Appearance and Customization
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
Send Later Button Requires Restart
A simple button to invoke the (already existing) send later functions.
Simple Locale Switcher Requires Restart
An easier management of the user interface language
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.
In the DOM Inspector,quickly navigate to the any elements
Adds buttons to toggle the using the default page colors and fonts, and the page defined colors and fonts.
Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.
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.
Send YouTube video links to an external player, downloader, etc,
Stylish Tools Requires Restart
Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey
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.
ToggleFullHeaders Requires Restart
Allows you to customise the message panel buttons to add a "Toggle Headers" button that will switch between showing and hiding the full headers.
Auto Zoomer Requires Restart
Keep a preset zoom level across thunderbird restarts.
Usefull on High DPI screens.
Pic Zoom Requires Restart
Zoom in and out of any image on a page
Tategaki Requires Restart
Tategaki allows vertical writing-mode on mail compose window.
Provides ability to override UI elements' label, tooltip text, etc.
Path Linker Requires Restart
Contact DnD Requires Restart
Enables one to assign a photo to a contact by dragging and dropping it from the local filesystem.
Large Fonts Requires Restart
This add-on enables you to change the font size of the plain text editor of Thunderbird.