 USPS Domestic Parcel Post was an affordable method of sending large parcels of up to seventy pounds and a maximum combined length and girth of one hundred and thirty inches via ground transportation across the U.S.Effective January 27, 2013, the USPS renamed its parcel post service from 'Parcel Post' to 'Standard Post'.Effective January 17, 2016, the USPS renamed the service again, from "Standard Post" to "USPS Retail Ground", a name intended to resemble those of competing services UPS Ground and FedEx Ground.