Low cost, easy to use Email Server software for virtual, on-premise, or hosted deployments for companies that want control of their email. Integrated web-mail with doc sharing, Drop Box integration, client and server side encryption.




Emails is described as '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' and is a Mail Server in the office & productivity category. There are more than 10 alternatives to Emails for a variety of platforms, including Linux, Windows, Self-Hosted, Mac and BSD apps. The best Emails alternative is Roundcube, which is both free and Open Source. Other great apps like Emails are mailcow: dockerized, hMail Server, Microsoft Exchange and Axigen.
Low cost, easy to use Email Server software for virtual, on-premise, or hosted deployments for companies that want control of their email. Integrated web-mail with doc sharing, Drop Box integration, client and server side encryption.




Kerio Connect makes email, calendars, contacts and task management easy and affordable. With Kerio Connect, you have immediate, secure access to your communications anytime, anywhere, on any device - without complexity or expensive overhead.

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.
MailEnables mail server software provides a powerful, scalable hosted messaging platform for Microsoft Windows.
Turnkey Solutions for the Enterprise Cloud
Installation, Configuration, and Management tools for enterprise email, collaboration, messaging, video conferencing, file sharing, and file transfers.

Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows server and database server required, unlimited mail accounts, storage, attachment size, custom logo. Free for commercial use.


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.




atmail is the most popular Android, iPhone, iPad & Android Tablet alternative to Emails.
Sanwhole Exchange is a server running iMail, iPress and iStore services. iMail is an enterprise-class email server does Microsoft Exchange and Gmail work. iPress sets blog, forums and tickets in one. iStore is an online store.



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.
EmailSuccess, an advanced SMTP Server (MTA) built from the ground up to handle the most critical reliability, performance, security, and deliverability requirements.




Mox is a modern full-featured open source secure mail server for low-maintenance self-hosted email.



