Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. Only configuration files, no SQL database.
Communication - Email - Complete SolutionsMIT
Mailu
Simple yet full-featured mail server as a set of Docker images.
Details
- Website
- mailu.io
- Source
- github.com
- Licence
- MIT
- Platforms
- Docker, Python
- GitHub stars
- 7,564
- Last update
- 2026-10-17
Open-source alternative to
Categories
Alternatives to Mailu
See all Communication - Email - Complete Solutions →Postal
17kComplete and fully featured mail server for use by websites & web servers.
Communication - Email - Complete SolutionsMIT
Turns any Ubuntu server into a fully functional mail server with one command.
Communication - Email - Complete SolutionsCC0-1.0
All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features.
Communication - Email - Complete SolutionsAGPL-3.0
Mailcow
14kMail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for administration.
Communication - Email - Complete SolutionsGPL-3.0
SimpleLogin
7.1kOpen source email alias solution to protect your email address. Comes with browser extensions and mobile apps.
Communication - Email - Complete SolutionsMIT