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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Mozilla Firefox alternatives are mainly Web Browsers, but if you're looking for Email Clients or IRC Clients you can filter on that. Other popular filters include iPhone, Kindle Fire, Mac, Linux, Android, Integrated into iOS and Open Source. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Mozilla Firefox.
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Alternatives list

  1. Vivaldi icon

    Vivaldi

     1276 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.

    186 Vivaldi alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Snapcraft
    • Android Auto
    • Flathub
    • HUAWEI AppGallery
    • Samsung Galaxy Store
    The only web browser powerful enough for you!
     
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    42
    Vivaldi vs Mozilla Firefox Comments
    Top Positive Comment
    architsastam
    5

    Vivaldi is simply the next stop for Firefox users, while it is freeware, it is technically closed and open-source. Some of the browser's components are closed while some are open and the source codes are available on Vivaldi's website.

    Top Negative Comment
    headlines
    14

    There's no good reason to use a closed source browser like Vivaldi when there are so many open source alternatives on this page.

    Matt
    Positive
    1

    Non-AI browser by humans for humans. Only knock is that it's chromium-based

    3 of 42 comments
    • Vivaldi is Free and ProprietaryMozilla Firefox is Free and Open Source
  2. SeaMonkey icon

    SeaMonkey

     241 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.

    185 SeaMonkey alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    SeaMonkey screenshot 1
     
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    11
    SeaMonkey vs Mozilla Firefox Comments
    Top Positive Comment
    mzs_47
    2

    Lighter on resources, had UI we were used to in old Firefox(version 3.x), some features like webRTC might be missing.

    Top Negative Comment
    dabockster
    1

    Based on an outdated version of Firefox. Has trouble rendering most websites. Can also crash more.

    solandre-wyze-ap-shelta
    Positive
    0

    Useful as a fallback and for testing things.

    3 of 11 comments
    • SeaMonkey is Free and Open SourceMozilla Firefox is also Free and Open Source
  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.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
     
3 of 3 Mozilla Firefox alternatives