KeployvsStalwart Mail Server
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Keploy | Stalwart Mail Server | |
|---|---|---|
| Score | 74/100 | 78/100 |
| Rank in category | #2 of 10 in Testing | #2 of 16 in Mail Server |
| GitHub stars | 18 870 | 15 444 |
| Stars, last 30 days | +205 | +660 |
| Stable releases, 12 months | 28 | 30 |
| Latest release | v3.6.170 · 28 Oct 2026 | v1.0.0 · 26 Oct 2026 |
| Setup | Moderate | Moderate |
| Official Docker image | No | Yes |
| License | Apache-2.0 | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Go | Rust |
Which one should you pick?
Stalwart Mail Server scores 78/100 against 74/100 for Keploy, so it is the safer default.
Stalwart Mail Server ships more often: 30 stable releases in the past year, against 28 for Keploy.
Stalwart Mail Server is growing faster right now (+660 stars in 30 days).
Keploy details →Stalwart Mail Server details →
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