The second open-source mail server that can be recommended is hMailServer. It is a fully functional email server with functional similarities to those in iRedMail. However, it only supports Windows Servers. hMailServer is compatible with widely used email protocols (IMAP, SMTP, and POP3). It provides spam protection using external anti-spam software like ASSP and SpamAssassin. hMailServer offers full support for webmail clients.

Software Key Features:



  • hMailServer has unique Antispam features. 
  • It supports SMTP and IMAP.
  • It has many features that help you to collaborate on different projects. 
  • You can sync it with webmail

Software Suites for?

Small Business, Medium Sized Business, Large Business

Open Source


Is it cloud based?


Technical Support

Phone Support, Knowledge Base

Multi Language Support


Desktop OS Support

Web App, Windows, Macintosh

Mobile Platform

IOS, Android, Windows Mobile, Black Berry

Mobile Support


API Support

Yes - API Available

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