# Postal vs SpacetimeDB

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

| | Postal | SpacetimeDB |
|---|---|---|
| Score | 72/100 | 75/100 ✓ |
| Rank in category | #3 of 16 in Mail Server | #7 of 38 in Databases |
| GitHub stars | 16 899 | 25 403 ✓ |
| Stars, last 30 days | +72 | +81 ✓ |
| Stable releases, 12 months | 3 | 7 ✓ |
| Latest release | 3.3.7 · 3 Jun 2026 | v2.13.0 · 19 Oct 2026 ✓ |
| Setup | Advanced | Moderate ✓ |
| Official Docker image | Yes | Yes |
| License | MIT | Other |
| Main language | Ruby | Rust |

## Which one should you pick?

SpacetimeDB scores 75/100 against 72/100 for Postal, so it is the safer default.

SpacetimeDB ships more often: 7 stable releases in the past year, against 3 for Postal.

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

## Details

- [Postal](https://selfhost.directory/project/postal) (markdown: https://selfhost.directory/project/postal.md)
- [SpacetimeDB](https://selfhost.directory/project/spacetimedb) (markdown: https://selfhost.directory/project/spacetimedb.md)

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Source: https://selfhost.directory/compare/postal-vs-spacetimedb