The U.S. Postal Service is handling an unprecedented volume of holiday mail and packages, causing multiple-day delivery delays. On the USPS website is this notice:

Alert: USPS is experiencing unprecedented volume increases and limited employee availability due to the impacts of COVID-19. We appreciate your patience and remain committed to delivering the holidays to you.

The Washington Post reports FedEx and UPS “have cut off new delivery orders for some retailers, rerouting surging mail volumes through the overwhelmed Postal Service” … (click to read more)

December 14 – 21 is expected to be the Postal Service’s busiest week of the holiday mailing and shipping season. This has been an extraordinary year of unprecedented challenges given the COVID-19 pandemic — and the Postal Service was expecting significant increases in the volume of mail and packages. Sunday delivery has been expanded in select high package volume locations, and the agency already delivers packages on Sundays in most major cities. Mail carriers will also deliver Priority Mail Express packages for an additional fee on Christmas Day in select locations.