Appearance and Customization
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Search Results Sort By Date Not Relevance
Requires Restart
Makes search results sort by "date" instead of "relevance" by default.
Disable DragAndDrop (Thunderbird)
Requires Restart
A Thunderbird extension which disables drag and drop in the folder pane.
This extension prevents unintended folder movement.
NoiaButtons [Tb45-58] (discontinued)
The 'NoiaButtons' add-on offers cartoonish toolbar button icons (known from Noia themes) for default theme and lightweight themes. Further more lite silver and dark versions of Noia themes are included.
CustomizeMyBird
This add-on offers ui tweaks to improve Thunderbirds appearance (classic squared tabs, custom tab height, custom scrollbars, alternative Add-on Manager/Preferences appearance, compact main toolbars, toolbar icon sets and many more).
HTitle (discontinued)
Requires Restart
Hide title bar if window is maximized.
This add-on has been discontinued!
Legacy extensions support will be dropped in Firefox 57. If you interest in CSD on Linux, please track progress on https://bugzilla.mozilla.org/show_bug.cgi?id=1283299.
Add-ons Manager - Version Number (discontinued)
Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.
Folder Filters Button
Requires Restart
Just a very simple add-on that adds a toolbar button to execute the "Run Filters on Folders" from Tools menu.
Search as list
Requires Restart
Search results appear as list (as per the "Open email as list" button).
- return to facet view with shift+close [x]
- auto open list view when few results found
- column config./sort/toggle [IMG3&4]
- apply columns to search as list menu [IMG5]
Menu Wizard
Requires Restart
Customize menus : Helps removing, moving and renaming menus and menu items
Colorize important menu for ease of use! (use Style (CSS))
Change or disable any of used keyboard shortcuts
Support: Firefox, Thunderbird and SeaMonkey
Simple Locale Switcher
Requires Restart
An easier management of the user interface language
GNotifier
Add-on for Thunderbird that replaces the built-in notifications with OS native ones. It supports most Linux Desktop Environments as well as Windows 8.1/10.
Menu On Top (SuperMenu Avatar)
Move the Thunderbird menu bar to the top. Choose from a selection of visual styles + colors. Add frequently used bookmarks and an avatar icon without wasting precious screen space. Bookmark your favorite sites, emails, folders or configuration pages.
AdvancedTasks
Requires Restart
Thunderbirds Lightning Extension: Allows the use of Markdown in Task descriptions and renders them as HTML in the TaskView.
Hide C. Titlebar Plus Lite
Requires Restart
* "Maximize your content space by configuring Title-bar & floating main-menu".
* Configurable "Thunderbird" application-main-button at top-left corner!, like Firefox's one. (see sshots)
* "Close Current Tab"! as configurable Close-button action.
Sort and Search Customization Dialogs
Requires Restart
Sort and search for buttons in (any) toolbar customization dialog
Keep in Taskbar
Requires Restart
A simple plugin that makes the Close button behave exactly like the Minimize one.
Extra Format Buttons
Requires Restart
Adds a font size (in pixels), strikethough, subscript and superscript buttons to Thunderbird's Compose Window.
To create your own collections, you must have a Mozilla Add-ons account.