The systems and methods described herein relate generally to the electronic recordation of the transfer of a package from a shipper to a responsible postal carrier. In one embodiment, a method of recording the acceptance of a package from a package shipper shipped via a post service includes the steps of: generating a unique header number to preface a record of package transactions made over a time period for a specific shipper, the header number being unique within the post service, wherein each package transaction is made with a centralized computer system and has an associated delivery confirmation number unique within the post service; transmitting the unique header number and transaction record to the post service; generating a scannable indicia representative of the unique header number; and scanning the indicia to confirm acceptance of the package by the post service, wherein the indicia is scanned by a post service representative.