Mailu
Mailu is an open-source, self-hosted app in the Email Servers category, licensed MIT and written mainly in Python. It is a self-hosted alternative to Gmail and ships a Docker image. It has 7,592 GitHub stars and its last commit was on Oct 25, 2026 (data as of Oct 26, 2026).
GitHub stats
- GitHub stars
- 7,592
- Forks
- 1,023
- Open issues
- 82
- Commits, last 12 months
- 259
- Last commit
- Oct 25, 2026
- Latest release
- 2024.06.67Oct 23, 2026
- Created
- Jan 10, 2016
- License
- MITOpen source
Data as of from the GitHub API. Report an error
Project health
ActiveActive: last commit Oct 25, 2026, 259 commits in 12 months.
- Regular releases10 or more releases in 12 months
- Security policyPublishes a security policy on GitHub
| Last commit | Oct 25, 2026 |
|---|---|
| Commits, last 12 months | 259 |
| Latest release | 2024.06.67 (Oct 23, 2026) |
| Releases, last 12 months | 10 or more |
| Releases, all time | 165 |
| Open issues | 82 |
| Open pull requests | 9 |
| Good first issues | 0 |
| Contributing guide | Yes |
| Security policy | Yes |
| Created | Jan 10, 2016 |
Health as of , from the GitHub API. A label describes activity, not quality or security. How we label project health · Report a data error
About Mailu
Simple yet full-featured mail server as a set of Docker images.
Description adapted from awesome-selfhosted (CC BY-SA 3.0). Source code: github.com/Mailu/Mailu.
Topics
- docker
- imap
- pop3
- webmail
- mailserver
- smtp
- docker-compose
- dkim
Open-source alternative to
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Is Mailu free and open source?
Yes. Mailu is open-source software released under the MIT license, so you can self-host it at no cost. You only pay for the server it runs on, and some projects also offer an optional paid cloud plan.
Can I run Mailu with Docker?
Yes. Mailu provides a Docker image, so you can run it on any Linux server with Docker and Docker Compose installed. The project README lists the image name and the environment variables to set.
What are the best alternatives to Mailu?
Popular self-hosted alternatives to Mailu include docker-mailserver, Postal and Mail-in-a-Box. Mailu itself is a self-hosted alternative to Gmail.
Is Mailu actively maintained?
The most recent commit to Mailu was on Oct 25, 2026 with 259 commits in the past twelve months. The latest release is 2024.06.67, published Oct 23, 2026. It had 82 open issues on GitHub. appsgit's project-health label for it is "Active" as of Oct 26, 2026.