Alternatives to AtMail Open for all platforms with any license

Platforms

Show 9 less popular platforms
  • Roundcube icon

    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

  • Squirrelmail icon

    Squirrelmail

    SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure...

    Free Open Source Self-Hosted PHP

  • Horde icon

    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

  • Webmail Lite icon

    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

  • NaSMail icon

    NaSMail

    NaSMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in HTML 4.01...

    Free Open Source Web

    No features added Add a feature
  • Sendmail 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

    No features added Add a feature
  • PowerMTA 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
  • Flaskmail icon

    Flaskmail

    Easy to use and secure email hosting solution for any available domain name, including your own.

    Commercial Web

    No features added Add a feature
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  • Thexyz icon

    Thexyz

    Thexyz build the best tools around for email to make your life simple. Continually updating the product offerings to give customers the very best in email and domain...

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