I am signed up for Informed Delivery from the USPS and every once in awhile mail I am supposed to get on a certain day (according to their email) doesn't arrive. I report it (you can report it online) and I get the standard "wait 3 more days, it may arrive" and 9 out of 10 times, after I report it, it shows up. Both regular mail and packages. Not sure if it's because I reported it or because it was genuinely delayed. A few years ago, myself and about 6 neighbors were all the victims of stolen identity, I got a notice about a credit card being opened in my name when I didn't do it (thank you to discover for the alert). Fortunately I caught it before any charges or other cards were opened. We all wondered if it was someone at the post office. We all had Ring cameras and looked back on the footage, no one unusual went into the mailboxes (we have a walking postal delivery person, all the mailboxes are attached to the house, not on the street). Who knows...