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 Claws Mail, which is both free and Open Source. Other great apps like Thunderbird are Evolution, Betterbird, SeaMonkey and K-9 Mail.

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, iPhone, Kindle Fire, Mac, Windows and Android. 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
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Alternatives list

  1. Icedove-UXP icon

    Icedove-UXP

     Like

    Historically, Icedove was a re-branding of Thunderbird by the Debian project, with minimal modifications, in order to resolve branding disputes. Debian since discontinued Iceweasel in February of 2017 after reaching an agreement with Mozilla over the use of it's trademark.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    Good alternative?
     
  2. Orbit Communicator icon

    Orbit Communicator

     1 like

    Orbit Communicator is a client server application that's designed to be deployed locally on your desktop machine. It currently provides an integrated email / calendaring experience based on external IMAP mail sources.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • Linux
    • Self-Hosted
    • GB flagUnited Kingdom
    Email with attachment browser
    Good alternative?
     
  4. Macro icon

    Macro

     3 likes

    Macro is the open source company OS - channels, email, docs, tasks, crm, and AI in one workspace - that's self-hostable and AGPLv3 licensed.

    Cost / License

    Application type

    Platforms

    • Online
    • iPhone
    • US flagUnited States
    Main landing page on Macro
    Good alternative?
     
  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. KuNoMAIL icon

    KuNoMAIL

     Like

    The email fun continues... Import your IncrediMail Stationery, E-Cards, E-Mails and Contacts.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Windows
    KuNoMAIL screenshot 1
    Good alternative?
     
  7. OE Classic icon

    OE Classic

     1 like

    OE Classic is an email and Usenet reader designed to be a perfect replacement for Outlook Express, Windows Mail, Windows Live Mail and even Mozilla Thunderbird.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Windows
    OE Classic screenshot 1
    Good alternative?
     
  9. 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
    • DE flagGermany
    • European Union flagEU
    WunderMail screenshot 1
    Good alternative?
     
  10. 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
    • DE flagGermany
    • European Union flagEU
    Mynigma screenshot 1
    Mynigma screenshot 2
    Mynigma screenshot 3
    Good alternative?
     
  11. MailDroid icon

    MailDroid

     3 likes

    Need a great working email client on Android? MailDroid is the one you should download! Has the power of Outlook and Thunderbird for your Android device.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Android
    • S/MIME
    • OpenPGP
    • US flagUnited States
    MailDroid screenshot 1
    MailDroid screenshot 2
    MailDroid screenshot 3
    Good alternative?
     
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  12. Pegasus Mail icon

    Pegasus Mail

     14 likes

    Pegasus Mail is a free, standards-based electronic mail client suitable for use by single or multiple users on single computers or on local area networks.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Windows
    • NZ flagNew Zealand
    Screenshot taken January, 2018. Fresh install.
    Good alternative?
     
  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.

    67 Koma-Mail alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    • DE flagGermany
    • European Union flagEU
    Koma-Mail screenshot 1
    Good alternative?
     
  14. TouchMail icon

    TouchMail

     Like

    Navigate messages with zooms and swipes across your messages.

    Turn your email into colorful, visual tiles you can explore with your fingers or mouse. Rich 3D visualizations and familiar gestures make TouchMail the fastest and easiest way to keep your inbox clean and keep import.

    66 TouchMail alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Windows
    • US flagUnited States
    Visual mail
    Good alternative?
     
  15. Clyton icon

    Clyton

     1 like

    Clyton is an email client with advanced security and spam filtering features. Although priced for the general public, Clyton possesses the reliability and security required by businesses.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Windows
    • US flagUnited States
    Clyton screenshot 1
    Good alternative?
     
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