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docker-smtpvsStalwart Mail Server

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

docker-smtpStalwart Mail Server
Score38/10078/100
Rank in category#88 of 106 in Email#2 of 16 in Mail Server
GitHub stars14515 464
Stars, last 30 days—+680
Stable releases, 12 months031
Latest release—v1.0.1 · 28 Oct 2026
SetupEasyModerate
Official Docker imageYesYes
License—AGPL-3.0-only AND LicenseRef-SEL
Main languageShellRust

Which one should you pick?

Stalwart Mail Server scores 78/100 against 38/100 for docker-smtp, so it is the safer default.

Stalwart Mail Server ships more often: 31 stable releases in the past year, against 0 for docker-smtp.

If you want the quickest setup, docker-smtp is easier to run; Stalwart Mail Server needs more configuration.

Stalwart Mail Server is growing faster right now (+680 stars in 30 days).

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