Self-hosted Communication - Email - Mail Delivery Agents

Dovecot

⭐️ 911

IMAP and POP3 server written primarily with security in mind.

Stalwart JMAP

⭐️ 589

JMAP and IMAP server designed to be secure, fast, robust and scalable.

Cyrus IMAP

⭐️ 515

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

Piler

Feature-rich email archiving solution.