It helps that you also have a postal service that gives a damn. The USPS has some great people that will bend over backward to make things right, but as an organization they don't give a damn.
As an example I accidentally put the wrong zip code on an order, my fault I know but, it spent weeks bouncing from post office to post office in the Houston area. Instead of looking up the address, it seems that they randomly sent it to another post office. When I called to see about fixing it, the response was "We can't do anything until it has stopped moving for five days."
And that is just one of many many examples.
