Appearance and Customization
A simple button to invoke the (already existing) send later functions.
Click-to-Dial Plugin für ansitel VoIP-Telefonanlagen zum Markieren und Wählen von Rufnummern in Mozilla Thunderbird.
Shows lowercase email addresses in message headers and their tooltips.
Adds a custom column for Sender Frequency to the thread pane
Classic Pop-up Alerts No Restart
This addon returns the old view of the pop-up notifications, as in Firefox 4.0 - 43.0
GNotifier No Restart
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.
Shows email addresses in message headers, including those of contacts, and provides control over message header presentation.
custom additions to Stylish extension
No need flash plugin on embeded youtube movies
Hides the badge for new messages of the Thunderbird app icon on Mac OSX.
Allows the user not to restore tabs at startup in Thundertbird
Enables one to assign a photo to a contact by dragging and dropping it from the local filesystem.
Zoom in and out of any image on a page
Let's show the calendar color on Lightning reminders!
Provides ability to disable "about:*" pages by the configuration.
Squared Australis Tabs (Tb) No Restart
A small and simple extension, which replaces the curved tabs of the Australis design with squared ones, similar to Thunderbird v14 and prior.
Profile Buttons No Restart
A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.
Version Number in Add-ons Manager No Restart
Easily viewable version info in the Add-ons Manager on Firefox/Thunderbird 24.0 and later.
Also restores the add-on version number on Firefox/Thunderbird 40.0 and later.
Add-ons Manager - Version Number No Restart
Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.
about:config Button No Restart
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.