Is there anyway to cluster emails by convo in thunderbird.. similar to gmail?

click on the first icon on your message plane. (the same line where the 'sender' and 'subject' is.)


the icon is to display message treads. it will cluster the emails in the same thread like in message boards.





if you can't find that button, click on the rightest icon which looks like a window. choose 'thread' in the drop down menu.