What’s New in
Thunderbird 115 Supernova

Supernova wordmark
115 | 102 Learn how to get the new look
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Dynamic Unified Toolbar

Supernova features a single dynamic toolbar, presenting frequently used and contextual options based on the tab or Space that is currently active. Take full control by customizing the toolbar and window layout to perfectly fit your workflow.

The all new Unified Toolbar
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Beautiful Iconography

More than just a refreshed set of graphics, Supernova introduces beautiful icons with a more consistent visual style unique to Thunderbird. Our new designs remain sharp and pixel-perfect at any density setting.

The improved icons
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Easy Density Control

Working with multiple monitors and display resolutions? Supernova lets you dial in the perfect density settings and font sizes for the entire application, with just a single click from the App Menu.

Default density icon
An example of the relaxed density An example of the relaxed density An example of the relaxed density
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Intuitive App Menu

The new Application Menu (≡) in Supernova is now keyboard-accessible, and redesigned for faster, easier navigation. Fewer submenus, persistent global options, and consistent iconography combine to create a much more intuitive experience.

The new AppMenu
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New + Sortable Folder Modes

Supernova gives you more control by introducing sortable Folder Modes. Display all of your Tags in the Folder Pane, turn on and off Local Folders, or move your favorite Folder Mode sections up and down with one click. Less scrolling, more productivity.

Eye-Catching Tags View

Tags are a familiar and powerful part of your workflow, so Supernova adds an eye-catching “Tags” view to the Folder Pane. Quickly jump to your custom, color-coded tag categories to find and filter your messages even faster.

The improved folder pane
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Modernized Cards View

Supernova’s new Card View is our version of the well-known vertical layout for the Message List, perfect for people used to modern webmail. Card View emulates a mobile interface list with multi-line support, offering a more comfortable appearance to reduce cognitive burden.

An example of a message in card view An example of a message in card view An example of a message in card view An example of a message in card view An example of a message in card view
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Improved Address Book

Supernova continues to iterate on the modernized Address Book introduced in Thunderbird 102. You’ll enjoy a new tabular view, an improved Edit view, delete buttons, and better accessibility.

The improved address book edit pane
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Expanded Accessibility

Supernova substantially improves Thunderbird’s keyboard navigation and screen reader accessibility across the entire application. We’ve also greatly expanded the ability to navigate Mail content and buttons using the TAB and arrow keys.

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Improved Calendar Design

As part of an ongoing effort to modernize and upgrade Thunderbird’s Calendar, Supernova introduces an improved “mini-month” layout, improvements to the day/week/month grid, a pleasing color palette, and several more minor changes.

The improved calendar
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More to come!

Supernova is constantly evolving. Throughout the next year, we’ll deliver many improvements to existing Supernova features and introduce brand new ones. Upgrade to version 115 and experience the future of Thunderbird!