Stylish Tools :: Add-ons for Thunderbird

Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey

How To - Install Addons or Extensions in Thunderbird - Short Guide

How To Pare Down the Message Header in Thunderbird 3

Thunderbird Information Management Systems and Services

Mozilla Thunderbird - Wikipedia

Ext] CustomizeMyBird - mozillaZine Forums

Helping You Find Compatible Extensions

The new Thunderbird UI is now available and it's a long overdue refresh

Automatic email printing with Mozilla Thunderbird

Create a Mailing List in Thunderbird

AttachmentCount :: Add-ons for Thunderbird