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Mailcowvsrustmailer

Two self-hosted Email projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

Mailcowrustmailer
Score77/10044/100
Rank in category#2 of 106 in Email#81 of 106 in Email
GitHub stars13 713514
Stars, last 30 days+215—
Stable releases, 12 months169
Latest release2026-10 · 21 Oct 20261.7.6 · 16 Oct 2026
SetupAdvancedModerate
Official Docker imageNoYes
LicenseGPL-3.0Other
Main languageJavaScriptRust

Which one should you pick?

Mailcow scores 77/100 against 44/100 for rustmailer, so it is the safer default.

Mailcow ships more often: 16 stable releases in the past year, against 9 for rustmailer.

If you want the quickest setup, rustmailer is easier to run; Mailcow needs more configuration.

Mailcow is growing faster right now (+215 stars in 30 days).

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