Servers

Incoming - Courier

Incoming - Dovecot

Incoming - hMailServer

Incoming - MailEnable

Incoming - MDaemon

Incoming - Microsoft Exchange

Incoming - SmarterMail

Incoming - Zimbra

Outgoing - Courier

Outgoing - Exim

Outgoing - hMailServer

Outgoing - MailEnable

Outgoing - MDaemon

Outgoing - Microsoft Exchange

Outgoing - Postfix

Outgoing - Sendmail

Outgoing - Simple Mail Transport Protocol (IIS)

Outgoing - SmarterMail

Outgoing - Zimbra