Just my 2 cents in anecdotal bs.. I had a buddy about ten years ago ship a lb of bud our other friend without telling him. He got a letter to go pickup from the post office (not knowing cause fucktard didn't give him heads up). They arrested him at the post office and executed a search warrant on his house..
That was years ago, but having you come get the package and arresting you is/was a thing at some point.
I had a Wild situation happen. I had a darknet order of testosterone get lost in tracking and transit.. finally delivered, the package was torn apart, run over, covered in tire marks, there was a letter explaining the package damage occured and I could file a claim if needed. I shit you not the vials of testosterone were untouched and still wrapped in bubblewrap. Literally just nestled in what can no longer be considered a package in a big USPS ziplock
I didn't sleep for a couple days