If I send something out I would be offended if I did not get an email stating they rcvd package. A thank you is even better.

When I rcv a package I make it a point to send a message ASAP acknowldging rcpt of package and a big thank you. Someone sent me sticks from THEIR stash and paid shipping so that I may enjoy something I did not have before.

I would be upset. Even an email saying..I never got it. I would hope the person would be dead or moved to ethiopia unexpectedly.