	}

storage/structs.go

@@ -11,8 +11,10 @@ import (
 //
 // swagger:model Message
 type Message struct {
-	// Unique message database id
+	// Database ID
 	ID string
+	// Message ID
+	MessageID string
 	// Read status
 	Read bool
 	// From address
@@ -25,6 +27,8 @@ type Message struct {
 	Bcc []*mail.Address
 	// ReplyTo addresses
 	ReplyTo []*mail.Address
+	// Return-Path
+	ReturnPath string
 	// Message subject
 	Subject string
 	// Message date if set, else date received
@@ -47,15 +51,15 @@ type Message struct {
 //
 // swagger:model Attachment
 type Attachment struct {
-	// attachment part id
+	// Attachment part ID
 	PartID string
-	// file name
+	// File name
 	FileName string
-	// content type
+	// Content type
 	ContentType string
-	// content id
+	// Content ID
 	ContentID string
-	// size in bytes
+	// Size in bytes
 	Size int
 }
 
@@ -63,8 +67,10 @@ type Attachment struct {
 //
 // swagger:model MessageSummary
 type MessageSummary struct {
-	// Unique message database id
+	// Database ID
 	ID string
+	// Message ID
+	MessageID string
 	// Read status
 	Read bool
 	// From address

storage/tags.go

@@ -3,27 +3,27 @@ package storage
 import (
 	"context"
 	"encoding/json"
-	"regexp"
 	"sort"
 	"strings"
 
 	"github.com/axllent/mailpit/config"
 	"github.com/axllent/mailpit/utils/logger"
+	"github.com/axllent/mailpit/utils/tools"
 	"github.com/leporo/sqlf"
 )
 
-// SetTags will set the tags for a given message ID, used via API
+// SetTags will set the tags for a given database ID, used via API
 func SetTags(id string, tags []string) error {
 	applyTags := []string{}
-	reg := regexp.MustCompile(`\s+`)
 	for _, t := range tags {
-		t = strings.TrimSpace(reg.ReplaceAllString(t, " "))
-
-		if t != "" && config.TagRegexp.MatchString(t) && !inArray(t, applyTags) {
+		t = tools.CleanTag(t)
+		if t != "" && config.ValidTagRegexp.MatchString(t) && !inArray(t, applyTags) {
 			applyTags = append(applyTags, t)
 		}
 	}
 
+	sort.Strings(applyTags)
+
 	tagJSON, err := json.Marshal(applyTags)
 	if err != nil {
 		logger.Log().Errorf("[db] setting tags for message %s", id)
@@ -42,26 +42,25 @@ func SetTags(id string, tags []string) error {
 	return err
 }
 
-// Used to auto-apply tags to new messages
-func findTags(message *[]byte) []string {
-	tags := []string{}
+// Find tags set via --tags in raw message.
+// Returns a comma-separated string.
+func findTagsInRawMessage(message *[]byte) string {
+	tagStr := ""
 	if len(config.SMTPTags) == 0 {
-		return tags
+		return tagStr
 	}
 
 	str := strings.ToLower(string(*message))
 	for _, t := range config.SMTPTags {
-		if !inArray(t.Tag, tags) && strings.Contains(str, t.Match) {
-			tags = append(tags, t.Tag)
+		if strings.Contains(str, t.Match) {
+			tagStr += "," + t.Tag
 		}
 	}
 
-	sort.Strings(tags)
-
-	return tags
+	return tagStr
 }
 
-// Get message tags from the database for a given message ID.
+// Get message tags from the database for a given database ID
 // Used when parsing a raw email.
 func getMessageTags(id string) []string {
 	tags := []string{}
@@ -84,3 +83,31 @@ func getMessageTags(id string) []string {
 
 	return tags
 }
+
+// UniqueTagsFromString will split a string with commas, and extract a unique slice of formatted tags
+func uniqueTagsFromString(s string) []string {
+	tags := []string{}
+
+	if s == "" {
+		return tags
+	}
+
+	parts := strings.Split(s, ",")
+	for _, p := range parts {
+		w := tools.CleanTag(p)
+		if w == "" {
+			continue
+		}
+		if config.ValidTagRegexp.MatchString(w) {
+			if !inArray(w, tags) {
+				tags = append(tags, w)
+			}
+		} else {
+			logger.Log().Debugf("[db] ignoring invalid tag: %s", w)
+		}
+	}
+
+	sort.Strings(tags)
+
+	return tags
+}

storage/utils.go

@@ -39,7 +39,7 @@ func createSearchText(env *enmime.Envelope) string {
 	b.WriteString(env.GetHeader("Bcc") + " ")
 	h := strings.TrimSpace(
 		html2text.HTML2TextWithOptions(
-			env.HTML, 
+			env.HTML,
 			html2text.WithLinksInnerText(),
 		),
 	)
@@ -75,7 +75,7 @@ func dbCron() {
 		time.Sleep(60 * time.Second)
 		start := time.Now()
 
-		// check if database contains deleted data and has not beein in use
+		// check if database contains deleted data and has not been in use
 		// for 5 minutes, if so VACUUM
 		currentTime := time.Now()
 		diff := currentTime.Sub(dbLastAction)
@@ -92,7 +92,7 @@ func dbCron() {
 		if config.MaxMessages > 0 {
 			q := sqlf.Select("ID").
 				From("mailbox").
-				OrderBy("Sort DESC").
+				OrderBy("Created DESC").
 				Limit(5000).
 				Offset(config.MaxMessages)
 
@@ -167,6 +167,7 @@ func isFile(path string) bool {
 	return true
 }
 
+// InArray tests if a string in within an array. It is not case sensitive.
 func inArray(k string, arr []string) bool {
 	k = strings.ToLower(k)
 	for _, v := range arr {

utils/logger/logger.go

@@ -1,16 +1,23 @@
+// Package logger handles the logging
 package logger
 
 import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"regexp"
 
-	"github.com/axllent/mailpit/config"
 	"github.com/sirupsen/logrus"
 )
 
 var (
 	log *logrus.Logger
+	// VerboseLogging for verbose logging
+	VerboseLogging bool
+	// QuietLogging shows only errors
+	QuietLogging bool
+	// NoLogging shows only fatal errors
+	NoLogging bool
 )
 
 // Log returns the logger instance
@@ -18,13 +25,13 @@ func Log() *logrus.Logger {
 	if log == nil {
 		log = logrus.New()
 		log.SetLevel(logrus.InfoLevel)
-		if config.VerboseLogging {
+		if VerboseLogging {
 			// verbose logging (debug)
 			log.SetLevel(logrus.DebugLevel)
-		} else if config.QuietLogging {
+		} else if QuietLogging {
 			// show errors only
 			log.SetLevel(logrus.ErrorLevel)
-		} else if config.NoLogging {
+		} else if NoLogging {
 			// disable all logging (tests)
 			log.SetLevel(logrus.PanicLevel)
 		}
@@ -45,3 +52,25 @@ func PrettyPrint(i interface{}) {
 	s, _ := json.MarshalIndent(i, "", "\t")
 	fmt.Println(string(s))
 }
+
+// CleanIP returns a human-readable IP for the logging interface
+// when starting services. It translates [::]:<port> to "0.0.0.0:<port>"
+func CleanIP(s string) string {
+	re := regexp.MustCompile(`^\[\:\:\]\:\d+`)
+	if re.MatchString(s) {
+		return "0.0.0.0:" + s[5:]
+	}
+
+	return s
+}
+
+// CleanHTTPIP returns a human-readable IP for the logging interface
+// when starting services. It translates [::]:<port> to "localhost:<port>"
+func CleanHTTPIP(s string) string {
+	re := regexp.MustCompile(`^\[\:\:\]\:\d+`)
+	if re.MatchString(s) {
+		return "localhost:" + s[5:]
+	}
+
+	return s
+}

utils/tools/message.go

@@ -0,0 +1,59 @@
+// Package tools provides various methods for various things
+package tools
+
+import (
+	"bufio"
+	"bytes"
+	"net/mail"
+	"regexp"
+
+	"github.com/axllent/mailpit/utils/logger"
+)
+
+// RemoveMessageHeaders scans a message for headers, if found them removes them.
+// It will only remove a single instance of any header, and is intended to remove
+// Bcc & Message-Id.
+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] removing %s header", hdr)
+				msg = bytes.Replace(msg, hdr, []byte(""), 1)
+			}
+		}
+	}
+
+	return msg, nil
+}

utils/tools/tags.go

@@ -0,0 +1,25 @@
+package tools
+
+import (
+	"regexp"
+	"strings"
+)
+
+var (
+	// Invalid tag characters regex
+	tagsInvalidChars = regexp.MustCompile(`[^a-zA-Z0-9\-\ \_]`)
+
+	// Regex to catch multiple spaces
+	multiSpaceRe = regexp.MustCompile(`(\s+)`)
+)
+
+// CleanTag returns a clean tag, removing whitespace and invalid characters
+func CleanTag(s string) string {
+	s = strings.TrimSpace(
+		multiSpaceRe.ReplaceAllString(
+			tagsInvalidChars.ReplaceAllString(s, " "),
+			" ",
+		),
+	)
+	return s
+}