Mail-in-a-BoxvsZed Attack Proxy (ZAP)
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Mail-in-a-Box | Zed Attack Proxy (ZAP) | |
|---|---|---|
| Score | 72/100 | 80/100 |
| Rank in category | #3 of 16 in Mail Server | #4 of 78 in Security |
| GitHub stars | 15 447 | 16 060 |
| Stars, last 30 days | +29 | +245 |
| Stable releases, 12 months | 4 | 31 |
| Latest release | v77 · 26 Sept 2026 | w2026-10-23 · 23 Oct 2026 |
| Setup | Moderate | Easy |
| Official Docker image | No | Yes |
| License | CC0-1.0 | Apache-2.0 |
| Main language | Python | Java |
Which one should you pick?
Zed Attack Proxy (ZAP) scores 80/100 against 72/100 for Mail-in-a-Box, so it is the safer default.
Zed Attack Proxy (ZAP) ships more often: 31 stable releases in the past year, against 4 for Mail-in-a-Box.
If you want the quickest setup, Zed Attack Proxy (ZAP) is easier to run; Mail-in-a-Box needs more configuration.
Zed Attack Proxy (ZAP) is growing faster right now (+245 stars in 30 days).
Mail-in-a-Box details →Zed Attack Proxy (ZAP) details →
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