Mail Redirect Compatible with Firefox 57+ Nabarmenduak
Allow to redirect (a.k.a. "remail") mail messages to other recipients.
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
CardBook Requires Restart Nabarmenduak
A new Thunderbird address book based on the CardDAV and vCard standards.
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
Mass Mail and Personal Mail