HEATKEYS

MailEnable provides robust and powerful software for the transmission of email and communication.

SmarterTools develops mail server software, help desk software, and web analytics for small businesses, web hosts, and ISPs.

Axigen is an integrated email, calendaring & collaboration platform, built on a unique Linux mail server technology, for increased speed & security.

Alt-N Technologies’ SMTP/POP3 Mail Server Software/Appliance, Email Spam Firewall for Exchange/SMTP Servers, Fax Server Manager for Windows

Advanced server software solutions for today

SMTP, POP3, IMAP secure Windows email server software. Webmail. Smartphone mail server software. Groupware email server: calendars and contacts. Great support. Anti-spam and virus.

IceWarp Unified Communications Server is a fully integrated email server, webmail server, groupware, instant messaging, VoIP / SIP, text messaging.

iRedMail is a free, full featured, easy-to-install, open source email server solution which powered by pure open source software, provides POP3, IMAP, SMTP, anti-virus and advance anti-spam features, works on Red Hat Enterprise Linux, CentOS, Debian ...

Free and open source webmail software for the masses, written in PHP

EVO Mail Server featuring IMAP and Multi-domain SSL, EVO Software Production is proud to present you the world first UTF8-IMAP and UTF8-SMTP mail server: EVO Mail Server.