Is it possible to install more than one copy of Thunderbird at once?
I could really make a case for needing three copies...
One for old, classic personal email. (Several years old, but I still reference some technical messages occasionally. And I just simply don't want to loose it.)
A second one for my current personal email.
A third one for business mail.
I took a look at it and I tried to do it by changing some stuff in the app\appinfo\appinfo.ini file but it doesn't look that's enough.