For example, when you send a letter to some actor who is making a movie, and you send the letter to the place where the movie is being filmed?

What is Via Venue, and what is Through The Mail? I guess Through The Mail is when you send a letter to someone and he or she answers it.

Hello, i'm new here and i would like to know the meanings of some thins like VV, RTT, TTM and all that. Thank you.

Could you post again your picture? The link you have put doesn't work.

Did you send your letter to a now no valid adress, didn't you?