Is There Anything I Can Do About A Lousy Mailman?

Can I hijack for question? Nearly 40 years ago I was a summer sub carrier, and did lots of different routes. This was long before barcodes and automatic sorting of addresses. They never let me sort the mail into delivery order, which was good since I would have started the route about noon some days. What’s the process nowadays? Back then there were little cubbyholes, two addresses per, and you sorted left or right. How much is automatically sorted into delivery order, and how much is manual? Does the OCR sometimes miss things, or are Ss and 5s sometimes confused?

To the others: back when I did it, my office at least was very serious about delivering the mail quickly and accurately. I know the postal inspectors watched me at least one day. The mistakes we see are either things sticking together, or letters addressed to the same number, different street. If a missort is in the middle of a stack of letters, it is very likely not going to be noticed.