Cyrus IMAP - Email (IMAP/POP3), contacts and calendar server. (Source Code) BSD-3-Clause-AttributionC
DavMail⚠ - POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users to use any mail/calendar client with an Exchange server, even from the internet or behind a firewall through Outlook Web Access. (Source Code) GPL-2.0Java
Dovecot - IMAP and POP3 server written primarily with security in mind. (Source Code) MIT/LGPL-2.1C/deb
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2025-05-23 17:48:32