Currently, when using Thunderbird in threaded view, the subject line for each thread is the subject of the original, root email. I would like to change this so that it is the subject of the most recent email. For example, the following thread
*- Original subject |--> Re: Original subject |---> New subject |----> Re: New subject
when collapsed displays in the inbox as
*- Original subject
whereas I would like it to display as
*- Re: New subject
Despite my best efforts, I cannot find how to change this. Is it possible without editing the source and compiling my own version?