Mail-in-a-BoxvsUnregistry
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Mail-in-a-Box | Unregistry | |
|---|---|---|
| Score | 72/100 | 63/100 |
| Rank in category | #3 of 16 in Mail Server | #4 of 12 in Container Registry |
| GitHub stars | 15 446 | 4 888 |
| Stars, last 30 days | +27 | +21 |
| Stable releases, 12 months | 4 | 4 |
| Latest release | v77 · 26 Sept 2026 | v0.4.3 · 12 Jun 2026 |
| Setup | Moderate | Easy |
| Official Docker image | No | Yes |
| License | CC0-1.0 | Apache-2.0 |
| Main language | Python | Go |
Which one should you pick?
Mail-in-a-Box scores 72/100 against 63/100 for Unregistry, so it is the safer default.
If you want the quickest setup, Unregistry is easier to run; Mail-in-a-Box needs more configuration.
Mail-in-a-Box details →Unregistry details →
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