I’ve made a beta version of ThunderBrowse that deals with Thunderbird 3 tabs. This build allows users to change which tab system they like. You can either have TB2 tabs (in the messagepane) or you can choose to use the TB3 tab bar.
This currently doesn’t have the thank you page for all the donors in the summer of funding (give me a break, I have the flu [I'll try to get them added as fast as I can]).
This version of ThunderBrowse may have some bugs and might cause some problems (as it is a beta). I will not be responsible if anything goes wrong.
Thunderbird 3 Tab build will only work in Thunderbird installs. It currently doesn’t work in Postbox (I’ll fix it later).
If you are ready to try the new build, click here: http://www.thunderbrowse.com/thunderblog/download-manager.php?id=12
Let me know if you have any problems with this build and please remember to email all feedback to: beta[AT]thunderbrowse.com
And yes, I do know about the tab titles showing undefined. It’s a bug in Thunderbird.
Glad to see you are implementing native tabs, good move.