Stalwart Mail ServervsZammad
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Stalwart Mail Server | Zammad | |
|---|---|---|
| Score | 79/100 | 70/100 |
| Rank in category | #2 of 16 in Mail Server | #1 of 9 in Helpdesk |
| GitHub stars | 15 470 | 6 050 |
| Stars, last 30 days | +667 | +98 |
| Stable releases, 12 months | 31 | 0 |
| Latest release | v1.0.1 · 28 Oct 2026 | — |
| Setup | Moderate | Advanced |
| Official Docker image | Yes | Yes |
| License | AGPL-3.0-only AND LicenseRef-SEL | AGPL-3.0 |
| Main language | Rust | Ruby |
Which one should you pick?
Stalwart Mail Server scores 79/100 against 70/100 for Zammad, so it is the safer default.
Stalwart Mail Server ships more often: 31 stable releases in the past year, against 0 for Zammad.
If you want the quickest setup, Stalwart Mail Server is easier to run; Zammad needs more configuration.
Stalwart Mail Server is growing faster right now (+667 stars in 30 days).
Stalwart Mail Server details →Zammad details →
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