2026-07b 2026-09
mailcow/mailcow-dockerizedAug 18, 2026 → Sep 21, 202634 days between releases
What's New
Updates Unbound, SOGo, and Redis; adds password toggle and fixes critical auth cache issue
Breaking Changes
- Dovecot: Removal of legacy DeltaChat auto-filing sieve rule (persisting from previous release)
New Features
- Added show/hide password toggle on login pages
- Added ACL and global switch to disable external alias goto
Improvements
- Updated Unbound, SOGo, Redis, and Postfix TLS components
- Improved web UI usability with better DNS zonefile handling and link redirects
- Enhanced security with auth cache fix and minor UI hardening
Bug Fixes
- Fixed critical auth cache wipe issue during nginx outages
- Resolved web UI issues regarding DNS zonefile generation and deep links
- Fixed password error translations in forced change modal
Upgrade Notes
Note the removal of the legacy DeltaChat auto-filing sieve rule if you use it. Restart containers to apply the critical auth cache fix. The new password toggle feature is enabled by default.
The Two Releases
🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision B
Aug 18, 2026· 2 months ago
Updates Redis, SOGo, and ClamAV to address security vulnerabilities. The release also includes minor web UI hardening and removes a legacy DeltaChat sieve rule.
Full release notes🍂🐮 Mootember 2026 | Unbound 1.26.1, SOGo 5.12.11 & Redis 7.4.11
Sep 21, 2026· 1 month ago
This release focuses on improving web interface usability and security, adding features like password toggles and controls for external alias routing. It also addresses a critical authentication caching issue and updates core components including Unbound and SOGo.
Full release notes