Its cheaper for UPS to have the Post Office deliver its own packages than to pay their own drivers. UPS and the PO are both making money off of it otherwise they wouldn't be doing it. Fed Ex Ground delivers almost twice as much to the PO than we do. I delivered over 100 pkgs today to the PO of UPS Basic.
Believe it or not its big business. UPS also delivers the USPS' bulk mail to the USPS.
