# Kurrier vs Mail-in-a-Box

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

| | Kurrier | Mail-in-a-Box |
|---|---|---|
| Score | 55/100 | 72/100 ✓ |
| Rank in category | #43 of 106 in Email | #3 of 16 in Mail Server |
| GitHub stars | 1 066 | 15 447 ✓ |
| Stars, last 30 days | — | +29 |
| Stable releases, 12 months | 6 ✓ | 4 |
| Latest release | v4.3.0 · 24 Sept 2026 | v77 · 26 Sept 2026 ✓ |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | No | No |
| License | Other | CC0-1.0 |
| Main language | Typescript | Python |

## Which one should you pick?

Mail-in-a-Box scores 72/100 against 55/100 for Kurrier, so it is the safer default.

Kurrier ships more often: 6 stable releases in the past year, against 4 for Mail-in-a-Box.

Mail-in-a-Box is growing faster right now (+29 stars in 30 days).

## Details

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

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