0.12.5

mailcow/mailcow-dockerized0.12.5Jun 23, 2026by LucasXu0

AI Summary

Fixes WebSocket connection issues that could lead to data loss on disk writes.

Key Highlights

Fixed stale WebSocket connections causing disk write failures.
Prevents rare data loss scenarios due to connection staleness.

Full Release Notes

## Version 0.12.5 – 06/23/2026

### Desktop

#### Bug Fixes

- Fix: stale WebSocket connection occasionally caused writes to disk to fail, which could lead to data loss in rare cases.

### Mobile

#### Bug Fixes

- Fix: stale WebSocket connection occasionally caused writes to disk to fail, which could lead to data loss in rare cases.

### Security Notice (Windows)

This Windows release is signed with a newly renewed code-signing certificate. Because Windows SmartScreen builds reputation per certificate, you may temporarily see an "unrecognized app" warning. This build is properly signed and safe — if prompted, select **More info → Run anyway**. The warning will clear as the certificate establishes reputation.