# Mail-in-a-Box vs unopim

> Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | Mail-in-a-Box | unopim |
|---|---|---|
| Score | 72/100 ✓ | 69/100 |
| Rank in category | #3 of 16 in Mail Server | #1 of 6 in Product Management |
| GitHub stars | 15 446 ✓ | 11 046 |
| Stars, last 30 days | +27 | +47 ✓ |
| Stable releases, 12 months | 4 | 17 ✓ |
| Latest release | v77 · 26 Sept 2026 | v3.1.3 · 29 Sept 2026 ✓ |
| Setup | Moderate | Moderate |
| Official Docker image | No | Yes ✓ |
| License | CC0-1.0 | MIT |
| Main language | Python | PHP |

## Which one should you pick?

Mail-in-a-Box scores 72/100 against 69/100 for unopim, so it is the safer default.

unopim ships more often: 17 stable releases in the past year, against 4 for Mail-in-a-Box.

## Details

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

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