Alternatives to Microsoft Exchange Server for Windows with any license

  • G Suite

    G Suite (formerly Google Apps for Work) is Google's encompassing selection of cloud apps for business, including customizable products under custom domain names. It...

    Commercial Mac Windows Linux Web Chrome OS

    G Suite icon
  • Kopano

    Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface. Kopano helps you work smarter with people within and outside...

    Commercial Mac Windows Linux Web Android ... iPhone Android Tablet Windows Phone iPad Microsoft Office Outlook S/MIME

    Kopano icon
    • Kopano has scalable backend and can do full MAPI server and clientside. The Webapp and Deskapp has intuitive and modern UI/UX. hn1Jan 2017 • 1 agrees and 0 disagrees Disagree   Agree
    • I tried a lot of MS alternatives, OX, Zimbra, Zentyal, but what fits most with Outlook Sync was the new Kopano, it's more flexible. You can use the web app or desktop app too. Guest • Jan 2017 • 1 agrees and 1 disagrees Disagree   Agree
    • OpenSource, better to maintain, "not Microsoft" Guest • Jan 2017 • 1 agrees and 1 disagrees Disagree   Agree
    • Scalable, open source with a great UX and it has all the features I need bobspFeb 2017 Disagree   Agree
    • Stable and cheap backend, flexible frontend support, open source, in full control of your data marcskiFeb 2017 Disagree   Agree
  • Zarafa

    Open Source Collaboration, providing integration with your existing Linux mailserver, native mobile phone support, Outlook "Look & Feel" webaccess and...

    Commercial Mac Windows Linux Web

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    • Discontinued "Last year we released the announcement that Zarafa customers could transition to Kopano. We also announced that Zarafa would not be maintained beyond May 1st, 2017. Most ZCP customers have moved to a Kopano subscription now."
  • Axigen

    Axigen provides a multi-tenant, fully integrated, multi-platform, all-in-one email, calendaring and collaboration messaging solution. It grants extensive branding...

    Commercial Mac Windows Linux BSD Self-Hosted ... Microsoft Office Outlook

    Axigen icon
    • Axigen is so much easier to use, it has the on-premise solution, and has unbeatable prices! MenoetiusJun 2017 Disagree   Agree
  • atmail

    Atmail allows you to choose between on-premises or cloud deployment. Features include email, contact, calendar, task, storage, synchronisation and provisioning. ...

    Commercial Mac Windows Linux Android iPhone ... Android Tablet iPad

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  • iMail

    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...

    Free Windows Self-Hosted

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    iMail icon
  • Mercury Mail Transport System

    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...

    Free Personal Windows

    No features added Add a feature

    Mercury Mail Transport System icon
  • PowerMTA

    Email gateway application (SMTP server) that makes it easy for senders to adopt the latest authentication specifications ( SPF and DKIM) to comply with changing ISP...

    Commercial Windows Linux Self-Hosted

    No features added Add a feature

    PowerMTA icon
  • Xeams

    Xeams is a secure and powerful mail server for that includes a powerful spam filtering engine that eliminates up to 99% of junk email right out of the box. The software...

    Free Personal $ $ $ Mac Windows Linux BSD

    No features added Add a feature

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  • Mailsite

    MailSite Email Servers provide high quality,easy to use email solutions for businesses, enterprises and service providers that require secure, scalable email hosting...

    Commercial Windows Web Android iPhone Android Tablet

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