I firgured out that my USPS Delivery guy WILL NOT come to my door and knock, he will just sit in his vehicle and sometimes write me a pink slip stating "sorry we missed you". It's as if he expects me to sit outside till he gets there, I have stated to my local PO that all he has to do is knock and or open the door drop off the package and it'll be fine/safe. FEDex/UPS have no issues opening my door, leaving the package/s, locking the door and closing the door, and it's just that simple.
I will get that "delivery date" and it will be here 2 days after or sometimes before, so I welded my mailbox shut in which forces him to get off his high horse and come directly to my door.