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


Dovecot is described as 'Open source IMAP and POP3 email server for Linux/UNIX-like systems, written with security primarily in mind. Dovecot n excellent choice for both small and large installations. It's fast, simple to set up, requires no special administration and it uses very' and is an app in the office & productivity category. There are eight alternatives to Dovecot for Mac, Linux, BSD, Self-Hosted and Windows. The best Dovecot alternative is hMail Server, which is both free and Open Source. Other great apps like Dovecot are Cyrus IMAP, Courier IMAP, Mercury Mail Transport System and Archiveopteryx.
hMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world.


The Cyrus IMAP server differs from other IMAP server implementations in that it is generally intended to be run on sealed servers, where normal users cannot log in. Users can access mail through the IMAP/IMAP-S, JMAP, POP3/POP3-S or KPOP protocols.
The Courier IMAP server is a fast, scalable, enterprise IMAP server that uses Maildirs. Many E-mail service providers use the Courier IMAP server to easy handle hundreds of thousands of mail accounts. With its built-in IMAP and POP3 aggregation proxy, the Courier IMAP server has...
The Mercury Mail Transport System is a mail server that sends and receives messages on behalf of a group of users on a machine or local area network. Messages from the outside world are received by Mercury and delivered to the users, who can access it at any later point.
Archiveopteryx is an Internet mail server, optimised to support long-term archival storage. It seeks to make it practical not only to manage large archives, but to use the information therein on a daily basis instead of relegating it to offline storage.
DBMail is a fast, scalable IMAP4 and POP3 server that stores all email and users in a Postgresql, MySQL or SQLite database.
Magma is a fully-featured, commercial-grade email server with support for SMTP, POP3, IMAP, HTTP, and an internal protocol MOLTEN. Support for the DIME ecosystem of advanced encryption protocols is currently in active development. Originally created by Ladar Levison for lavabit.
Simple, easy and secure mail server with a convenient and simple interface. Automatic certificate renewal through Let’s encrypt. Redirect, local storage. IMAP and SMTP.



