Add extra features and styles to make Thunderbird your own.
Check out our Mobile Add-ons site.
by willlma on Jan. 27, 2014 ·
After the add-on builder went down, I spent a couple days repeatedly restarting my browser. This add-on is a huge time-saver.
To create your own collections, you must have a Mozilla Add-ons account.
Create an Add-ons Account
or log in to your current account
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