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Dovecot vs Mailu: catalog facts
Dovecot	Mailu
Free Community Edition is free and open source; Dovecot Pro is a paid commercial product.	Free Free and open source.
Linux, Self-hosted	Linux, Self-hosted
Very widely deployed Standards-compliant IMAP and POP3	Webmail and admin interface included Per-domain delegation and quotas
Handles mailbox access only; needs a separate MTA for sending Configuration takes mail server experience	Requires Docker Releases are infrequent
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.