JohninKS, in the case of UPS leaving stuff, it has been cellphones which the sender, T-Mobile, specifically paid for a signature on delivery. I understand your point, though. Fortunately, at our little PO the guys are really good about pointing out the caveats.

I had a houseplant sent to me from New England, by a nursery. Clearly stamped "LIVE PLANT" with noted temperatures to keep it at AND to be hand-delivered. Instead the postperson put it in our metal mailbox at the end of the end of the driveway in 100 degree plus heat with no notice at the door or anything. We get most of our mail at the PO, so don't check the box out front that often. I though the company was using UPS or FedEx, so it wasn't until Rog came home that night and happened to check the box that we found the, by then, dead plants. They'd been cooked.