Thunderbird AlternativesOnly apps from the EU

The best alternative to Thunderbird is Betterbird, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Thunderbird and 17 are so hopefully you can find a suitable replacement. Other interesting alternatives to Thunderbird are eM Client, FairEmail, KMail and myMail.

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 Linux, Open Source, EU, iPhone, Windows + Open Source, Windows and Free. 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. Betterbird icon

    Betterbird

     73 likes

    Betterbird, a soft fork of Mozilla Thunderbird, improves user experience with advanced features, bug fixes, security patches, and multi-row descriptions similar to Outlook. Compatible with multiple platforms and can be used alongside Thunderbird, sharing the same profile.

    28 Betterbird alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Chocolatey
    Betterbird screenshot 1
     
    |
    6
    Comments about Betterbird as an Alternative to Thunderbird
    Top Positive Comment
    Sam Lander
    3

    Betterbird does everything that Thunderbird does (it's a soft fork), while improving bugs and features.

    Because it's a soft fork, it retains the security implementations of Thunderbird.

    Thunderbird actually implements many of the bug fixes created by Betterbird, but at a much slower pace.

    Shoji VR
    Positive
    1

    has more features than thunderbird

    drummer_nrg
    Positive
    1

    Betterbird is actively updated by a previous Thunderbird developer and is a fully compatible fork of Thunderbird which fixes some outstanding bugs. My add-ons like keepassxc-mail work fine!

    3 of 6 comments
    Betterbird icon
    Betterbird icon
    • Betterbird is Free and Open SourceThunderbird is also Free and Open Source
    • Betterbird is LightweightThunderbird is not according to our users
  2. eM Client icon

    eM Client

     233 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.

    61 eM Client alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Android
    eM Client: Inbox view
     
    |
    13
    Comments about eM Client as an Alternative to Thunderbird
    Top Positive Comment
    3psilon
    2

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

    Top Negative Comment
    LinuxDoge
    2

    doesnt support Linux, isnt open source, not configurable enough

    Shoji VR
    Negative
    0

    its freemium and no linux support

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

    FairEmail

     88 likes

    Open-source, privacy-focused email client offering features such as encryption via OpenPGP and S/MIME, unlimited accounts, a unified inbox, customizable settings, and reformatted emails to prevent phishing. Supports two-way synchronization and provides Pro features for additional customization.

    43 FairEmail alternatives

    Cost / License

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Compose message view.
     
    |
    2
    Comments about FairEmail as an Alternative to Thunderbird
    ByteRanger
    Negative
    -2

    While I do use FairEmail on my mobile devices and like it, it is not a valid alternative to Thunderbird which is for desktop platforms.

    Guest
    Negative
    -8

    wrong platform. FairEmail is not an alternative for Thunderbird users because it only runs on android. Thunderbird is for desktop operating systems only.

    Review by a new / low-activity user.
    FairEmail icon
    FairEmail icon
    • FairEmail is Freemium and Open SourceThunderbird is Free and Open Source
    • FairEmail is LightweightThunderbird is not according to our users
  5. 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.

    52 KMail alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • BSD
    KMail screenshot 1
     
  6. myMail icon

    myMail

     16 likes

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

    29 myMail alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • iPhone
    • iPad
    myMail screenshot 1
     
    |
    1
    Comments about myMail as an Alternative to Thunderbird
    Paul Karpo
    Positive
    3

    One of the best mobile email apps!

    myMail icon
    myMail icon
    • myMail is Free and ProprietaryThunderbird is Free and Open Source
  7. Trojitá icon

    Trojitá

     17 likes

    Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. Trojitá values vendor-neutrality that IMAP provides and is committed to be as interoperable as possible.

    36 Trojitá alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Linux
    Home
     
  9. Airmail icon

    Airmail

     73 likes

    Engineered for iOS, macOS, and watchOS, this fast mail client supports multiple account types, custom actions, Smart Inbox filtering, unified inbox, privacy mode, email scheduling, snooze, third-party app integration, flexible personalization, and advanced workflow tools.

    66 Airmail alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
    • Apple Watch
    Airmail screenshot 1
     
  10. Nextcloud Mail icon

    Nextcloud Mail

     11 likes

    💌 Mail app for Nextcloud.

    Cost / License

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Nextcloud
     
  11. WunderMail icon

    WunderMail

     2 likes

    The missing native desktop client for Gmail on Windows 10.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Gmail
    WunderMail screenshot 1
     
  12. Mynigma icon

    Mynigma

     2 likes

    Mynigma is a new kind of email client with built-in encryption.

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • iPhone
    • iPad
    Mynigma screenshot 1
     
  13. Koma-Mail icon

    Koma-Mail

     4 likes

    Koma-Mail is an email client which is comfortable and has very handy functions. It does not need an installation, so that you can run Koma-Mail from your flash drive but, of course, also on your desktop.

    Cost / License

    • Free
    • Proprietary

    Application types

    Alerts

    • Discontinued

    Platforms

    • Windows
    Koma-Mail screenshot 1
     
  14. mu icon

    mu

     5 likes

    mu is a tool for dealing with e-mail messages stored in the Maildir-format, on Unix-like systems. mu's main purpose is to help you to find the messages you need, quickly; in addition, it allows you to view messages, extract attachments, create new maildirs, …

    Cost / License

    Application type

    Platforms

    • Mac
    • Linux
    • BSD
    mu screenshot 1
     
12 of 17 Thunderbird alternatives