Mail-in-a-BoxvsSpacetimeDB
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Mail-in-a-Box | SpacetimeDB | |
|---|---|---|
| Score | 72/100 | 75/100 |
| Rank in category | #3 of 16 in Mail Server | #7 of 38 in Databases |
| GitHub stars | 15 446 | 25 403 |
| Stars, last 30 days | +27 | +81 |
| Stable releases, 12 months | 4 | 7 |
| Latest release | v77 · 26 Sept 2026 | v2.13.0 · 19 Oct 2026 |
| Setup | Moderate | Moderate |
| Official Docker image | No | Yes |
| License | CC0-1.0 | Other |
| Main language | Python | Rust |
Which one should you pick?
SpacetimeDB scores 75/100 against 72/100 for Mail-in-a-Box, so it is the safer default.
SpacetimeDB ships more often: 7 stable releases in the past year, against 4 for Mail-in-a-Box.
SpacetimeDB is growing faster right now (+81 stars in 30 days).
Mail-in-a-Box details →SpacetimeDB details →
Swap a project
Keep Mail-in-a-Box, compare it with
Keep SpacetimeDB, compare it with