Blackbox exportervsStalwart Mail Server
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Blackbox exporter | Stalwart Mail Server | |
|---|---|---|
| Score | 70/100 | 78/100 |
| Rank in category | #3 of 51 in Monitoring & observability | #2 of 16 in Mail Server |
| GitHub stars | 5 922 | 15 451 |
| Stars, last 30 days | +16 | +667 |
| Stable releases, 12 months | 3 | 30 |
| Latest release | v0.29.1 · 21 Oct 2026 | v1.0.0 · 26 Oct 2026 |
| Setup | Easy | Moderate |
| Official Docker image | Yes | 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 70/100 for Blackbox exporter, so it is the safer default.
Stalwart Mail Server ships more often: 30 stable releases in the past year, against 3 for Blackbox exporter.
If you want the quickest setup, Blackbox exporter is easier to run; Stalwart Mail Server needs more configuration.
Stalwart Mail Server is growing faster right now (+667 stars in 30 days).
Blackbox exporter details →Stalwart Mail Server details →
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