The Best Thunderbird AlternativesTop Email Clients & Calendar Apps like Thunderbird
Thunderbird is described as 'Free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox' 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, SeaMonkey and Geary.
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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.- Email Client
- Free • Open Source
345 likes44 K-9 Mail alternativesK-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.
K-9 Mail VS Thunderbird
Is K-9 Mail a good alternative to Thunderbird?
100 likes79 Claws Mail alternativesClaws 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 VS Thunderbird
Is Claws Mail a good alternative to Thunderbird?Comments about Claws Mail as an Alternative to Thunderbird
Jonathan DUMONTDespite the style, Claws is super fast and allow you to programs it with Perl and Python which is great for marketing automation.
9No HTML compose is the only reason I don't switch to it. We're not in 1980 anymore.
18SViNI 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.
1
201 likes77 Evolution alternativesEvolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.
License model
- Free • Open Source
Application types
Platforms
- Linux
- BSD
- Flathub
- S/MIME
- GNOME
- OpenPGP
Top Evolution Features
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.
1Matthew BulfinchAs 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.
0Syntevo GmbHUnfortunately, only available on Linux, not on Windows, not on MacOS. Otherwise promising.
1
233 likes247 SeaMonkey alternativesWeb-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.
License model
- Free • Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- BSD
- PortableApps.com
SeaMonkey VS Thunderbird
Is SeaMonkey a good alternative to Thunderbird?Comments about SeaMonkey as an Alternative to Thunderbird
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).
21apostolfaliagasIt has all of Thunderbird's features and many more.
15Unfortunately doesn't support synchronization with CardDAV address books.
0
105 likes49 Geary alternativesGeary is an email application built around conversations, for the GNOME 3 desktop.
Geary VS Thunderbird
Is Geary a good alternative to Thunderbird?Comments about Geary as an Alternative to Thunderbird
Kelson VGeary 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.
0Doesn't have an address book
1Only IMAP. No support for local folders.
1
39 likes28 Betterbird alternativesBetterbird is a drop-in replacement for Mozilla Thunderbird. Betterbird has more features and more fixed bugs than Thunderbird.
License model
- Free • Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Flathub
- Chocolatey
Betterbird VS Thunderbird
Is Betterbird a good alternative to Thunderbird?Comments about Betterbird as an Alternative to Thunderbird
Sam LanderBetterbird 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.
2HOT EARTHIts Thunderbird, just Better. No Import needed, as it uses the same profile Folder!
4It has many fixes for long existing bugs
1
105 likes42 Mailspring alternativesBoost 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.
License model
- Freemium • Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Arch Linux
- Fedora
- Ubuntu
Mailspring VS Thunderbird
Is Mailspring a good alternative to Thunderbird?Comments about Mailspring as an Alternative to Thunderbird
3psilonGreat alternative, especially for casual users. Simple, streamlined UI, feels fresh.
1Need to create an account on a third-party company to access your email.
59Matt SchaeferUnable 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.
0
Streamline your email experience by managing multiple accounts, integrating apps like Slack and Google Calendar, and using AI-driven features like drafting and spam prevention. Customize your workspace with themes, notifications, and tools for improved productivity and a modern interface.
Comments about K-9 Mail as an Alternative to Thunderbird
Keeps the style of working with email as it should be, like we are used to from proper desktop Mail clients. It's unlike modern fancy clients with couple of buttons without even providing an option to view headers.
K-9 Mail is not for desktop operating systems, only Android. So you can't replace Thunderbird unless you are also replacing your desktop with a mobile device.
not understanding the negative comments or why most of the positive comments are being heavily downvoted. i came here looking for something that works like thunderbird but for my android phone. i found it, but i guess i'm using the website wrong.