Compare software

b1gMailSmarterMail
Free

Free and open source under the GPL-2.0 licence.

 Freemium

Can be downloaded for free, with paid licences available to buy.

Web, Self-hosted Windows, Linux, Web, Self-hosted
  • Runs on shared web hosting with PHP and MariaDB
  • Web admin panel for managing users and the service
  • Native MAPI support for Outlook without plug-ins
  • Calendars, contacts, tasks, chat and meetings included
  • Shared-hosting mode relies on POP3 catch-all mailboxes
  • Community site and documentation are partly in transition from the old website
  • Proprietary, closed-source software
  • Running a mail server requires ongoing administration
Self-hosted Downloadable app, Self-hosted
Open source Closed source
License: GPL-2.0 License not stated
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 2, 2026

Checked October 1, 2026

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