Thunderbird changes the way you do email with tabbed email, and a new set of search tools helps you find your emails faster.

Tabs

If you like Firefox's tabbed browsing, you're going to love tabbed email. Tabbed email lets you load emails in separate tabs so you can quickly jump between them. Perhaps you're responding to an email and need to refer back to an earlier email. Tabbed email lets you keep multiple emails open for easy reference.

Double-clicking or hitting enter on a mail message will now open that message in a new tab window. Right-clicking on messages or folders will open them in a tab in the background.

When quitting Thunderbird, visible tabs will be saved and will be restored when you open Thunderbird the next time. There is also a new Tab menu on the Tab toolbar to help you switch between Tabs.

Search

The new search interface in Thunderbird contains filtering and timeline tools to pinpoint the exact email you're looking for. Thunderbird also indexes all of your emails to help you search even faster. Your search results are displayed in a tab so you can easily switch back and forth to your search results and other email.

Message Archive

If you think you're going to need an email in the future but want it out of your inbox without deleting it, archive it! Archiving helps you manage your inbox and put your email into a new archive folder system.

Selecting the Archive button or hitting the 'A' key will archive your email.

Customize Your Email Experience

Thunderbird is flexible to suit your personality, to give you the features you need, and to fit your work style. Change how Thunderbird looks or add as many features as you want.

Thunderbird Look & Feel

With Personas, lightweight "skins" allow you to change the look and feel of Thunderbird in an instant. Hundreds of skins are available from the latest movies, famous landmarks, and Japanese tattoos. You can also choose from several Themes that dress up all the different icons in Thunderbird.

Smart Folders

Smart Folders helps you manage multiple email accounts by combining special folders like your Inbox, Sent, or Archive folder. Instead of going to the Inbox for each of your mail accounts, you can see all of your incoming email in one Inbox folder.

Add-ons Manager

Find and install add-ons directly in Thunderbird. You no longer need to visit the add-ons Web site---instead simply fire up the Add-ons Manager. Not sure which add-on is right for you? Ratings, recommendations, descriptions and pictures of the add-ons in action help you make your selection.

What's New

Changes

  • Thunderbird on Windows now requires Windows 10 or higher
  • Thunderbird on macOS now requires macOS 10.15 or higher
  • Updated message pane customization defaults for new profiles

Fixes

  • All menu items in "Help" menu were disabled after sending a message on macOS
  • Pane splitter was still enabled for hidden folder pane
  • Folder tree expanded under drag-and-drop did not re-collapse when item was dropped
  • Deleting messages from message list sometimes scrolled list to bottom, selecting bottommost message
  • Ascending/descending message sorting was not available in vertical view
  • Message list was not updated when message was deleted from server outside of Thunderbird
  • Message header was occasionally missing in message preview
  • Message composer title was not visible on macOS when theme was enabled
  • Context menu with "Copy link" option was not available in calendar event descriptions
  • Improved localization of OpenPGP strings
  • "OK" and "Cancel" buttons were mostly hidden in address book Edit List dialog
  • Various visual and UX improvements