"As always, domestic Sunday package delivery is available in many major markets with Priority Mail Express® for an additional fee.1 But now we're working with a

"As always, domestic Sunday package delivery is available in many major markets with Priority Mail Express® for an additional fee.1 But now we're working with a leading internet retailer in select markets to deliver your online orders on Sunday. " https://www.usps.com/priorityyou/welcome.htm?ns_campaign=sundaydelivery https://www.usps.com/priorityyou/welcome.htm?ns_campaign=sun...