Earlier quoted context omitted.
USPS is quite remarkable given their costs. Based on the volume of mail handled there are many horror stories, but their actual error rates are very good. It does sound like you're in a particularly bad location. If you want better you'll have to pay more. Shipping within the US is awesome. Living in any other country is very enlightening. https://about.usps.com/what-we-are-doing/service-performance...
I would hope a "particularly bad location" wouldn't encompass the entire Salt Lake metro area (+1M pop) but my experience has been the same throughout the many places I've lived in the valley. You'd think a bad location would be isolated to a particular post office. By the stats on this page I'm in one of the better locations though (SLC). I agree shipping in the US is awesome. I'm still amazed how well it works. USP…
I've been using PaperKarma for awhile, which has significantly reduced the amount of junk mail I get. It's been pretty effective, we're down to only a couple pieces of junk mail per day (most of which is stuff for previous residents that I've never seen before)