Rated 4 out of 5 stars

Please update this useful add-on, it no longer works with most recent versions of Thunderbird. :-(

Update: I have emailed the author, and he has stated that he no longer wishes to maintain this extension.

His own words: "Hello. Unfortunately just upgrading compatibility version does not works for this extensions. There are some technical difficulties moving it on to the latest version of Thunderbird. It is unlikely that I will do upgrade."

So, is there anyone else knowledgeable enough with extensions that would be willing to fork this extension and continue it? All of us users of this extension would greatly appreciate it.

Source code available here: https://github.com/snakelizzard/flexible_identity