Same goes for the USPS! I'm a former rural carrier - packages arrive in a big metal cage and a clerk would sort them by throwing them to the appropriate carrier's package hamper. This is the same procedure at every post office where I subbed at. Who knows how packages are handled prior to arrival at the post office or by contract companies whose employees could care less about package handling. Just some first hand observations. The trick is plenty of packing materials inside and tape the Hell out of the box so whatever is inside can't escape!
