MailuvsUnderstudy
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Mailu | Understudy | |
|---|---|---|
| Score | 69/100 | 48/100 |
| Rank in category | #8 of 106 in Email | #110 of 209 in AI Agents |
| GitHub stars | 7 593 | 465 |
| Stars, last 30 days | +70 | — |
| Stable releases, 12 months | 22 | 0 |
| Latest release | 2024.06.67 · 23 Oct 2026 | — |
| Setup | Moderate | Moderate |
| Official Docker image | No | No |
| License | Other | MIT |
| Main language | Python | Typescript |
Which one should you pick?
Mailu scores 69/100 against 48/100 for Understudy, so it is the safer default.
Mailu ships more often: 22 stable releases in the past year, against 0 for Understudy.
Mailu is growing faster right now (+70 stars in 30 days).
Mailu details →Understudy details →
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