Mail servers

• Dovecot is a minimal open-source IMAP and POP3 email server for Linux/ Unix operating systems. It supports different authentication methods, requires minimal memory, and supports Postfix and Exim.

• Cyrus is a robust open-source Linux mail server that offers speed, security and support for dozens of protocols and authentication methods. It is a rich configurable mail-server with a large set of options and third-party integrations.