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Mailu vs docker-mailserver: catalog facts
Mailu	docker-mailserver
Free Free and open source.	Free Free and open source.
Linux, Self-hosted	Linux, Self-hosted
Webmail and admin interface included Per-domain delegation and quotas	Whole mail stack in one container Built-in antispam and antivirus
Requires Docker Releases are infrequent	No webmail or graphical admin interface Needs Docker and DNS knowledge to run well
Self-hosted	Self-hosted
Open source	Open source
License not stated	License not stated
No account needed	No account 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 24, 2026

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