Compare software

MailuMailEnable
Free

Free and open source.

 Freemium

A free Standard edition, with paid Professional, Enterprise and Premium editions and…

Linux, Self-hosted Windows, Self-hosted
  • Webmail and admin interface included
  • Per-domain delegation and quotas
  • Webmail, IMAP and Exchange ActiveSync for mobile devices
  • CalDAV and CardDAV for calendars and contacts
  • Requires Docker
  • Releases are infrequent
  • Windows servers only
  • Collaboration features are in the paid editions
Self-hosted Downloadable app, Self-hosted
Open source Closed 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

Checked September 24, 2026

Checked October 1, 2026

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