Actually, the Post Office has been automated for a long time. The letter sorting machines really cut costs and mistakes. I think they got them in the late 90's. They could sort something like 30,000 letters an hour. You must be in some back woods location if the time clock is the only machinery they have. In the 90's even the smallest PO had computers. Some of their mail was sorted by machine in a nearby town.
"Junk mail" is how small businesses reaches customers that are not connected to the internet for reasons of money or location.
The USPS has experimented with fuel efficiency (hybrids, electric). MPG is affected by the weight of the mail, and the stop and go driving from box to box. On my route I drove two miles, walked ten miles. My last vehicle was a S10 with an aluminum screwed and glued body by Cushman. The newer vehicles are lighter and more efficient.
The data collection code and equipment will probably be provided by the businesses and agencies. I don't think the PO would be doing the coding.
BTW, the Post Office has no control of pricing or markets they can enter. They are also required to have universal delivery. When I was a rural route carrier, there was one delivery 2 miles down a one lane road. So I had to do a 4 mile trip whether I had mail for him or not. There was an outside chance there was some outgoing mail, and I'd get my butt reamed if I missed it.
There are the intangibles of the public servant/mailcarrier. Many lives have been saved, crimes solved and prevented, and child and animal abuse reported by mail carriers. Sometimes the only human contact the elderly have is their mailman. I used to check to see if one of my elderly customers remembered to take her medicine. We provide a sense of normalcy, and a human touch. There are a lot of lonely people out there, and a "hello, how are you" from the mailman might be enough to give temporary relief from the crushing loneliness many experience in this impersonal society.