Alternatives to Atmail Email Server for Linux with any license

  • Mailpile icon

    Mailpile

    Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an...

    Open Source Mac Windows Linux Web / Cloud Self-Hosted

  • G Suite icon

    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 features traditional office tools through Google Docs as well as...

    Commercial Mac Windows Linux Web / Cloud Chrome OS

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  • Zimbra Desktop icon

    Zimbra Desktop

    The free Zimbra Desktop client allows you to meld the online and offline worlds – storing and synching your email, calendar, contacts, files and documents in the cloud, yet having them locally accessible when on the road. Zimbra...

    Free Personal Mac Windows Linux

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  • Zimbra Collaboration Suite icon

    Zimbra Collaboration Suite

    Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically...

    Freemium Linux Web / Cloud

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  • 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 (SMTP) used for email transport over the Internet. A descendant...

    Open Source Mac Linux

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  • Simple Mail icon

    Simple Mail

    Simple Mail is a mail client for Firefox. It allows you to get notified, read and write messages for multiple email accounts inside Firefox. Usage: Configure one or more accounts in Preferences, set account refresh time and get...

    Free Mac Windows Linux Firefox

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  • OBM icon

    OBM

    OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.

    Open Source Mac Windows Linux

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  • atmail icon

    atmail

    Atmail allows you to choose between on-premises or cloud deployment. Features include email, contact, calendar, task, storage, synchronisation and provisioning. It's extensible through a RESTful API and allows easy rebranding...

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

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  • Citadel

    Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In order to modernize the Citadel platform for the Internet, the Citadel/UX developers added...

    Open Source Linux Web / Cloud

    No features added Add a feature
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  • 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 policies for accountable outbound email delivery. No over hype. It...

    Commercial Windows Linux Self-Hosted

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  • nvlope icon

    nvlope

    Simple and minimal email with custom domain and own API.

    Commercial Mac Windows Linux

    No features added Add a feature
    • Discontinued Website down, twitter deleted.
  • Kopano 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 your organization. A single interface gives you email, contacts...

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

  • Pluxmail.com icon

    Pluxmail.com

    Pluxmail is a luxury email solution where you receive an excellent service and can profit a lot by reselling the service

    Commercial Mac Windows Linux Web / Cloud Android iPhone ... iPad

    No features added Add a feature