This article introduces the most interesting new features, improvements, and changes visible to users which are available in Thunderbird Release for Desktop. For full details, please refer to Thunderbird Desktop release notes

Thunderbird 140 / ESR 140 Eclipse

Dark Message Mode

Thunderbird now automatically displays your messages in dark mode when enabled in your operating system settings. If there are display issues with a message in dark mode, you can disable dark mode for that message by sliding the toggle to the right to disable dark message mode.

Appearance Settings

Make Thunderbird yours across all your folders and accounts with a single click in the Settings (panel). Change your message list layout between Cards and Table view, adjust your Cards View, and set your default sorting order and threading options with ease.

Native OS Notifications

Leverage the speed and ease of your Operating System’s built-in notifications, whether you’re on Windows, Linux, or Mac. Quickly delete, archive, or use customizable actions directly from your notifications and get more done with your day.

Account Hub

Adding a new account to Thunderbird is now easier than ever. Connect all of your emails, address books and calendars in a few easy steps.

Manual Folder Sorting

Don’t like the order for your custom folders? Just click and drag to arrange them exactly how you want.

Experimental Exchange Support

Natively set up a Microsoft Exchange account in Thunderbird by enabling a preference.

Export for Mobile

Generate a QR code to quickly transfer your account settings and credentials to your Thunderbird for Android app.

Horizontal Scroll for Table View

Lots of tabular data? Let the message list scroll horizontally, like a spreadsheet or file manager.