I have had a few of my many international packs delivered by someone not in uniform after hours and I usually have to sign for those which is gut wrenching lol I usually bring them in and dont open them for a few days to a week. Probably over kill but puts my mind as ease. I'd bring it in but leave it inside for a few more days. Read below.
Upon looking it up why they arent in uniform:
1. Rural Route Carriers, who are contracted by the Post Office to deliver mail to a route that is so far from the office, that they would be hard to supervise.
They frequently deliver their route in their own vehicle
2. Temporary Carriers, who are hired intermittently, but are not full-time employees.
3. Probationary carriers who are within their first 90-180 days of work and havent been granted a uniform or vehicle yet.
You aren't doing yourself any favors and I will explain, in the eyes of law enforcement bringing the package into your home can be considered acceptance. It doesn't quite sound legal and attorneys will tell you they can't do that but let me tell you a story.
Years and years ago now, when UGLs were a new thing, I was on an anabolic board and a guy who went by dragon gets popped one day. The feds what they did was waited until he went to work and did a controlled delivery on his wife at home. She already knew not to sign for or accept anything that comes addressed to him so she opens the door tells the federal agent dressed like the mailman sorry she won't sign for anything have a nice day and closes the door.
At the last second the federal agent in his moment of glory chucks the package through the door over her head and before she can even get it and throw it back at him she's tackled by a bunch of DEA agents. They made her call D at work and basically the deal is he goes down or she does.
The judge ruled the package entered the residence lawfully I don't know how but that's what stuck. Guilty verdict and he got ten years in prison. Ten fucking years.
If you get a pack from a black listed country say china for example if you aren't sure do not bring the damn thing into your home whatever you do. Get a sharpie and write return to sender and let it stay outside. This only helps if agents are sitting in the bushes ready to pounce but they don't always do that. Sometimes they booby trap the box such that they know if it's been opening and it will shoot ink or something on you to identify who opened it.
I make no guarantees but I would if it were me I would find a guy willing to take the risk for some cash. pay him $100 to take the pack a few miles down the road and open it and if he makes it back and there's no evidence it's wired you should be good to go.