rustmailer
A self-hosted Email Middleware for IMAP, SMTP, Gmail API, Graph API — built for developers
About rustmailer
A self-hosted Email Middleware for IMAP, SMTP, Gmail API, Graph API — built for developers
What's New in v1.6.0
1.6.0 – 2026-03-05
✨ Major Features
Microsoft Graph API support
RustMailer now supports integration with Microsoft Graph, enabling Outlook / Microsoft 365 mailboxes to work alongside IMAP and Gmail accounts.
Key capabilities include:
- Email synchronization via Graph API
- Send, reply, and forward emails
- Fetch threads and thread messages
- Move, copy, and delete messages
- Attachment download support
- Draft creation and reply-all support
- Mailbox management (create / delete / update)
🏷 Unified message tagging
Introduced a new unified tagging API:
/tag-messagesendpoint for setting labels / categories / keywords- Works across IMAP, Gmail, and Graph accounts
- Added gRPC support for
tag_messages
🔧 Improvements
- Improved Graph folder normalization (Inbox, Sent, Drafts)
- More robust handling of missing Graph API scopes
- Compact MailList UI for higher message density
- New
/disk-cacheendpoint to manually clear disk cache
🐛 Fixes
- Fixed resync behavior for empty accounts
- Prevent message from being marked as read when creating reply drafts
- Improved Graph API error handling and logging
- Docker healthcheck improvements
Full Changelog: https://github.com/rustmailer/rustmailer/compare/1.5.3...1.6.0
Legal Notice
This software is provided by its original developers. We only index and provide links to official download sources. All downloads are from the original publishers and are completely legal and safe.
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