cobaltvsPostal
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| cobalt | Postal | |
|---|---|---|
| Score | 83/100 | 72/100 |
| Rank in category | #1 of 45 in Download Management | #3 of 16 in Mail Server |
| GitHub stars | 45 601 | 16 899 |
| Stars, last 30 days | +1 791 | +72 |
| Stable releases, 12 months | 0 | 3 |
| Latest release | — | 3.3.7 · 3 Jun 2026 |
| Setup | Easy | Advanced |
| Official Docker image | Yes | Yes |
| License | AGPL-3.0 | MIT |
| Main language | Svelte | Ruby |
Which one should you pick?
cobalt scores 83/100 against 72/100 for Postal, so it is the safer default.
Postal ships more often: 3 stable releases in the past year, against 0 for cobalt.
If you want the quickest setup, cobalt is easier to run; Postal needs more configuration.
cobalt is growing faster right now (+1 791 stars in 30 days).
cobalt details →Postal details →