Mox
Complete e-mail solution with IMAP4, SMTP, SPF, DKIM, DMARC, MTA-STS, DANE and DNSSEC, reputation-based and content-based junk filtering, Internationalization (IDNA), automatic TLS with ACME and….
- Email Servers
- Go
- MIT
- Actively maintained
GitHub stats
- GitHub stars
- 5,885
- Forks
- 228
- Open issues
- 192
- Commits, last 12 months
- 95
- Last commit
- Sep 13, 2026
- Latest release
- v0.0.17Aug 19, 2026
- Created
- Jan 30, 2023
Data from the GitHub API, refreshed daily.
About Mox
Complete e-mail solution with IMAP4, SMTP, SPF, DKIM, DMARC, MTA-STS, DANE and DNSSEC, reputation-based and content-based junk filtering, Internationalization (IDNA), automatic TLS with ACME and…. Mox is open source under the MIT license and written mainly in Go, so you can read the code, run it on your own hardware and keep full control of your data.
The project has 5,885 stars and 228 forks on GitHub, with 95 commits over the last year. It installs natively rather than through an official Docker image, so plan for a short manual setup.
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What is Mox?
Mox is a free, open-source app you can host on your own server, listed in our Email Servers category. Complete e-mail solution with IMAP4, SMTP, SPF, DKIM, DMARC, MTA-STS, DANE and DNSSEC, reputation-based and content-based junk filtering, Internationalization (IDNA), automatic TLS with ACME and…. The source code lives at github.com/mjl-/mox, where it has 5,885 stars.
Is Mox free and open source?
Yes. Mox 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 Mox with Docker?
Mox does not list an official Docker image. It installs natively (Go), so follow the install steps in its README or look for a community-maintained container.
What are the best alternatives to Mox?
Popular open-source alternatives to Mox include docker-mailserver, Postal and Mail-in-a-Box. Mox itself is a self-hosted alternative to Mailgun.
Is Mox actively maintained?
The most recent commit to Mox was on Sep 13, 2026 with 95 commits in the past twelve months. The latest release is v0.0.17, published Aug 19, 2026. Check the open issues on GitHub to gauge how quickly maintainers respond.