hMailServer is a free, open source mail server for Windows. It has support for SMTP, POP3, IMAP, virtual domains, anti virus scanning, distribution lists and much more. It comes with a great COM library that easily can be used for integration. Data is stored in a database server, MySQL or MS SQL, depending on your choice.
Post By: Nikom Puket
Version: 5.6.3 Build 2249