Thunderbird AlternativesOnly apps categorised as Email Clients for Linux

There are many alternatives to Thunderbird for Linux if you are looking for a replacement. The best Linux Email Client 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 Email Clients available for Linux so hopefully you can find a suitable replacement. Other interesting Linux Email Client alternatives to Thunderbird are Evolution, SeaMonkey, Geary and Betterbird.

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Thunderbird alternatives are mainly Email Clients but may also be Calendar Apps or RSS Readers.  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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Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.

More about Thunderbird
Thunderbird alternatives page was last updated Nov 4, 2024
  1. Claws Mail icon
     100 likes

    Claws Mail is an email client (and news reader), based on GTK+, featuring

    Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features Extensibility Robustness and stability.

    78 Claws Mail alternatives
    The main window

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Windows
    • Linux
    • BSD

    Top Claws Mail Features

    1.  Lightweight
    2.  Extensible by Plugins/Extensions
    3.  Multiple Account support
    4.  Spam Filter
    5.  No registration required
    6.  Ad-free
    7.  Privacy focused
    8.  Works Offline
    9.  Portable
    10.  Calendar Integration
    11.  GPG Encryption
    12.  Import/Export OPML Feeds
    Claws Mail iconThunderbird Icon

    Claws Mail VS Thunderbird

    Is Claws Mail a good alternative to Thunderbird?
     
    Comments about Claws Mail as an Alternative to Thunderbird
     
       
    Jonathan DUMONT

    Despite the style, Claws is super fast and allow you to programs it with Perl and Python which is great for marketing automation.

    Top positive commentAug 1, 2019
    9
    Guest

    No HTML compose is the only reason I don't switch to it. We're not in 1980 anymore.

    Top negative commentSep 28, 2018
    18
    SViN

    I think most people are using gmail accounts or outlook accounts to access their emails. Claws supports Oauth2 to access said accounts but the implementation, is a complete PAIN.

    I can only realistically recommend something like this if your email provider is not forcing Oauth2.

    I would like for the devs to get to work into making the experience of setting up an account with oauth as painless as thunderbird.

    CommentSep 20, 2023
    1
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    3 of 8 comments
    Thunderbird Icon
    Claws Mail icon
    • Most users think Claws Mail is a great Thunderbird alternative.

    • Claws Mail is the most popular Windows & Linux alternative to Thunderbird.

    • Claws Mail is Free and Open SourceThunderbird is also Free and Open Source
    • Claws Mail is Lightweight and Privacy focusedThunderbird is not according to our users
  2. Evolution icon
     199 likes

    Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.

    77 Evolution alternatives
    Mail

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Linux
    • BSD
    • Flathub
    • S/MIME
    • GNOME
    • OpenPGP

    Top Evolution Features

    1.  Calendar Integration
    2.  Contacts
    3.  CalDAV Support
    4.  Calendar View
    5.  Ad-free
    6.  Spam Filter
    7.  Multiple Account support
    8.  Sync with Google Calendar
    9.  Extensible by Plugins/Extensions
    10.  Dark Mode
    11.  Works Offline
    12.  GPG Encryption
    Evolution iconThunderbird Icon

    Evolution VS Thunderbird

    Is Evolution a good alternative to Thunderbird?
     
    Comments about Evolution as an Alternative to Thunderbird
     
       
    Michel Th.

    I use both Thunderbird and Evolution, sometimes Claws-Mail. Evolution is the only one that can show the real "received" date in scams I have been receiving for months. In a today's scam Evolution shows "sent date" (falsified) 14-12-2019 and "received date" 30-01-2023 (evidently true). Thunderbird and Claws-Mail show 14-12-2019 in both columns.

    Top positive commentJan 30, 2023
    1
    Matthew Bulfinch

    As someone who is forced to use M365 at work (but ditching it at home, I let my subscription lapse) this is the closest visually to Outlook. That's important to me. The workflow is essentially identical.

    Positive commentOct 16, 2024
    0
    Syntevo GmbH

    Unfortunately, only available on Linux, not on Windows, not on MacOS. Otherwise promising.

    CommentNov 18, 2022
    1
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    3 of 5 comments
    Thunderbird Icon
    Evolution icon
    • Most users think Evolution is a great Thunderbird alternative.

    • Evolution is Free and Open SourceThunderbird is also Free and Open Source
  3. SeaMonkey icon
     233 likes

    Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the open source Mozilla Gecko engine, the same code which underlies Thunderbird and is the base for the Firefox browser.

    246 SeaMonkey alternatives
    SeaMonkey screenshot 1

    License model

    • FreeOpen Source

    Application types

    Platforms

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

    Top SeaMonkey Features

    1.  Integrated Email Client
    2.  Built-in RSS reader
    3.  Add-ons
    4.  Customizable
    5.  Built-in Download Manager
    6.  Lightweight
    7.  WYSIWYG Support
    8.  Extensible by Plugins/Extensions
    9.  Portable
    10.  Privacy focused
    11.  Ad-free
    12.  Support for Firefox extensions
    SeaMonkey iconThunderbird Icon

    SeaMonkey VS Thunderbird

    Is SeaMonkey a good alternative to Thunderbird?
     
    Comments about SeaMonkey as an Alternative to Thunderbird
     
       
    Guest

    SeaMonkey is both a WEB BROWSER and EMAIL CLIENT. It's the successor of Mozilla Application Suite or Netscape Communicator, resp. Further it includes also a news client program, an HTML editor (SeaMonkey Composer) and an IRC client (ChatZilla).

    Positive commentNov 16, 2017
    21
    apostolfaliagas

    It has all of Thunderbird's features and many more.

    Positive commentFeb 19, 2018
    15
    Guest

    Unfortunately doesn't support synchronization with CardDAV address books.

    Negative commentMar 28, 2022
    0
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    3 of 4 comments
    Thunderbird Icon
    SeaMonkey icon
    • Some users think SeaMonkey is a great Thunderbird alternative, some don't.

    • SeaMonkey is the most popular Mac alternative to Thunderbird.

    • SeaMonkey is Free and Open SourceThunderbird is also Free and Open Source
    • SeaMonkey is Lightweight and Privacy focusedThunderbird is not according to our users
  4. Geary icon
     105 likes

    Geary is an email application built around conversations, for the GNOME 3 desktop.

    49 Geary alternatives
    Main window

    License model

    • FreeOpen Source

    Application type

    Platforms

    • Linux
    • BSD
    • Flathub
    • GNOME
    • Flatpak

    Top Geary Features

    1.  Multiple Account support
    2.  Conversational email approach
    3.  Dark Mode
    4.  IMAP Support
    5.  Lightweight
    6.  Ad-free
    7.  Privacy focused
    8.  Email Organizer
    9.  Spam Filter
    10.  No Tracking
    11.  Gmail integration
    12.  Labels for content
    Geary iconThunderbird Icon

    Geary VS Thunderbird

    Is Geary a good alternative to Thunderbird?
     
    Comments about Geary as an Alternative to Thunderbird
     
       
    Kelson V

    Geary is a lot lighter than Thunderbird, so it's a good choice on lower-end hardware. IMAP features are basic, but 90% of what most people will need. It relies on GNOME for contacts, but the mail app itself can run on any Linux desktop.

    Positive commentNov 28, 2023
    0
    Guest

    Doesn't have an address book

    Negative commentApr 23, 2017
    1
    Guest

    Only IMAP. No support for local folders.

    Negative commentSep 28, 2018
    1
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    3 of 4 comments
    Thunderbird Icon
    Geary icon
    • Most users think Geary is a great Thunderbird alternative.

    • Geary is Free and Open SourceThunderbird is also Free and Open Source
    • Geary is Lightweight and Privacy focusedThunderbird is not according to our users
  5. Betterbird icon
     40 likes

    Betterbird is a drop-in replacement for Mozilla Thunderbird. Betterbird has more features and more fixed bugs than Thunderbird.

    28 Betterbird alternatives
    Calendar view with custom thundirbird dark theme

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Chocolatey

    Top Betterbird Features

    1.  Multiple Account support
    2.  Privacy focused
    3.  Lightweight
    4.  Extensible by Plugins/Extensions
    5.  Unified inbox
    6.  Works Offline
    7.  Ad-free
    8.  Support for Themes
    9.  Portable
    10.  PGP Encryption
    11.  No Tracking
    12.  Spam Filter
    Betterbird iconThunderbird Icon

    Betterbird VS Thunderbird

    Is Betterbird a good alternative to Thunderbird?
     
    Comments about Betterbird as an Alternative to Thunderbird
     
       
    Sam Lander

    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.

    Positive commentMay 31, 2023
    2
    HOT EARTH

    Its Thunderbird, just Better. No Import needed, as it uses the same profile Folder!

    Positive commentSep 5, 2022
    4
    Guest

    It has many fixes for long existing bugs

    Positive commentJun 20, 2024
    1
    Show more comments
    3 of 4 comments
    Thunderbird Icon
    Betterbird icon
    • Almost everyone thinks Betterbird is a great Thunderbird alternative.

    • Betterbird is Free and Open SourceThunderbird is also Free and Open Source
    • Betterbird is Privacy focused and LightweightThunderbird is not according to our users
  6. Mailspring icon
     105 likes

    Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.

    42 Mailspring alternatives
    Clean design with integrated search and swipe gestures

    License model

    • FreemiumOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Arch Linux
    • Fedora
    • Ubuntu

    Top Mailspring Features

    1.  Unified inbox
    2.  Multiple Account support
    3.  Dark Mode
    4.  Customizable
    5.  Email tracking
    6.  User friendly
    7.  Snooze Mail
    8.  Ad-free
    9.  Theme Customization
    10.  Support for Themes
    11.  Email Organizer
    12.  Extensible by Plugins/Extensions
    Mailspring iconThunderbird Icon

    Mailspring VS Thunderbird

    Is Mailspring a good alternative to Thunderbird?
     
    Comments about Mailspring as an Alternative to Thunderbird
     
       
    3psilon

    Great alternative, especially for casual users. Simple, streamlined UI, feels fresh.

    Top positive commentMay 2, 2018
    1
    Guest

    Need to create an account on a third-party company to access your email.

    Top negative commentSep 28, 2018
    59
    Matt Schaefer

    Unable to even find an address book or ability to import a csv file from previous mail client. You lose me when things are made so "modern-clean" that I have to consult a manual or Google things.

    Negative commentJul 15, 2022
    0
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    3 of 7 comments
    Thunderbird Icon
    Mailspring icon
    • Most users think Mailspring is a great Thunderbird alternative.

    • Mailspring is Freemium and Open SourceThunderbird is Free and Open Source
  7. Mutt icon
     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...

    54 Mutt alternatives
    Mutt screenshot 1

    License model

    • FreeOpen Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Xfce

    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 iconThunderbird Icon

    Mutt VS Thunderbird

    Is Mutt a good alternative to Thunderbird?
     
    Comments about Mutt as an Alternative to Thunderbird
     
    Guest

    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.

    Negative commentApr 21, 2020
    17
    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 of 31 Thunderbird alternatives