Alternatives to Mercury Mail Transport System for all platforms with any license



Web / Online

Indie / Classic

Other Platforms

  • G Suite icon

    G Suite

    G Suite (formerly Google Apps for Work) is Google's encompassing selection of cloud apps for business, including customizable...

    Commercial Mac Windows Linux Web / Cloud Chrome OS

  • Dovecot icon


    Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with security primarily in mind. Dovecot is...

    Open Source Mac Linux

  • Microsoft Exchange Server icon

    Microsoft Exchange Server

    Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Microsoft...

    Commercial Windows Web / Cloud

  • hMail Server icon

    hMail Server

    hMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and...

    Open Source Windows

  • iRedMail icon


    A fully fledged, free email server solution, an open source project (GPL v2). Use official binary packages from Linux/BSD...

    Open Source Linux BSD Self-Hosted

  • Kerio Connect icon

    Kerio Connect

    Kerio Connect makes email, calendars, contacts and task management easy and affordable. With Kerio Connect, you have immediate, secure...

    Commercial Mac Windows Linux Web / Cloud

  • OpenChange icon


    OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols. Exchange is a...

    Open Source Linux

  • Expanding Communication icon

    Expanding Communication

    Turnkey Solutions for the Enterprise Cloud Installation, Configuration, and Management tools for enterprise email, collaboration...

    Commercial Linux

  • Xeams icon


    Xeams is a secure & powerful mail server for Windows, Linux, Solaris, MacOSX and other flavors or UNIX, which supports SMTP, POP3...

    Free Mac Windows Linux BSD

  • Axigen icon


    Axigen is an integrated email, calendaring & collaboration platform, built on a unique Linux mail server technology, for increased...

    Freemium Windows Linux BSD Self-Hosted Microsoft Office Outlook

  • HyperOffice Email Service icon

    HyperOffice Email Service

    HyperOffices is a Microsoft Exchange alternative with all the messaging features growing business need - custom business email;...

    Commercial Web / Cloud

  • Archiveopteryx icon


    Archiveopteryx stores email in a database and provides access to it through IMAP and more.

    Open Source Mac Linux BSD

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