Thunderbird Alternatives for Windows

There are many alternatives to Thunderbird for Windows if you are looking for a replacement. The best Windows alternative is Claws Mail, which is both free and Open Source. 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 SeaMonkey, Betterbird, Mailbird and eM Client.

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Thunderbird alternatives are mainly Email Clients but may also be Calendar Apps or Group Chat Apps. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Thunderbird.
Thunderbird iconThunderbird
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Cross-platform email client providing POP/IMAP support, robust filtering, multiple accounts, and chat. Extendable via add-ons with RSS/Atom, etc.

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Thunderbird alternatives page was last updated Feb 13, 2025
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Alternatives
  1. Microsoft Outlook icon

    Microsoft Outlook

     397 likes
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    Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.

    131 Microsoft Outlook alternatives

    License model

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    • Android Wear
    Outlook 365 on Windows

    Top Microsoft Outlook Features

    1.  Exchange
    2.  Native application
    3.  Email Organizer
    4.  Calendar Integration
    5.  Calendar View
    6.  Cloud Sync
    7.  Support for @mentions
    8.  Unified inbox
    9.  Multiple Account support
    10.  Works Offline
    11.  Support for Aliases
    12.  Dark Mode

    Microsoft Outlook VS Thunderbird

     
    Comments about Microsoft Outlook as an Alternative to Thunderbird
    Top Positive Comment
    Eyji
    May 23, 2019
    4

    As a Firefox user, I have tried to love Thunderbird but it just can't compete with Outlook, IMHO.

    Top Negative Comment
    LinuxDoge
    Mar 24, 2022
    3

    Not open source, not privacy-focused, no Linux support

    Most Recent Comment
    Guest
    Negative •Jun 12, 2020
    3

    outlook is clumsy and bloated and does nothing well. tbird does one thing and well.

    Show more comments
    3 of 5 comments
    Thunderbird Icon
    Microsoft Outlook icon

    • Some users think Microsoft Outlook is a great Thunderbird alternative, some don't.

    • Microsoft Outlook is the most popular Web-based alternative to Thunderbird.

    • Microsoft Outlook is the most popular commercial alternative to Thunderbird.

    • Microsoft Outlook is Paid and ProprietaryThunderbird is Free and Open Source
  2. Sylpheed icon

    Sylpheed

     62 likes
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    Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).

    44 Sylpheed alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • JP flagJapan

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    Main screen

    Properties

    1.  Lightweight

    Features

    1.  Portable
    2.  Gtk
    3.  POP3 Support
    4.  IMAP Support

    Sylpheed VS Thunderbird

     
    Comments about Sylpheed as an Alternative to Thunderbird
    Guest
    Negative •Apr 6, 2019
    3

    It doesn't encrypt password storage and doesn't have Master Password function

    Thunderbird Icon
    Sylpheed icon

    • Most users think Sylpheed is a great Thunderbird alternative.

    • Sylpheed is Free and Open SourceThunderbird is also Free and Open Source
    • Sylpheed is LightweightThunderbird is not according to our users
  4. Mutt icon

    Mutt

     68 likes
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    Mutt is a small but very powerful text-based mail client for Unix operating systems. Some of its features are: color support, message threading, MIME support (including RFC2047 support for encoded headers), PGP/MIME (RFC2015), various features to support mailing lists, including...

    53 Mutt alternatives

    License model

    • Free • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Xfce
    Mutt screenshot 1

    Mutt Features

    1.  Tui
    2.  PGP Encryption
    3.  Console-based
    4.  Text-based
    5.  Command line interface
    6.  IMAP Support
    7.  POP3 Support
    8.  S/MIME Support

    Mutt VS Thunderbird

     
    Comments about Mutt as an Alternative to Thunderbird
    Guest
    Negative •Apr 21, 2020
    17

    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.

    Thunderbird Icon
    Mutt icon

    • Most users think Mutt is a great Thunderbird alternative.

    • Mutt is Free and Open SourceThunderbird is also Free and Open Source
  5. Ad
    Screenshot
    Mailbird icon
    Mailbird

    Streamline your email experience by managing multiple accounts, integrating apps like Slack and Google Calendar, and using AI-driven features like drafting and spam prevention. Customize your workspace with themes, notifications,...

    https://www.getmailbird.com
    Learn More
  6. BlueMail icon

    BlueMail

     32 likes
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    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.

    29 BlueMail alternatives

    License model

    • Free Personal • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Apple Watch
    BlueMail screenshot 1
    BlueMail screenshot 2
    BlueMail screenshot 3

    Properties

    1.  Lightweight

    Features

    1.  Unified inbox
    2.  IMAP Support
    3.  Ad-free
    4.  GDPR Compliant
    5.  Multiple Account support
    6.  Calendar Integration
    7.  POP3 Support

    BlueMail VS Thunderbird

     
    Comments about BlueMail as an Alternative to Thunderbird
    Most Recent Comment
    Guest
    Negative •Oct 30, 2019
    25

    bluemail pushes all your mail into their clud making it insecure

    Guest
    Positive •Sep 13, 2019
    0

    It works on Android, but is not so powerfull.

    Guest
    Positive •Dec 16, 2018
    -2

    clear, easy to use lots of flexibility

    Thunderbird Icon
    BlueMail icon

    • Most users think BlueMail is a great Thunderbird alternative.

    • BlueMail is Free Personal and ProprietaryThunderbird is Free and Open Source
    • BlueMail is LightweightThunderbird is not according to our users
  7. Canary Mail icon

    Canary Mail

     25 likes
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    Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!

    61 Canary Mail alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    Canary Mail screenshot 1

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  End-to-End Encryption
    2.  Unified inbox
    3.  PGP Encryption
    4.  Multiple Account support
    5.  AI-Powered
    6.  GPG Encryption
    7.  Dark Mode
    8.  No Tracking
    9.  Cloud Sync
    10.  Ad-free
    11.  Reminders
    12.  Encrypted Email

    Canary Mail VS Thunderbird

     
  8. TypeApp icon

    TypeApp

     30 likes
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    TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts.

    59 TypeApp alternatives

    License model

    • Free Personal • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Android Wear
    • Kindle Fire
    TypeApp screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  Unified inbox
    2.  Email Organizer
    3.  Multiple Account support
    4.  Live Push Notifications
    5.  Exchange

    TypeApp VS Thunderbird

     
    Comments about TypeApp as an Alternative to Thunderbird
    Guest
    Positive •Jun 20, 2017
    2

    Professional looking interface, options available at a swipe of the finger tip. Very slick app.

    Thunderbird Icon
    TypeApp icon

    • Most users think TypeApp is a great Thunderbird alternative.

    • TypeApp is Free Personal and ProprietaryThunderbird is Free and Open Source
    • TypeApp is Privacy focusedThunderbird is not according to our users
  10. Wino Mail icon

    Wino Mail

     7 likes
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    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.

    20 Wino Mail alternatives

    License model

    • Freemium • Open Source

    Application type

    Country of Origin

    • TR flagTürkiye

    Platforms

    • Windows
    Wino Mail screenshot 1

    Properties

    1.  Lightweight
    2.  Support for Themes

    Features

    1.  Multiple Account support
    2.  Dark Mode
    3.  Ad-free
    4.  Gmail
    5.  Spam Filter
    6.  No Tracking
    7.  Unified inbox
    8.  Email Organizer
    9.  Works Offline
    10.  Windows UWP
    11.  Native application
    12.  Bundled with Windows

    Wino Mail VS Thunderbird

     
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