Stalwart Mail Server
All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features.
Description from awesome-selfhosted (CC BY-SA 3.0)
Still maintained? Yes: 205 commits in the last 90 days, latest release v1.0.1 (Oct 2026).
Comparisons in Communication - Email - Complete Solutions: Gmail alternatives.
At a glance
Stalwart Mail Server quick facts
- Health score
- 97/100 GOOD
- Stars
- 15,514
- Last commit
- 2 days ago (Oct 2026)
- Latest release
- v1.0.1, Oct 2026
- Licence
- AGPL-3.0
Top alternatives to Stalwart Mail Server
In its own words
The project's README opens: "Secure, scalable mail & collaboration server with comprehensive protocol support 🛡️ (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV)."
Why it ranks here
Health score explained
Stalwart Mail Server scores 97/100, #3 of 18 in Communication - Email - Complete Solutions: 205 commits in the last 90 days earn 35.0 of 35 points, the latest release (v1.0.1, 2 days ago) earns 25.0 of 25, 15,514 stars add 16.8 of 20, an active, unarchived repository keeps 10 and Docker support adds the final 10. That places it in the good band (70 and above). The biggest shortfall is star count, worth 3.2 more points.
Recomputed nightly from the GitHub API. How the score is calculated.
- Commit activity 35.0 / 35
205 commits in 90 days (30+ scores full marks)
- Release recency 25.0 / 25
v1.0.1 released 2 days ago
- Stars biggest shortfall 16.8 / 20
16k stars on GitHub (logarithmic)
- Not archived 10.0 / 10
Repository is active
- Docker support 10.0 / 10
Docker image or Compose file available
Commit activity
- 205
- Last 90 days
- 711
- Last 12 months
- 2 days ago
- Last push
Ranked #3 of 18 tools in Communication - Email - Complete Solutions by health , between Mailcow (#2) and Mailu (#4) .
Details
| Licence | AGPL-3.0 |
| Platforms | Rust, Docker |
| Latest release | v1.0.1 · 2 days ago |
| Stars | 15,514 |
| Open issues | 51 |
| Docker | Yes |
| Repository | stalwartlabs/stalwart ↗ |
Stalwart Mail Server vs its top 5 alternatives
Active tools that share a category with Stalwart Mail Server (Communication - Email - Complete Solutions), scored on the same five terms.
| Tool | Health | Stars | Licence | Last commit |
|---|---|---|---|---|
| docker-mailserver | 97 | 20k | MIT | 4 days ago |
| Mailcow | 97 | 14k | GPL-3.0 | yesterday |
| Stalwart Mail Server (this tool) | 97 | 16k | AGPL-3.0 | 2 days ago |
| Mailu | 96 | 7.6k | MIT | yesterday |
| Mox | 85 | 5.9k | MIT | 3 days ago |
| Maddy Mail Server | 80 | 6.1k | GPL-3.0 | today |
Stalwart Mail Server: common questions
Is Stalwart Mail Server still maintained?
Stalwart Mail Server had 205 commits in the last 90 days and its last push was 2 days ago; the latest tagged release, v1.0.1, is from 2 days ago. Repoly recomputes this nightly.
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