Blackbox exportervsPostal
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Blackbox exporter | Postal | |
|---|---|---|
| Score | 70/100 | 72/100 |
| Rank in category | #3 of 51 in Monitoring & observability | #3 of 16 in Mail Server |
| GitHub stars | 5 922 | 16 899 |
| Stars, last 30 days | +16 | +75 |
| Stable releases, 12 months | 3 | 3 |
| Latest release | v0.29.1 · 21 Oct 2026 | 3.3.7 · 3 Jun 2026 |
| Setup | Easy | Advanced |
| Official Docker image | Yes | Yes |
| License | Apache-2.0 | MIT |
| Main language | Go | Ruby |
Which one should you pick?
Postal scores 72/100 against 70/100 for Blackbox exporter, so it is the safer default.
If you want the quickest setup, Blackbox exporter is easier to run; Postal needs more configuration.
Postal is growing faster right now (+75 stars in 30 days).
Blackbox exporter details →Postal details →
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