https://www.siliconvalley.com/2020/12/25/unprecedented-mail-volume-delays-christmas-gifts/

SAN RAMON, Calif. (AP) — Some who mailed holiday presents weeks early this year found they didn’t act early enough as Christmas arrived with their gifts stuck in transit.

The U.S. Postal Service said on its website that it was “experiencing unprecedented volume increases and limited employee availability due to the impacts of COVID-19.”