Has anyone experience lost mail? Not package but mail. USPS Informed Delivery notified me that my mail containing my PPPs from the Sheriff's office was to be delivered yesterday. But nothing was in my mailbox. Not even the other promotional mail that they said would also arrive. Fast forward to today, all the mail they said that were coming today arrived, but none from yesterday. I checked the boxes on their website indicating I didn't receive Wednesday's mail. Is there anything else I should do? Or just be patient, and hope that it will eventually arrive...