CryptoHeaven Secure Communication
Send and receive secure and encrypted email. Collaborate with others with the integrated group Instant Messaging and file sharing features. Use secure message boards and securely share documents. HIPAA and GLBA compliant.
602Pro LAN SUITE
Secure mail server with anti-virus & anti-spam, built-in firewall and proxy for controlled Internet sharing. 5 user version is free for commercial and non-commercial use!
Internet Exchange Messaging Server
IEMS 5.1 is a messaging server that runs on Windows and Linux platform. It offers dependable mail storage. Features include disk quota management, file attachment handling support, queue management, protection from unwanted mails & virus attacks.
Personal Mail Server Pro
Fully-featured SMTP/POP3 mail server program with a range of security features and options to use along with any mail client as a personal local SMTP server or as a stand-alone mail server. It works in the logoff mode; SMTP gateways are supported.
Eserv Mail, News, Web, FTP and Proxy Servers
Eserv/2.99 - Mail, News, Web and Proxy Servers - Mail Server (SMTP, IMAP4 and POP3) with antivirus - News Server (NNTP) - Web Server (HTTP) - FTP Server - Proxy Servers (HTTP, FTP, Socks, etc) - Finger Server - Built-in scheduler and dialer