Welcome to the evolution of Supernova!

With revolutionary code improvements, Nebula sets the stage for faster delivery of new features, reinforced stability, stellar quality-of-life enhancements and visual refinements.

Fast and Fluid

Feel the difference smarter code makes possible! Interactions with your message list are faster, the email space is more responsive, and Thunderbird is more stable and reliable.

Cards View

The updated design makes scanning your emails faster, with a more attractive layout and an improved threads experience. Plus, the height of email cards adjusts automatically based on your settings, so everything looks just right.

Accent Colors

Enhanced theme compatibility, especially for Linux users on Ubuntu and Mint. Your Thunderbird will better blend with your desktop environment, seamlessly matching the system’s accent colors.

Folder Pane

A bundle of improvements including faster rendering and searching of unified folders, multi-folder selection capabilities, and better recall of message thread states.

Rust Revolution

We've overcome major roadblocks to bring Rust into Thunderbird. This paves the way for better code, shared features between desktop and mobile, and faster development time. It's a game-changer for our developers and for our users.