You could have my postal carrier, he scans all tracked packages first thing in the morning when he loads them so he doesn't have to do it when he leaves them at the door, so there's no proof that they were actually left at the door. I've not received several things because he insists he left them at the door but the delivery scan time stamp says like 5:00 a.m. and he doesn't deliver at 5:00 a.m. I waited 8 months for a package once that was just sitting somewhere in the post office and was eventually delivered to me in tatters.