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, Betterbird, SeaMonkey and Geary.
Email and news client on GTK+ foundation featuring quick performance, extensible plugins, secure protocols, advanced filtering, strong folder and contact management, lightweight design, powerful search, customizable interface, multi-language support, and encryption.
Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.
United States
Betterbird, a soft fork of Mozilla Thunderbird, improves user experience with advanced features, bug fixes, security patches, and multi-row descriptions similar to Outlook. Compatible with multiple platforms and can be used alongside Thunderbird, sharing the same profile.
Germany
EU
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.
GermanyEU
Geary is an email application built around conversations, for the GNOME 3 desktop.
United States
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.
United States
Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).
Japan
Free, open-source client for Windows, macOS, and Linux, offering local email storage and search online or offline, privacy-focused with no telemetry or third-party servers, IMAP and SMTP support, intuitive interface, and multiple account support.
GermanyEU
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.
United States
Melia is a modern, privacy-first email client for Linux. It keeps your mail on your own machine instead of in the cloud, connecting straight to your IMAP and SMTP servers and storing everything in a local database.
United States
Modern open-source email client supporting unified inbox, IMAP/SMTP, Gmail and Outlook with OAuth2, conversation threading, rich text TipTap composing, CardDAV contact sync, tracking removal, dark mode, color themes, vim-style shortcuts, and a detachable window.
Hong Kong SAR China
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.
