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DavisCyrus IMAP
Free

Free and open source under the MIT licence.

 Free

Free and open source.

Web, Self-hosted Linux, Self-hosted
  • Web dashboard for users, calendars and address books
  • IMAP and LDAP authentication options
  • Mail, calendars and contacts in one server
  • JMAP support alongside IMAP
  • Requires PHP 8.2 or later and a database
  • Single main maintainer
  • Complex to configure compared with all-in-one servers
  • No bundled webmail
Self-hosted Self-hosted
Open source Open source
License: MIT License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked September 24, 2026

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