OpenSMTPD
OpenSMTPD is an open-source, self-hosted app in the Email Servers category, licensed ISC and written mainly in C. It has 586 GitHub stars and its last commit was on Sep 14, 2026 (data as of Oct 26, 2026).
GitHub stats
- GitHub stars
- 586
- Forks
- 105
- Open issues
- 114
- Commits, last 12 months
- 73
- Last commit
- Sep 14, 2026
- Latest release
- 7.9.0p0Sep 13, 2026
- Created
- Jun 19, 2012
- License
- ISCOpen source
Data as of from the GitHub API. Report an error
Project health
ActiveActive: last commit Sep 14, 2026, 73 commits in 12 months.
| Last commit | Sep 14, 2026 |
|---|---|
| Commits, last 12 months | 73 |
| Latest release | 7.9.0p0 (Sep 13, 2026) |
| Releases, last 12 months | 3 |
| Releases, all time | 25 |
| Open issues | 114 |
| Open pull requests | 11 |
| Good first issues | 0 |
| Contributing guide | No |
| Security policy | No |
| Created | Jun 19, 2012 |
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 OpenSMTPD
Secure SMTP server implementation from the OpenBSD project.
Description adapted from awesome-selfhosted (CC BY-SA 3.0). Source code: github.com/OpenSMTPD/OpenSMTPD.
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Is OpenSMTPD free and open source?
Yes. OpenSMTPD is open-source software released under the ISC 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 OpenSMTPD with Docker?
OpenSMTPD does not list an official Docker image. It installs natively (C and deb), so follow the install steps in its README or look for a community-maintained container.
What are the best alternatives to OpenSMTPD?
Popular self-hosted alternatives to OpenSMTPD include docker-mailserver, Postal and Mail-in-a-Box.
Is OpenSMTPD actively maintained?
The most recent commit to OpenSMTPD was on Sep 14, 2026 with 73 commits in the past twelve months. The latest release is 7.9.0p0, published Sep 13, 2026. It had 114 open issues on GitHub. appsgit's project-health label for it is "Active" as of Oct 26, 2026.