Open Source Spark Mail Alternatives for Windows

There are many alternatives to Spark Mail for Windows if you are looking for a replacement. The best open source Windows alternative is Thunderbird. If that doesn't suit you, our users have ranked more than 50 alternatives to Spark Mail and eight of them are open source and available for Windows so hopefully you can find a suitable replacement. Other interesting open source Windows alternatives to Spark Mail are Mailspring, Claws Mail, Wino Mail and LucaMail.

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Alternatives list

  1. Thunderbird icon

    Thunderbird

     2566 likes

    Cross-platform email client supporting multiple identities, chat, and strong filtering. Extend functionality with add-ons like RSS/Atom feed readers and PGP support.

    88 Thunderbird alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    • AppImageHub
    • Snapcraft
    • Flathub
    • PortableApps.com
    • F-Droid
    • Haiku
    • Homebrew
    • Chocolatey
    Thunderbird screenshot 1
     
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    5
    Thunderbird vs Spark Mail Comments
    Top Positive Comment
    Guest
    1

    There is NO Spark Version for Windows. That's why Thunderbird is the Best Alternative IMO.

    Review by a new / low-activity user.
    Top Negative Comment
    Guest
    10

    works like an old email client, downloading the message and saving in folders. It doesn't work syncing directly online with gmail labels.

    Review by a new / low-activity user.
    hra72
    Positive
    0

    Security & Privacy of Spark is questionable: "Data storage and encryption is secured through Google Cloud service." Thunderbird supports OpenPGP & S/MIME email encryption and is still completely free.

    3 of 5 comments
    • Thunderbird is Free and Open SourceSpark Mail is Freemium and Proprietary
    • Thunderbird is Customizable and Privacy focusedSpark Mail is not according to our users
  2. Mailspring icon

    Mailspring

     114 likes

    Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.

    44 Mailspring alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Arch Linux
    • Fedora
    • Ubuntu
    Clean design with integrated search and swipe gestures
     
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    3
    Mailspring vs Spark Mail Comments
    Thomas Klinger
    0

    I tested it, generally it is ok, but it sometimes does not show new arrivals at the top of the list, even though the counter increases. However, good mail client, which does not need any clumsy registrations somewhere.

    Review by a new / low-activity user.
    Guest
    Positive
    1

    As far as my usage history, the best alternative for spark mail is Mailspring in terms of UI and UX. Though it lacks some features I use Mailspring as my daily driver.

    Review by a new / low-activity user.
    Guest
    Positive
    -1

    It's the most similar, with the features most inline. It even looks the same in appearance, and all the menus and shortcut keys match.

    Review by a new / low-activity user.
    • Mailspring is Freemium and Open SourceSpark Mail is Freemium and Proprietary
    • Mailspring is CustomizableSpark Mail is not according to our users
  4. Claws Mail icon

    Claws Mail

     106 likes

    Email and news client on GTK+ foundation featuring quick performance, extensible plugins, secure protocols, advanced filtering, strong folder and contact management, lightweight design, powerful search, customizable interface, multi-language support, and encryption.

    64 Claws Mail alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Windows
    • Linux
    • BSD
    The main window
     
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    2
    Claws Mail vs Spark Mail Comments
    CyCo
    Negative
    1

    The 90s called, they want their design back

    Thomas Klinger
    Positive
    -2

    It's a little bit old fashioned, but ok, it works.

    Review by a new / low-activity user.
    • Claws Mail is Free and Open SourceSpark Mail is Freemium and Proprietary
    • Claws Mail is Lightweight, Customizable and Privacy focusedSpark Mail is not according to our users
  5. Wino Mail icon

    Wino Mail

     8 likes

    Wino is a lightweight native mail client for Windows 10/11. It is still in active development. Main motivation for this project is to replace Mail & Calendar for Windows with modern Windows design without using web technologies for speed.

    22 Wino Mail alternatives

    Cost / License

    Application type

    Platforms

    • Windows
    Wino Mail screenshot 1
     
  6. LucaMail icon

    LucaMail

     9 likes

    LucaMail is an open source, cross-platform email client. LucaMail is developed to provide cross-platform alternative to Email Clients that are really exists. LucaMail focuses on modern technologies as well as maintaining a user-friendly UI.

    71 LucaMail alternatives

    Cost / License

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    LucaMail screenshot 1
     
  7. Nylas Mail Lives icon

    Nylas Mail Lives

     3 likes

    Nylas Mail Lives is a fork of Nylas Mail that fixes many longstanding issues, improves the client experience, and is committed to publish new releases.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    Nylas Mail Lives screenshot 1
     
  9. Columba icon

    Columba

     6 likes

    Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management tool with features to enhance your productivity and communication.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    Columba screenshot 1
     
  10. Eudora icon

    Eudora

     1 like

    Eudora started in 1988, at the University of Illinois because the internet was a growing and burgeoning place, but email was not really established on the desktop computers that people were using at the time.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
     
8 of 8 Spark Mail alternatives