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MailEnableb1gMail
Freemium

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

 Free

Free and open source under the GPL-2.0 licence.

Windows, Self-hosted Web, Self-hosted
  • Webmail, IMAP and Exchange ActiveSync for mobile devices
  • CalDAV and CardDAV for calendars and contacts
  • Runs on shared web hosting with PHP and MariaDB
  • Web admin panel for managing users and the service
  • Windows servers only
  • Collaboration features are in the paid editions
  • Shared-hosting mode relies on POP3 catch-all mailboxes
  • Community site and documentation are partly in transition from the old website
Downloadable app, Self-hosted Self-hosted
Closed source Open source
License not stated License: GPL-2.0
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 1, 2026

Checked October 2, 2026

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