hMailServer is #7 in Top 10 Email Servers

https://www.hmailserver.com/

hMailServer is a free, open source, e-mail server for Microsoft Windows. It's used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world.

Positions in ratings

#7 in Top 10 Email Servers

Alternatives

The best alternatives to hMailServer are: MailEnable, Microsoft Exchange, Zimbra, Postfix, Mdaemon, iRedMail