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 Linux, Open Source, iPhone, Free, Windows + Open Source, Android and Kindle Fire. 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. 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.

    126 Microsoft Outlook alternatives

    Cost / License

    • Pay once or Subscription
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    • Android Wear
    Outlook 365 on Windows
     
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    5
    84
    Comments about Microsoft Outlook as an Alternative to Thunderbird
    Top Positive Comment
    Eyji
    4

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

    Top Negative Comment
    LinuxDoge
    3

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

    Guest
    Negative
    3

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

    Review by a new / low-activity user.
    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 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).

    42 Sylpheed alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    Main screen
     
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    1
    17
    Comments about Sylpheed as an Alternative to Thunderbird
    Guest
    Negative
    3

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

    Review by a new / low-activity user.
    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. BlueMail icon

    BlueMail

     33 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.

    32 BlueMail alternatives

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Apple Watch
    BlueMail screenshot 1
    BlueMail screenshot 2
    BlueMail screenshot 3
     
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    3
    27
    Comments about BlueMail as an Alternative to Thunderbird
    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.
    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
  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. 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...

    51 Mutt alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Xfce
    Mutt screenshot 1
     
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    2
    24
    Comments about Mutt as an Alternative to Thunderbird
    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
    0

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

    Review by a new / low-activity user.
    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
  7. Mailpile icon

    Mailpile

     117 likes
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    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
     

    • Mailpile is the most popular Self-Hosted alternative to Thunderbird.

    • Mailpile is Free and Open SourceThunderbird is also Free and Open Source
  8. Canary Mail icon

    Canary Mail

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

    62 Canary Mail alternatives

    Cost / License

    • Freemium (Pay once or Subscription)
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    iOS-1
     
  10. KMail icon

    KMail

     49 likes
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    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
     
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    10
  11. The Bat icon

    The Bat

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

    53 The Bat alternatives

    Cost / License

    • Pay once
    • Proprietary

    Application type

    Platforms

    • Windows
    The Bat screenshot 1
     
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    13
  12. 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.

    54 TypeApp alternatives

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Android Wear
    • Kindle Fire
    TypeApp screenshot 1
     
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    1
    14
    Comments about TypeApp as an Alternative to Thunderbird
    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.
    Thunderbird Icon
    TypeApp icon

    • Most users think TypeApp is a great Thunderbird alternative.

    • TypeApp is Free Personal and ProprietaryThunderbird is Free and Open Source
  13. myMail icon

    myMail

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

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • iPhone
    • iPad
    myMail screenshot 1
    myMail screenshot 2
    myMail screenshot 3
     
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    1
    11
    Comments about myMail as an Alternative to Thunderbird
    Paul Karpo
    Positive
    3

    One of the best mobile email apps!

    Thunderbird Icon
    myMail icon

    • Almost everyone thinks myMail is a great Thunderbird alternative.

    • myMail is Free and ProprietaryThunderbird is Free and Open Source
  14. ElectronMail icon

    ElectronMail

     24 likes
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    ElectronMail is an Electron-based unofficial desktop client for ProtonMail and Tutanota end-to-end encrypted email providers. The app aims to provide enhanced desktop user experience enabling features that are not supported by the official in-browser web clients.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • ProtonMail
    • Electron / Atom Shell
    • Tutanota
    ElectronMail screenshot 1
     
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    2
    Comments about ElectronMail as an Alternative to Thunderbird
    Guest
    Negative
    17

    Thunderbird connects with servers that use standard protocols and with servers for which a plugin was developed. ElectronMail works with ProtonMail ONLY and was specifically designed for this provider. Tutanota support is deprecated since July 2019.

    Review by a new / low-activity user.
    Guest
    Negative
    3

    It's only used for one provider

    Review by a new / low-activity user.
    Thunderbird Icon
    ElectronMail icon
    • ElectronMail is Free and Open SourceThunderbird is also Free and Open Source
  15. Wino Mail icon

    Wino Mail

     8 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.

    21 Wino Mail alternatives

    Cost / License

    • Freemium (Pay once)
    • Open Source

    Application type

    Platforms

    • Windows
    Wino Mail screenshot 1
     
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