Useful Thunderbird Add-ons

by Leon

13 Add-ons in this Collection

Provider for Google Calendar by Philipp Kewisch

Rated 3 out of 5 stars 1,658 reviews

188,792 users

Allows bidirectional access to Google Calendar

Manually sort folders by Jonathan Protzenko, Itagaki Fumihiko

Rated 4 out of 5 stars 626 reviews

11,775 users

This extension allows you to manually sort (order) your folders in the folder pane of Thunderbird or automatically sort them, but in a better way. This extension also allows you to re-order accounts in the folder pane.

Emoji by Michael Ganss

Rated 4 out of 5 stars 64 reviews

24,978 users

Add emojis to your e-mails.

XNote++ by opto

Rated 4 out of 5 stars 133 reviews

16,480 users

Persistent sticky notes associated to emails. You can fulltext search with constraints/email them/print/bookmark/copy to clipboard.

If you have a large screen, you can even display the notes outside of TB's main window, so it won't hide anything.

Google Keep Tab by Era

Rated 5 out of 5 stars 29 reviews

4,346 users

Adds a button to open Google Keep in a new Tab

Quick Folder Move by Philipp Kewisch

Rated 4 out of 5 stars 204 reviews

7,312 users

When filing messages, a search box will show up allowing you to quickly enter the folder name you want to move to.

If no search term is entered, a list of recent folders will show up instead.

Windows Taskbar Unread Badge by Brandon Streiff

Rated 4 out of 5 stars 43 reviews

424 users

Put an unread mail count badge on the Thunderbird icon in the Windows taskbar.

GCalTab by Florent Tassy

Rated 5 out of 5 stars 12 reviews

1,750 users

GCalTab is a Thunderbird add-on that opens Google Calendar website in a Thunderbird tab. It features a beautiful dark mode thanks to the DarkReader algorithm.

BorderColors D by dreadnaut

Rated 4 out of 5 stars 34 reviews

7,958 users

Shows a colorful border around the "New Message" window, so you can tell different identities apart.

Builds on the original BorderColors and the "GT" version, adding different border styles.

Display Mail User Agent T by Toshi

Rated 4 out of 5 stars 30 reviews

11,575 users

Displays the mail program with which the selected mail was written

*This addon is compatible with Thunderbird after Web Extesnsions support. Since development and operation check are done on Daily, it may not work on normal Thunderbird.

Hide Local Folders for TB78++ by C-E

Rated 5 out of 5 stars 17 reviews

1,663 users

Removes the 'Local Folders' entry from the folder pane.
(The folder itself will stay existent.)
(Based on the original work of Alex Cabal.)

Minimize on Close by rsjtdrjgfuzkfg

Rated 4 out of 5 stars 83 reviews

42,194 users

Causes Thunderbird's main window to minimize instead of closing. You can still close Thunderbird through the menu.

Spam Scores by Christian Zaenker

Rated 4 out of 5 stars 18 reviews

1,765 users

Displays spam scores according to mail headers. Supports spam/ham score headers of Rspamd, SpamAssassin and MailScanner. The add-on adds a column with the overall spam score to the mail list view and shows details of any matched spam/ham rule.

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