Devices / Self-hosted apps & servers / mailcow Mail server suite

mailcow Mail server suite releases

Name: mailcow Mail server suite firmware
Author: mailcow

critical fix

mailcow Mail server suite is tracked under self-hosted apps & servers. Its latest version, 3.10.12, shipped on Aug 18, 2026.

Latest version: 3.10.12
Released: Aug 18, 2026
Category: Self-hosted apps & servers
Last checked: Sep 15, 2026

How to update mailcow Mail server suite

Open update page ↗

Read the release notes first — self-hosted projects break config and schemas between versions more often than appliances do.
Docker: pull the new image tag and recreate the container (`docker compose pull && docker compose up -d`).
Package or bare metal: update through your distribution's package manager, or replace the binary from the releases page.
Back up the config and database directory first. For most projects a downgrade is not supported once the schema has migrated.

Always download firmware from the manufacturer or project itself. Firmwarely links out; it never hosts firmware.

What changed

This release updates Redis, SOGo and ClamAV, addressing multiple security issues. What's Changed [Redis] Update to 7.4.10 [Clamd] Update to 1.4.6 [SOGo] Update to 5.12.10 [Web] Minor hardening across web UI and nginx [Dovecot] Remove legacy DeltaChat auto-filing sieve rule [Postfix] update postscre…

Manufacturer release notes ↗

Version history

3.10.12

Aug 18, 2026

FAQ

What is the latest version of mailcow Mail server suite?

Version 3.10.12, released Aug 18, 2026. This page is refreshed every 30 minutes from the manufacturer's release page.

How do I update mailcow Mail server suite?

See the step-by-step above. Pull the new image or package and restart the service. Read the release notes and back up the data directory first; most projects can't downgrade once the database has migrated.

How does Firmwarely know when there's a new version?

Every 30 minutes we read the manufacturer's official release page for the mailcow Mail server suite and record the version, date and changelog. Subscribers watching this device get one email a day when it changed.

Is this an official mailcow page?

No. Firmwarely is independent. Project and product names belong to their owners; always install releases from the project's own source.