Add-ons
To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReviews for Custom Buttons by maniootek
Rated 5 out of 5 stars
Does not work with Thunderbird 60+
Any solution?
Rated 5 out of 5 stars
After Thunderbird update from version 46 to 52 custom buttons stopped to work. Please fix it asap.
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