Appearance and Customization

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about:config Button

Open about:config to change hidden settings that cannot be edited from the Options window. All Mozilla based programs have settings that can not be changed in the options window.

Rated 5 out of 5 stars (3)
2,951 users

Add-ons Manager - Version Number

Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.

Rated 5 out of 5 stars (18)
1,768 users

All Menus Button

Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.

Rated 5 out of 5 stars (6)
2,334 users

ansitel Click-to-Dial Thunderbird Requires Restart

Click-to-Dial Plugin für ansitel VoIP-Telefonanlagen zum Markieren und Wählen von Rufnummern in Mozilla Thunderbird.

Not yet rated
14 users

Auto Zoomer Requires Restart

Keep a preset zoom level across thunderbird restarts.
Usefull on High DPI screens.

Rated 5 out of 5 stars (2)
276 users

Before Tabs Toolbar Requires Restart

Adds a toolbar before the tabs.

Rated 5 out of 5 stars (7)
444 users

Big Navigation

enlarging the navigation links on the pages

Rated 5 out of 5 stars (6)
629 users

Chat Notifier with Pop-Ups Requires Restart

Allows to be notified when you receive chat message in Thunderbird.

Rated 3 out of 5 stars (3)
203 users

Checkbox Column Requires Restart

Adds a custom column to Thunderbird's messages list (thread tree), making it easier to select multiple messages on devices with a touchscreen display.

Rated 5 out of 5 stars (1)
84 users

Classic Pop-up Alerts

This addon returns the old view of the pop-up notifications, as in Firefox 4.0 - 43.0

Not yet rated
570 users

Close last tab with middle-click

THIS ADD-ON IS NOW UNNECESSARY FOR FIREFOX 31 AND UP!

Tired of middle-clicking on the last tab in Thunderbird, only to have nothing happen? This add-on embraces the industry-standard middle-click behavior of IE, Chrome, and Firefox (3.6- and 31+).

Rated 5 out of 5 stars (3)
170 users

Collapsed Unread Requires Restart

Shows unread email count for collapsed folders even if the unread mails are in subfolders.

Rated 3 out of 5 stars (5)
596 users

Color Folders Requires Restart

Color your Folder Treeview Icons!

Rated 4 out of 5 stars (145)
29,386 users

Color Transform

Transform the colors of entire web pages or selected elements. Combine predefined themes with basic transforms. Save transforms for specific web domains.

Rated 4 out of 5 stars (18)
2,801 users

Colorific

Colorize entire web pages. Configure themes using sliders and drag-and-drop. Set domain preferences for automatic coloration.

Rated 3 out of 5 stars (9)
1,608 users

Column Reader

Web reader for wide screens and long documents. Read with pleasure in attractive layouts.

Rated 5 out of 5 stars (12)
875 users

ColumnsWizard Requires Restart

Adds some magic to the mesasges list columns!
With this addon you can:
* Add a custom column
* Set the default columns for any new folder.
* Show hidden columns in the Conversation Tab.
* Edit a mail header value for a single message.

Rated 4 out of 5 stars (6)
1,087 users

Contact DnD Requires Restart

Enables one to assign a photo to a contact by dragging and dropping it from the local filesystem.

Not yet rated
16 users

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)
520 users

CuteButtons - Crystal SVG Requires Restart

Adds colourful icons to buttons and menus

Rated 4 out of 5 stars (105)
7,368 users