Various sources indicate that some post offices are specifically prioritizing the delivery of Amazon parcels (and presumably highest-cost business mail in gener

Various sources indicate that some post offices are specifically prioritizing the delivery of Amazon parcels (and presumably highest-cost business mail in general) over other mail, so it would make sense if civilian letters and postcards are eating the vast majority of the delay. https://www.inquirer.com/news/philadelphia/usps-tracking-in-transit-late-mail-delivery-philadelphia-packages-postal-service-20200802.html https://www.inquirer.com/news/philadelphia/usps-tracking-in-...