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Mailu vs iRedMail: catalog facts
Mailu	iRedMail
Free Free and open source.	Free Free and open source, self-hosted.
Linux, Self-hosted	Linux, Self-hosted
Webmail and admin interface included Per-domain delegation and quotas	Long-established project with broad Linux and BSD distribution support Automates installation of a full mail stack in one script
Requires Docker Releases are infrequent	Requires server administration skills to deploy and maintain Text-based installer is less approachable than fully containerized alternatives
Self-hosted	Self-hosted
Open source	Open source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.