CompactHeader Requires Restart Nabarmenduak
Add symbol in header plane to switch between compact and expanded view. Options to switch between one or two lines compact view, which buttons should be displayed in header pane. New beta version available from http://compactheader.mozdev.org/
Mail Merge Requires Restart Nabarmenduak
Create and Save or Send Multiple Individual and Personalized Messages from a Draft
CardBook Requires Restart Nabarmenduak
A new Thunderbird address book based on the CardDAV and vCard standards.
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
Mail Redirect Nabarmenduak
Allow to redirect (a.k.a. "remail") mail messages to other recipients.