Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Massive Extender 126.96.36.199-signed.1-signed
Extends the Mozilla Add-on Collector allowing to install multiple add-ons with a single click. NOTE: This addon is no longer in development. It is still here for the convenience of existing users. Do not download unless you know what you are doing!!!
About this Add-on
- Fixed bug that could prevent custom toolbars from initializing properly in Firefox toolbox.
NB: Not compatible with Firefox 17 and later.
This add-on is not compatible with your version of Thunderbird because of the following: