Thunderbird Alternatives for Windows

    There are many alternatives to Thunderbird for Windows if you are looking to replace it. The most popular Windows alternative is Small eM Client iconeM Client, which is free. If that doesn't suit you, our users have ranked more than 50 alternatives to Thunderbird and many of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Thunderbird are Small Microsoft Office Outlook iconMicrosoft Office Outlook (Paid), Small Claws Mail iconClaws Mail (Free, Open Source), Small Mailbird iconMailbird (Paid) and Small SeaMonkey iconSeaMonkey (Free, Open Source).

    The list of alternatives was last updated Dec 10, 2020

    • eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts and chat.
      Most users think this is a great alternative to Thunderbird.
      • Freemium
      • Mac
      • Windows
      Gu
      Thunderbird is brutal, emClient is clean, neat, well thought out, etc. It works with Exchange, Gmail, etc. Everything in one install. Drop in replacement for Outlook at a fraction of the price for Business.
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      Positive comment • more than a year ago 7 users agree and 2 don't

      Gu
      Renders HTML mail very slowly on Win10
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      Negative comment • more than a year ago 9 users agree

      Gu
      Slow on rendering most email. My version of it doesn't show well unread new message : I can't tell if it's too slow or if it just fails to display them at all.
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      Negative comment • more than a year ago 4 users agree and 1 doesn't

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      3 of 8
    • Part of the Microsoft Office Suite, Outlook is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.
      Some users think this is a great alternative to Thunderbird, some doesn't.
      • Mac
      • Windows
      • Online
      • Android
      • iPhone
      • Android Tablet
      • Windows Phone
      • iPad
      • Apple Watch
      • Android Wear
      Gu
      It works. Much less buggy. Better integration with Windows. Encryption/Signing.Works over remote desktop without losing pieces of itself. Search is crappier though.
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      Positive comment • 12 months ago 4 users agree and 3 don't

      Gu
      outlook is clumsy and bloated and does nothing well. tbird does one thing and well.
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      Negative comment • 8 months ago 9 users agree and 8 don't

      Eyji804137
      As a Firefox user, I have tried to love Thunderbird but it just can't compete with Outlook, IMHO.
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      Positive comment • more than a year ago 22 users agree and 20 don't



    • Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated interface
      Most users think this is a great alternative to Thunderbird.
      • Free • Open Source
      • Windows
      • Linux
      • BSD
      3psilon504351
      It's a good, lightweight alternative, but the UI is clunky and it misses HTML message composing. You have been warned!
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      Positive comment • more than a year ago 16 users agree and 2 don't

      jo
      Despite the style, Claws is super fast and allow you to programs it with Perl and Python which is great for marketing automation.
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      Positive comment • more than a year ago 9 users agree and 1 doesn't

      Gu
      No HTML compose is the only reason I don't switch to it. We're not in 1980 anymore.
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      Negative comment • more than a year ago 34 users agree and 23 don't

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      3 of 6
    • Mailbird is more than just another email client - It's an all-in-one communication platform for email, contacts, calendar, apps, task management, video meetings and much more. Try it free, today.
      Some users think this is a great alternative to Thunderbird, some doesn't.
      • Windows
      Gu
      Mailbird is missing most of the features which Thunderbird offers, like encryption and plugins
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      Negative comment • more than a year ago 19 users agree and 9 don't

    • 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.
      Almost everyone thinks this is a great alternative to Thunderbird.
      • Free • Open Source
      • Mac
      • Windows
      • Linux
      • BSD
      • PortableApps.com
      Gu
      SeaMonkey is both a WEB BROWSER and EMAIL CLIENT. It's the successor of Mozilla Application Suite or Netscape Communicator, resp. Further it includes also a news client program, an HTML editor (SeaMonkey Composer) and an IRC client (ChatZilla).
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      Positive comment • more than a year ago 23 users agree and 5 don't

      Gu
      More of a web browser than an email client
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      Negative comment • more than a year ago 15 users agree and 21 don't

    • 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.
      This alternative is disputed. It's still a legitimate alternative, but it might have issues that some users think are important.
      • Freemium
      • Mac
      • Windows
      • Linux
      • Arch Linux
      • Fedora
      • Ubuntu
      Gu
      Need to create an account on a third-party company to access your email.
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      Negative comment • more than a year ago 53 users agree and 7 don't

      ri
      Simple, more streamlined UI and easily customizable.
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      Positive comment • more than a year ago 5 users agree and 3 don't

      3psilon630435
      Great alternative, especially for casual users. Simple, streamlined UI, feels fresh.
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      Positive comment • more than a year ago 1 users agree and 2 don't

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      3 of 6
    • Postbox is an email application that helps you organize your work life and get stuff done.
      Most users think this is a great alternative to Thunderbird.
      • Mac
      • Windows
      Ja
      If you're using Windows 10 or a Mac, Postbox is hard to beat. I found myself so impressed with the trial that I had to buy the license in the end. It started out looking a lot like Thunderbird, but it really has come into its own over the past few years to the point where Thunderbird has nothing on Postbox.
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      Positive comment • 10 months ago 0 users agree and 1 doesn't

    • BlueMail is a modern, mobile first, powerful Email management tool with a sleek design, unified inbox and support for all your accounts: IMAP,Exchange,POP3.
      Some users think this is a great alternative to Thunderbird, some doesn't.
      • Free Personal
      • Mac
      • Windows
      • Linux
      • Android
      • iPhone
      • Chrome OS
      • Android Tablet
      • iPad
      • Apple Watch
      Gu
      bluemail pushes all your mail into their clud making it insecure
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      Negative comment • more than a year ago 22 users agree and 2 don't

      Gu
      It works on Android, but is not so powerfull.
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      Positive comment • more than a year ago 5 users agree and 5 don't

      Gu
      clear, easy to use lots of flexibility
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      Positive comment • more than a year ago 8 users agree and 10 don't

    • Mutt is a small but very powerful text-based mail client for Unix operating systems.
      Most users think this is a great alternative to Thunderbird.
      No screenshots yet
      • Free • Open Source
      • Mac
      • Windows
      • Linux
      • Xfce
      Gu
      Thunderbird users want a GUI mail application. Mutt is a command line mail application. They are both good and both popular, but very much apples and oranges.
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      Negative comment • 9 months ago 10 users agree and 2 don't

    • Windows 10 has Mail and Calendar apps already built in.
      Most users think this is a great alternative to Thunderbird.