Mail-in-a-BoxvsZulip
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Mail-in-a-Box | Zulip | |
|---|---|---|
| Score | 72/100 | 82/100 |
| Rank in category | #3 of 16 in Mail Server | #1 of 110 in Chat |
| GitHub stars | 15 445 | 26 134 |
| Stars, last 30 days | +27 | +191 |
| Stable releases, 12 months | 4 | 6 |
| Latest release | v77 · 26 Sept 2026 | 12.3 · 21 Sept 2026 |
| Setup | Moderate | Moderate |
| Official Docker image | No | Yes |
| License | CC0-1.0 | Apache-2.0 |
| Main language | Python | Python |
Which one should you pick?
Zulip scores 82/100 against 72/100 for Mail-in-a-Box, so it is the safer default.
Zulip ships more often: 6 stable releases in the past year, against 4 for Mail-in-a-Box.
Zulip is growing faster right now (+191 stars in 30 days).
Mail-in-a-Box details →Zulip details →
Swap a project
Keep Mail-in-a-Box, compare it with
Keep Zulip, compare it with