There should be no excuse not to send a pm to the sender. I will accept extreme hardship and death,maybe, but otherwise ... I know some say you should send a gift from the heart and not require public acknowledgment; but with the cost of things today plus the increases in postage,l I want confirmation that my package or envelope got there and the person appreciated it. If not, then I would correct their address in my listing or take their name off the list for any future mailings or trading. Things are going to get tough economically over the next few years for many of us. We can't afford to waste finances or our efforts.