I used Eudora for many years before it was finally done away with. There are any number of functions in Eudora that are missing from Thunderbird. One of the most important ones for me was the ability to have a copy of an outgoing email posted to a specific folder. The only way I have found to do that with TB is to manually go to the "Sent Mail" folder and move the sent email to the folder it needs to be in.

Is there any way I can accomplish this with one move as I did in Eudora.