Alternatives to Cyrus IMAP for all platforms with Free License

  • Dovecot

    Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with security primarily in mind. Dovecot is an excellent choice for both small...

    Free Open Source Mac Linux

    Dovecot icon
  • Courier IMAP

    The Courier IMAP server is a fast, scalable, enterprise IMAP server that uses Maildirs. Many E-mail service providers use the Courier IMAP server to easy handle hundreds...

    Free Open Source Mac Linux BSD Self-Hosted

    Courier IMAP icon
  • DBMail

    DBMail is a fast, scalable IMAP4 and POP3 server that stores all email and users in a Postgresql, MySQL or SQLite database.

    Free Open Source Mac Linux

    DBMail icon

Platforms

Show 4 less popular platforms