Firefox AlternativesOnly apps categorised as Email Clients

The best Email Client alternative to Mozilla Firefox is Vivaldi, which is free. If that doesn't suit you, our users have ranked more than 100 alternatives to Mozilla Firefox and three of them are Email Clients so hopefully you can find a suitable replacement. Other interesting Email Client alternatives to Mozilla Firefox are SeaMonkey and Iceape-UXP.

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Most Mozilla Firefox alternatives are Web Browsers, but you can also narrow the list to Email Clients or IRC Clients. Other popular filters are iPhone, Kindle Fire, Mac, Windows and Linux. You can also filter for EU-based alternatives if you prefer software from the European Union.
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Alternatives
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Alternatives list

  1. Vivaldi icon

    Vivaldi

     1324 likes

    Flexible browser featuring deep customization, integrated ad and tracker blocking, Chromium compatibility, powerful tab management tools, note sync, screenshot utility, custom web panels, theme and toolbar editing, plus support for Android, iOS, desktop, and privacy protections.

    203 Vivaldi alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • openSUSE
    • Snapcraft
    • Android Auto
    • Flathub
    • Samsung Galaxy Store
    • Fedora
    • Ubuntu
    • Debian
    • NO flagNorway
    Vivaldi screenshot 1
    Good alternative?
     
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    42
  2. SeaMonkey icon

    SeaMonkey

     250 likes

    Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the open source Mozilla Gecko engine, the same code which underlies Thunderbird and is the base for the Firefox browser.

    196 SeaMonkey alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    • DE flagGermany
    • European Union flagEU
    SeaMonkey screenshot 1
    Good alternative?
     
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    12
  4. Iceape-UXP icon

    Iceape-UXP

     Like

    Historically, Iceape was a re-branding of SeaMonkey by the Debian project. However, Debian discontinued Iceape in December 2013 citing security concerns and lack of a maintainer.

    125 Iceape-UXP alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    Good alternative?
     
3 of 3 Mozilla Firefox alternatives