Soooo we had a stamp made with our address on it so we dont have to write it a million times. BUT i want to put it on the back of the envelope because it looks better since i am handwriting the people we want to invite on the front. Will USPS not send them if the address is on the back? I know they would LIKE it to be on the front, but I am not sure if they will send if it is on the back. Any input? I was thinking of sending one to see if the person actually gets it. Good idea? Thoughts?