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Courier Mail Server

Integrated mail server with IMAP, POP, and webmail

Mail Servers ★ 13 stars Hard setup GPL-3.0

Courier is an integrated mail server suite that combines an MTA with IMAP, POP3, ESMTP, and webmail components. It provides a complete mail system from a single coordinated project.

Key features

  • Integrated MTA and IMAP
  • Built-in webmail
  • Maildir storage
  • LDAP authentication

Strengths

  • Released under the GPL-3.0 license
  • Written in C
  • Lightweight — runs in 512 MB RAM

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