# Calibre Web vs Postal

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

| | Calibre Web | Postal |
|---|---|---|
| Score | 78/100 ✓ | 72/100 |
| Rank in category | #1 of 7 in E-book Management | #3 of 16 in Mail Server |
| GitHub stars | 18 483 ✓ | 16 898 |
| Stars, last 30 days | +252 ✓ | +74 |
| Stable releases, 12 months | 2 | 3 ✓ |
| Latest release | 0.6.27 · 8 Aug 2026 ✓ | 3.3.7 · 3 Jun 2026 |
| Setup | Easy ✓ | Advanced |
| Official Docker image | No | Yes ✓ |
| License | GPL-3.0 | MIT |
| Main language | Fluent | Ruby |

## Which one should you pick?

Calibre Web scores 78/100 against 72/100 for Postal, so it is the safer default.

Postal ships more often: 3 stable releases in the past year, against 2 for Calibre Web.

If you want the quickest setup, Calibre Web is easier to run; Postal needs more configuration.

Calibre Web is growing faster right now (+252 stars in 30 days).

## Details

- [Calibre Web](https://selfhost.directory/project/calibre-web) (markdown: https://selfhost.directory/project/calibre-web.md)
- [Postal](https://selfhost.directory/project/postal) (markdown: https://selfhost.directory/project/postal.md)

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Source: https://selfhost.directory/compare/calibre-web-vs-postal