mdaemon free mail server for windows

AXIGEN Mail Server - (E)SMTP, POP3, IMAP4, Webmail, RPOP, Free support

Mail Server Extractor is an email mining tool that sneaks through mail servers

Bullet-proof SMTP POP3 server software used by corporations and ISP

Integrated Mail and LDAP servers, to provide manageable email solution.

ArGoSoft Mail Server is full SMTP/POP3/Finger server for all Windows platforms.

Courier Mail Server is a e-mail server. Contains Web and SOCKS servers.

Dwarf Mail Server is a full-featured mail server developed on the Java platform.

Dwarf Mail Server is a full-featured mail server developed on the Java platform.

Softalk Mail Server is a fully featured mail server.

Fully-featured SMTP/POP3 mail server program to use along with any mail client.