docs: MS smtp guide (#29289)

Signed-off-by: jameskimmel <17176225+jameskimmel@users.noreply.github.com>

docs/docs/administration/email-notification.mdx

@@ -14,6 +14,8 @@ Under Email, enter the required details to connect with an SMTP server.
 
 You can use [this guide](/guides/smtp-gmail) to use Gmail's SMTP server.
 
+You can use [this guide](/guides/smtp-microsoft365) to use Microsoft's SMTP server.
+
 ## User's notifications settings
 
 Users can manage their email notification settings from their account settings page on the web. They can choose to turn email notifications on or off for the following events:

docs/docs/guides/smtp-microsoft365.md

@@ -0,0 +1,19 @@
+# SMTP settings using Microsoft 365
+
+This guide walks you through how to get the information you need to set up your Immich instance to send emails using Microsoft's SMTP server.
+
+## Create an app password
+
+You will need to generate an app password to use your Microsoft email in Immich. Depending on if you have a personal or business account, you can use https://go.microsoft.com/fwlink/?linkid=2274139 or https://myaccount.microsoft.com/securtiy-info respectively.
+
+## Entering the SMTP credential in Immich
+
+Entering your credential in Immich's email notification settings at `Administration -> Settings -> Notification Settings`
+
+Host: smtp-mail.outlook.com
+Port: 587
+username: your mail address
+Password: app password you created earlier
+SMTPS: set it to disabled
+
+<img src={require('./img/email-ms-settings.webp').default} width="80%" title="SMTP settings" />