Postfix - Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

Preferred Patron - Preferred Patron is the top Customer Loyalty Software Program for businesses in any industry of any size.

mailcow - An open source mailserver suite.

Annex Cloud - Reward customers for completing traditional actions such as purchasing, as well as for taking...

Mail-in-a-box - Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.

Five Stars - Discover millions of rewards from thousands of local businesses.