Mail-in-a-BoxvsmCaptcha
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Mail-in-a-Box | mCaptcha | |
|---|---|---|
| Score | 72/100 | 55/100 |
| Rank in category | #3 of 16 in Mail Server | #32 of 78 in Security |
| GitHub stars | 15 446 | 2 498 |
| Stars, last 30 days | +27 | +5 |
| Stable releases, 12 months | 4 | 0 |
| Latest release | v77 · 26 Sept 2026 | — |
| Setup | Moderate | Moderate |
| Official Docker image | No | Yes |
| License | CC0-1.0 | AGPL-3.0 |
| Main language | Python | Rust |
Which one should you pick?
Mail-in-a-Box scores 72/100 against 55/100 for mCaptcha, so it is the safer default.
Mail-in-a-Box ships more often: 4 stable releases in the past year, against 0 for mCaptcha.
Mail-in-a-Box is growing faster right now (+27 stars in 30 days).
Mail-in-a-Box details →mCaptcha details →
Swap a project
Keep Mail-in-a-Box, compare it with
Keep mCaptcha, compare it with