Appearance and Customization

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Customizable LDAP AddressBook Auto Complete Requires Restart

Provides (restores) customizability of auto complete items for LDAP addressbook items, and more features.

Rated 5 out of 5 stars (1)
423 users

CustomizeMyBird

CustomizeMyBird add-on offers ui tweaks to improve Thunderbirds appearance (squared tabs, custom tab height, alternative Add-on Manager appearance, compact main toolbars and more).

Rated 5 out of 5 stars (5)
1,042 users

CuteButtons

Adds icons to buttons and/or menus.

Rated 4 out of 5 stars (92)
7,201 users

Date on Thunderbird Requires Restart

在thunderbird statusbar显示年月日

Rated 4 out of 5 stars (1)
23 users

Disable About Something Requires Restart

Provides ability to disable "about:*" pages by the configuration.

Rated 5 out of 5 stars (1)
578 users

Disable about:config Requires Restart

Disable about:config feature of Firefox and Thunderbird.

Rated 1 out of 5 stars (1)
917 users

Dstocks Requires Restart

Displays stock market indices in the status bar.
Delay of updates on option (default : every 10 mn) or on click.
Right-clic to choose your indice and to see the other ones.

Rated 5 out of 5 stars (2)
263 users

Dybutar

Dynamic creation of bookmark-style toolbar buttons which you can customize.

Rated 5 out of 5 stars (10)
140 users

Element Inspector

In the DOM Inspector,quickly navigate to the any elements

Rated 5 out of 5 stars (33)
4,401 users

Email Addresses in Message Headers Requires Restart

Shows email addresses in message headers, including those of contacts, and provides control over message header presentation.

Rated 3 out of 5 stars (2)
395 users

Enhanced Priority Display Requires Restart

Enhanced thread pane display of message priorities.

Rated 5 out of 5 stars (6)
1,332 users

Extensor

Quick access to add-on functions from a toolbar panel: Options, (De)Activate, Details, Home page, Review page, Donation page, Uninstall, Restart application.

Rated 5 out of 5 stars (3)
234 users

Extra Format Buttons Requires Restart

Adds a font size (in pixels), strikethough, subscript and superscript buttons to Thunderbird's Compose Window.

Rated 4 out of 5 stars (11)
6,608 users

Firesizer Requires Restart

Allows you to resize the window to specific dimensions.

NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.

Rated 4 out of 5 stars (133)
24,390 users

G-Hub Lite Requires Restart

Add Google Tabs to Thunderbird! Services supported: Voice, Calendar, Drive, Docs, Sheets, Slides, Hangouts, Plus, Photos, Contacts, News, Maps, & many more. Need Google Apps? Check out G-Hub Pro: http://www.schiffner.com/index.php/software/g-hub-pro

Rated 4 out of 5 stars (4)
4,480 users

Get/Send-Button (minimized MagicSLR) Requires Restart

A combined Get/Send-Button and a popup menu with additional functions.

You may want to use it together with the following Add-ons:
* Send Later Button (by me / Alexander Ihrig)
* Send Later (by jikamens)

Rated 4 out of 5 stars (47)
11,844 users

globalChrome.css Requires Restart

Provides global user stylesheet.

Not yet rated
672 users

GNotifier

Add-on for Firefox and Thunderbird. Replaces built-in notifications with the OS native notifications. It supports most Linux Desktop Environments, Windows 8.1 & 10.

Rated 5 out of 5 stars (32)
15,115 users

Gravatars Requires Restart

Show a column with the Gravatar-picture and sender-name in email folders.

Not yet rated
86 users

Hide Badge Icon Requires Restart

Hides the badge for new messages of the Thunderbird app icon on Mac OSX.

Not yet rated
13 users