Thunderbird Alternatives

Thunderbird is described as 'Cross-platform email client providing POP/IMAP support, robust filtering, multiple accounts, and chat. Extendable via add-ons with RSS/Atom, etc' and is a leading Email Client in the office & productivity category. There are more than 50 alternatives to Thunderbird for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Thunderbird alternative is K-9 Mail, which is both free and Open Source. Other great apps like Thunderbird are Claws Mail, Evolution, Betterbird and SeaMonkey.

filter to find the best alternatives

Thunderbird alternatives are mainly Email Clients, but if you're looking for Calendar Apps or Contact Managers you can filter on that. Other popular filters include Open Source, Linux, iPhone, Android, Windows, Kindle Fire and Mac. 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 Thunderbird.
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Alternatives list

  1. eM Client icon

    eM Client

     234 likes

    Looking for a full-featured email client with a modern and easy-to-use interface? Look no further than eM Client. Rated 3 out of 5, eM Client is a popular alternative to Thunderbird, offering all the features you need to manage your email, calendar, tasks, contacts, notes, and chat all in one place.

    With support for IMAP, calendar integration, and multiple accounts, eM Client is the perfect choice for users who want a robust email client that can handle all their needs. Whether you're using Windows or Mac, eM Client is the most popular proprietary alternative to Thunderbird, offering a powerful and flexible solution for managing your email and staying organized. Give it a try today and see why so many users are making the switch to eM Client.

    64 eM Client alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Android
    eM Client: Inbox view
     
    |
    13
    eM Client vs Thunderbird Comments
    Top Positive Comment
    3psilon
    2

    A good Windows alternative if you use 1-2 mailboxes or don't mind paying.

    Top Negative Comment
    LinuxDoge
    3

    doesnt support Linux, isnt open source, not configurable enough

    Shoji VR
    Negative
    1

    its freemium and no linux support

    3 of 13 comments
    • eM Client is Freemium and ProprietaryThunderbird is Free and Open Source
  2. Sylpheed icon

    Sylpheed

     62 likes

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

    44 Sylpheed alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    Main screen
     
    |
    2
    Discontinued

    The latest beta version is from September 2022.

    Sylpheed vs Thunderbird Comments
    Guest
    Negative
    3

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

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

    Sypheed has been my email client for some 15 years, but its more recent lack of updating has been worrisome -- and got to a head now, because my account requires OAuth and Sypheed does not cover that. With much regret I must look for something else.

    Review by a new / low-activity user.
    • Sylpheed is Free and Open SourceThunderbird is also Free and Open Source
    • Sylpheed is LightweightThunderbird is not according to our users
  4. BlueMail icon

    BlueMail

     33 likes

    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.

    36 BlueMail alternatives

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Apple Watch
    • HUAWEI AppGallery
    BlueMail screenshot 1
     
    |
    3
    BlueMail vs Thunderbird Comments
    Guest
    Negative
    25

    bluemail pushes all your mail into their clud making it insecure

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

    It works on Android, but is not so powerfull.

    Review by a new / low-activity user.
    Guest
    Positive
    -2

    clear, easy to use lots of flexibility

    Review by a new / low-activity user.
    • BlueMail is Free Personal and ProprietaryThunderbird is Free and Open Source
    • BlueMail is LightweightThunderbird is not according to our users
  5. Ad
    Screenshot
    Superhuman Mail icon
    Superhuman Mail

    Productivity-centered email application streamlines inbox management, uses AI for drafting responses, automates snippets, summarizes conversations, enables timely sends, integrates calendar and CRM, and includes collaborative fea...

    https://superhuman.com
    Learn More
  6. Mailpile icon

    Mailpile

     118 likes

    Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • OpenPGP
    Mailpile screenshot 1
     
  8. Canary Mail icon

    Canary Mail

     29 likes

    A secure, cross-platform email client with a unified inbox, built-in PGP encryption, and optional AI. Use powerful AI when you want it or turn it off completely. Your email, your control.

    65 Canary Mail alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    iOS-1
     
  9. Mutt icon

    Mutt

     68 likes

    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

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Xfce
    Mutt screenshot 1
     
    |
    2
    Mutt vs Thunderbird Comments
    Guest
    Negative
    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.

    Review by a new / low-activity user.
    Guest
    Negative
    -2

    Mutt's a great email client for your terminal, not a GUI app like Thunderbird.

    Review by a new / low-activity user.
    • Mutt is Free and Open SourceThunderbird is also Free and Open Source
  10. Melia icon

    Melia

     6 likes

    Melia is a modern, privacy-first email client for Linux. It keeps your mail on your own machine instead of in the cloud, connecting straight to your IMAP and SMTP servers and storing everything in a local database.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Linux
    • Snapcraft
    Melia screenshot 1
     
  11. The Bat icon

    The Bat

     52 likes

    The Bat! is a secure email client software, built to protect your correspondence against third-parties.

    54 The Bat alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Windows
    The Bat screenshot 1
     
  12. TypeApp icon

    TypeApp

     31 likes

    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.

    54 TypeApp alternatives

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Mac
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Android Wear
    • Kindle Fire
    TypeApp screenshot 1
     
    |
    1
    TypeApp vs Thunderbird Comments
    Guest
    Positive
    2

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

    Review by a new / low-activity user.
    • TypeApp is Free Personal and ProprietaryThunderbird is Free and Open Source
  13. KMail icon

    KMail

     49 likes

    KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE. It supports calendars, contacts, notes, to-do lists, news, and email.

    54 KMail alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • BSD
    KMail screenshot 1
     
  14. myMail icon

    myMail

     16 likes

    myMail is the smart email app for managing all your accounts on iOS and Android.

    30 myMail alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • iPhone
    • iPad
    myMail screenshot 1
     
    |
    1
    myMail vs Thunderbird Comments
    Paul Karpo
    Positive
    3

    One of the best mobile email apps!

    • myMail is Free and ProprietaryThunderbird is Free and Open Source
  15. Aerion icon

    Aerion

     8 likes

    Modern open-source email client supporting unified inbox, IMAP/SMTP, Gmail and Outlook with OAuth2, conversation threading, rich text TipTap composing, CardDAV contact sync, tracking removal, dark mode, color themes, vim-style shortcuts, and a detachable window.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Flatpak
    Aerion screenshot 1
     
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