Thunderbird Extensions
Thunderbird Add-ons
Remember Mismatched Domains - "The Remember Mismatched Domains extension for Firefox and Thunderbird adds a "Don't warn me again about this certificate for this domain" checkbox to the Domain Mismatch and Expired Certificate warning windows." (133 visits)
https://addons.mozilla.org/firefox/2131/
The Best Extensions for Thunderbird 2.0 - by Sal Cangeloso (70 visits)
http://www.xyzcomputing.com/index.php?option=content&task=view&id=1031
Thunderbird Account Order - "Each time a new account is added it appears at the bottom of the mail list. One new account I wanted to move near the top, but Thunderbird does not give an option to reorder accounts. The answer is to edit prefs.js file." (49 visits)
http://www.emphasisdevelopment.com/wp/03-2007/thunderbird-account-order/
Thunderbird Extension: Folderpane Tools - This extension allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen. (99 visits)
http://www.chuonthis.com/extensions/folderpane.php