Here's how you can lower your overhead on postage:
Flip the sender and recipient addresses around and don't place a stamp on it. The mailman has to send it back to the sender, who, in this case is actually the recipient, because of the missing postage. HA!
Flip the sender and recipient addresses around and don't place a stamp on it. The mailman has to send it back to the sender, who, in this case is actually the recipient, because of the missing postage. HA!