The US post office was always a given. The mail just got through. Now and again something was lost, but it was rare. That is how I always felt.
But now it is different. I have not been receiving all of my mail. Clients send me mail that I do not receive. There are about a half dozen times in the last few months where I did not receive a piece of mail I was watching for. I do not know how many times I did not receive something I was not looking for.
I finally gave up and got a Post Office Box.