catalog · 3 tools

Communication - Email - Mail Delivery Agents

Sorted by GitHub stars, which measures attention rather than fitness. Read the release date and the commit count next to it before picking one.

Tool	What it is	License	Stars	Last release	Commits 3mo
Dovecot IMAP and POP3 server written primarily with security in mind. MIT, LGPL-2.1 · released 2026-08-28	IMAP and POP3 server written primarily with security in mind.	MIT, LGPL-2.1	1,250	2.4.52026-08-28	495
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. GPL-2.0 · released unknown	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.	GPL-2.0	756	n/ano date	165
Cyrus IMAP Email (IMAP/POP3), contacts and calendar server. BSD-3-Clause-Attribution · released 2026-07-15	Email (IMAP/POP3), contacts and calendar server.	BSD-3-Clause-Attribution	647	cyrus-imapd-3.8.72026-07-15	750

Tool

Stars

Dovecot

IMAP and POP3 server written primarily with security in mind.

MIT, LGPL-2.1 · released 2026-08-28

1,250

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.

GPL-2.0 · released unknown

756

Cyrus IMAP

Email (IMAP/POP3), contacts and calendar server.

BSD-3-Clause-Attribution · released 2026-07-15

647

All categories · data from awesome-selfhosted, CC BY-SA 3.0