Docker EnginevsPostal
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Docker Engine | Postal | |
|---|---|---|
| Score | 80/100 | 72/100 |
| Rank in category | #1 of 11 in Container Orchestration | #3 of 16 in Mail Server |
| GitHub stars | 72 224 | 16 899 |
| Stars, last 30 days | +91 | +72 |
| Stable releases, 12 months | 17 | 3 |
| Latest release | docker-v29.9.2 · 20 Oct 2026 | 3.3.7 · 3 Jun 2026 |
| Setup | Advanced | Advanced |
| Official Docker image | No | Yes |
| License | Apache-2.0 | MIT |
| Main language | Go | Ruby |
Which one should you pick?
Docker Engine scores 80/100 against 72/100 for Postal, so it is the safer default.
Docker Engine ships more often: 17 stable releases in the past year, against 3 for Postal.
Docker Engine details →Postal details →
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