Alternatives to AtMail Open for all platforms with Open Source License

  • Roundcube

    Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client...

    Free Open Source Self-Hosted PHP Cloudron

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  • Horde

    Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards...

    Free Open Source Web Self-Hosted

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  • Webmail Lite

    Open Source WebMail Lite is a free community edition of full-featured WebMail Pro server application intended for users who need a clean and simple web mail...

    Free Open Source Web Self-Hosted

    No features added Add a feature

    Webmail Lite icon
  • Sendmail

    Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol...

    Free Open Source Mac Linux

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Platforms

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