# Mail-in-a-Box vs Unregistry

> 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.

## Details

- [Mail-in-a-Box](https://selfhost.directory/project/mail-in-a-box) (markdown: https://selfhost.directory/project/mail-in-a-box.md)
- [Unregistry](https://selfhost.directory/project/unregistry) (markdown: https://selfhost.directory/project/unregistry.md)

---
Source: https://selfhost.directory/compare/mail-in-a-box-vs-unregistry