Mozilla Thunderbird 135: Powerful cross-platform mail client

Mozilla Thunderbird is a free, open source, cross-platform email, calendar, news, chat and contact management client designed to efficiently handle multiple email accounts and news sources. On February 5, 2025, Mozilla released the Thunderbird 135 version, introducing a number of new features, performance improvements and security fixes.

Thunderbird 135 main features:

• XZ Packaging for Linux Binaries: Smaller files, faster unpacking, and better integration with modern distributions.
• Cookie storage support: When creating a space, you can specify cookieStoreId .
• OpenPGP Key Improvement: Unsupported subkeys/signatures are ignored when importing compatible OpenPGP keys.
• CardDAV's OAuth2: CardDAV address book and calendar now use the same OAuth2 code as email.
• UI and UX Enhancements: Updated the preferences for missed reminders, improved attachment handling, and fixed various UI issues.
• Security fix: 12 security vulnerabilities were resolved and user protection was enhanced.
• Bug fixes and improvements: Fixed issues related to folder compression, POP3 support, account settings, address book, mailing list sorting, calendar events, etc.

For complete update details, please refer to the Thunderbird 135 release notes.

Install Thunderbird Mail Client on Linux

Many Linux distributions include Thunderbird by default, which can be installed using the default package management system, which ensures that you have all the necessary libraries, add desktop shortcuts, and make Thunderbird accessible to all system users. However, this method may not provide the latest version of Thunderbird.

To install Thunderbird from the default system repository, execute the following command:

 sudo apt install thunderbird # Debian, Ubuntu and Mint
sudo dnf install thunderbird # RHEL/CentOS/Fedora and Rocky/AlmaLinux
sudo emerge -a sys-apps/thunderbird # Gentoo Linux
sudo apk add thunderbird # Alpine Linux
sudo pacman -S thunderbird # Arch Linux
sudo zypper install thunderbird # OpenSUSE
sudo pkg install thunderbird # FreeBSD

Install the latest version of Thunderbird on Linux

If you want the latest Thunderbird 135, you can choose from two methods: PPA (Ubuntu-based system) or Snap Store (all Linux distributions).

1. Install Thunderbird (Ubuntu and its derivative version) through PPA

To install the latest version of Mozilla Thunderbird, you can use the PPA maintained by the Mozilla team.

 sudo add-apt-repository ppa:ubuntu-mozilla-daily/ppa
sudo apt update
sudo apt install thunderbird

2. Install Thunderbird via Snap (all Linux distributions)

Alternatively, you can use the Snap Store to install the latest version of Thunderbird on Linux:

 sudo snap find thunderbird
sudo snap install thunderbird

Download the official Thunderbird binary file

If you prefer to download Thunderbird 135 directly, please visit the Thunderbird download page and select "Thunderbird Distribution" under "Distribution Channel".

After the installation is complete, you can launch Thunderbird from the application menu or from the terminal. The interface is intuitive and easy to use, allowing you to seamlessly manage multiple email accounts, news feeds, and calendars.

If you are using an official binary, you can update to the latest version by: Help → About Mozilla Thunderbird → Update now .

Summarize

You now have the latest Thunderbird 135 installed on your Linux system, and it remains a powerful, privacy-conscious email client that keeps improving in terms of security, speed and availability.

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