Thunderbird Alternatives for Linux

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

Thunderbird alternatives are mainly Email Clients but may also be Calendar Apps or Web Browsers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Thunderbird.

Thunderbird alternatives page was last updated

Thunderbird

2278

Free • Open Source
Email Client

Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is...

More about Thunderbird

Claws Mail
Is this is a good alternative?
Yes
No
Free • Open Source
Email Client
Calendar App
Windows
Linux
BSD
84 Claws Mail alternatives
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.
- - Claws Mail is the most popular Windows & Linux alternative to Thunderbird.
Suggest and vote on features
Claws Mail Features
1. LightweightClaws Mail consumes less device resources compared to similar apps.
2. Extensible by Plugins/ExtensionsClaws Mail can be extended with add-ons, plugins and extensions.
3. Multiple Account supportClaws Mail support multiple accounts without the need to logout and login
4. No registration requiredYou can use most of the features in Claws Mail without registration.
5. Spam FilterClaws Mail can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
6. Privacy focusedClaws Mail is considered a privacy friendly alternative.
7. Works OfflineClaws Mail can be used without the need to connect to the internet.
8. Calendar IntegrationClaws Mail lets you sync your tasks and events with your calendar application.
9. PortableClaws Mail can be used from a USB stick or similar with no prior installation.
IMAP Support
Customizable
Ad-free
GPG Encryption
Import/Export OPML Feeds
End-to-End Encryption
Built-in RSS reader
Integrated Email Client
Multiple languages
Content Filtering
Comments about Claws Mail as a Alternative to Thunderbird
Most users think Claws Mail is a great Thunderbird alternative.
all • positive • negative relevance • date
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 comment•
9

3psilon
It's a good, lightweight alternative, but the UI is clunky and it misses HTML message composing. You have been warned!
Top positive comment•
14

Guest
No HTML compose is the only reason I don't switch to it. We're not in 1980 anymore.
Top negative comment•
15

Guest
very good alternative under linux. I can not say the same under windows since fancy plugin is very buggy.
Positive comment•
-1

Guest
Much faster than thunderbird which cloaks on weak machines.
Positive comment•
7

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5 of 7 comments
Evolution
Is this is a good alternative?
Yes
No
Free • Open Source
Email Client
Calendar App
Linux
BSD
Flathub
S/MIME
GNOME
OpenPGP
83 Evolution alternatives
Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality. Evolution supports a wide range of industry standard data formats and network protocols for information exchange, with an emphasis on...
Suggest and vote on features
Evolution Features
1. Calendar IntegrationEvolution lets you sync your tasks and events with your calendar application.
2. Calendar ViewEvolution has a built-in calendar view to have a clear overview of your content over time.
3. Ad-freeEvolution doesn't contain any form of external advertising.
4. Multiple Account supportEvolution support multiple accounts without the need to logout and login
5. GPG EncryptionEvolution supports GPG (aka GnuPG) for encryption of things like emails, messages, files, etc.
6. Spam FilterEvolution can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
7. RemindersEvolution allows you to set reminders for tasks, events or actions, based on parameters of time, place or condition.
8. Sync with Google CalendarEvolution can be synchronized with Google Calendar
Contacts
CalDAV Support
Encrypted Email
CardDAV Support
Personal Information Manager (PIM)
IMAP Support
Exchange
POP3 Support
Multiple languages
Integrated Spam Protection
Comments about Evolution as a Alternative to Thunderbird
Most users think Evolution is a great Thunderbird alternative.
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.
Positive comment•
1

Syntevo GmbH
Unfortunately, only available on Linux, not on Windows, not on MacOS. Otherwise promising.
Comment•
0

Guest
well, I use cinnamon desktop, Thunderbird does not display 24 hour format but AM/PM for starters. Also, I use the built-in acount manager and Thunderbird does not "talk" with that as well.. Evolution does sync my CALDAV and CARDDAV from this. Thunderbird needs plugins for this and these plugins also make Thunderbird unstable (lightning). Since I like to keep things "clean", Evolution is my software of choice ATM...
Positive comment•
0

Guest
Has a nice Gui, works fast and has many options. Still some functions are not intuitive. Good alternative to Thunderbird
Positive comment•
0
SeaMonkey
Is this is a good alternative?
Yes
No
Free • Open Source
Web Browser
Mac
Windows
Linux
BSD
PortableApps.com
250 SeaMonkey alternatives
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.
- - SeaMonkey is the most popular Mac alternative to Thunderbird.
Suggest and vote on features
SeaMonkey Features
1. WYSIWYG SupportSeaMonkey integrates a WYSIWYG editor to edit the look and content of a document, page, or file.
2. Privacy focusedSeaMonkey is considered a privacy friendly alternative.
3. LightweightSeaMonkey consumes less device resources compared to similar apps.
4. Extensible by Plugins/ExtensionsSeaMonkey can be extended with add-ons, plugins and extensions.
5. PortableSeaMonkey can be used from a USB stick or similar with no prior installation.
6. Ad-freeSeaMonkey doesn't contain any form of external advertising.
Integrated Email Client
Built-in RSS reader
Add-ons
Built-in Download Manager
Customizable
Support for Firefox extensions
Modular System
Comments about SeaMonkey as a Alternative to Thunderbird
Some users think SeaMonkey is a great Thunderbird alternative, some don't.
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 comment•
21

Guest
Unfortunately doesn't support synchronization with CardDAV address books.
Negative comment•
0

apostolfaliagas
It has all of Thunderbird's features and many more.
Positive comment•
15

Guest
More of a web browser than an email client
Negative comment•
-9
Geary
Is this is a good alternative?
Yes
No
Free • Open Source
Email Client
Linux
BSD
Flathub
GNOME
Flatpak
52 Geary alternatives
Geary is an email application built around conversations, for the GNOME 3 desktop.
Suggest and vote on features
Geary Features
1. Multiple Account supportGeary support multiple accounts without the need to logout and login
2. Dark ModeGeary supports dark mode for comfortable usage in low light conditions.
3. LightweightGeary consumes less device resources compared to similar apps.
4. Spam FilterGeary can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
5. Ad-freeGeary doesn't contain any form of external advertising.
6. Privacy focusedGeary is considered a privacy friendly alternative.
7. Email OrganizerGeary allows you to take control of your inbox by filtering and control tools.
Conversational email approach
SMTP Support
IMAP Support
Labels for content
Gmail integration
Multiple languages
Comments about Geary as a Alternative to Thunderbird
Most users think Geary is a great Thunderbird alternative.
Guest
Only IMAP. No support for local folders.
Negative comment•
1

Guest
Doesn't have an address book
Negative comment•
1

Guest
Easy to set up. Thunderbird doesn't connect anymore with hotmail and yahoo. No address book.
Positive comment•
-21
Mailspring
Is this is a good alternative?
Yes
No
Freemium • Open Source
Email Client
Mac
Windows
Linux
Arch Linux
Fedora
Ubuntu
46 Mailspring alternatives
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.
Suggest and vote on features
Mailspring Features
1. Unified inboxView e-mails (or similar) from all accounts in one unified view with Mailspring.
2. Multiple Account supportMailspring support multiple accounts without the need to logout and login
3. Dark ModeMailspring supports dark mode for comfortable usage in low light conditions.
4. Support for ThemesYou can use themes and templates to change the look and feel of Mailspring.
5. Ad-freeMailspring doesn't contain any form of external advertising.
6. Email OrganizerMailspring allows you to take control of your inbox by filtering and control tools.
7. Extensible by Plugins/ExtensionsMailspring can be extended with add-ons, plugins and extensions.
Customizable
Email tracking
User friendly
Snooze Mail
Built-in translation
Built-in themes
Auto Update
Notifications
Sidebar
Theme Customization
Comments about Mailspring as a Alternative to Thunderbird
Most users think Mailspring is a great Thunderbird alternative.
all • positive • negative relevance • date
Riska Asmara
Simple, more streamlined UI and easily customizable.
Top positive comment•
4

3psilon
Great alternative, especially for casual users. Simple, streamlined UI, feels fresh.
Top positive comment•
1

Guest
Need to create an account on a third-party company to access your email.
Top negative comment•
56

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 comment•
0

Peter Bromfield
nice interface (if you are talking about the feature, kcontact/kmail is the best, but this has a nice interface)
Positive comment•
-3

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5 of 7 comments
Betterbird
Is this is a good alternative?
Yes
No
Free • Open Source
Email Client
Windows
Linux
Flathub
30 Betterbird alternatives
Betterbird is a fine-tuned version of Mozilla Thunderbird, Thunderbird on steroids, if you will.
Suggest and vote on features
Betterbird Features
1. Privacy focusedBetterbird is considered a privacy friendly alternative.
2. Multiple Account supportBetterbird support multiple accounts without the need to logout and login
3. Unified inboxView e-mails (or similar) from all accounts in one unified view with Betterbird.
4. Extensible by Plugins/ExtensionsBetterbird can be extended with add-ons, plugins and extensions.
5. Works OfflineBetterbird can be used without the need to connect to the internet.
6. Calendar IntegrationBetterbird lets you sync your tasks and events with your calendar application.
7. PGP EncryptionBetterbird supports PGP, an encryption system used for sending encrypted emails and files.
8. No TrackingBetterbird will not track you or use your personal data.
9. Ad-freeBetterbird doesn't contain any form of external advertising.
Personal Information Manager (PIM)
Built-in RSS reader
Lightweight
FOSS
Support for Themes
Add a screenshot

Comments about Betterbird as a Alternative to Thunderbird
pros, cons and recent comments
HOT EARTH
Its Thunderbird, just Better. No Import needed, as it uses the same profile Folder!
Positive comment•
3

jdakfkj333
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 comment•
0

Guest
No Thunderbird importation.
Negative comment•
-6
Mailpile
Is this is a good alternative?
Yes
No
Free • Open Source
Email Client
WebMail Provider
Linux
Online
Self-Hosted
OpenPGP
59 Mailpile alternatives
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.
- - Mailpile is the most popular Self-Hosted alternative to Thunderbird.
Suggest and vote on features
Mailpile Features
1. OpenPGPMailpile supports OpenPGP, a standard of PGP encryption that is open-source for public use.
Web-Based
Encrypted Email
IMAP Support
POP3 Support