Calibre WebvsPostal
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).
Calibre Web details →Postal details →
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