Switch the signature on/off or choose a new one from your predefined set...
Help make Firefox better. The Add-on Compatibility Reporter enables you to report if the Firefox add-ons that you're using are working properly.
Extension to mimic Outlook Express Stationery.
Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!
Displays icon for user agent of received mails.
Quickly get to the latest nightly build of Lightning relevant to the version of Thunderbird and the OS you're on.
Collections are groups of related add-ons that anyone can create and share.Explore Collections