In some example, a computerized method includes sorting mail, wherein sorting mail for a mail piece comprises reading an encoded value located on the mail piece. Sorting the mail also includes decoding the encoded value to determine an identification of a class of the mail piece and an identification of a service type of the mail piece. Sorting the mail includes performing the following operation in response to determining that the mail piece is undeliverable as addressed: performing final disposition of the mail piece using at least one of the identification of the class of the mail piece or the identification of the service type of the mail piece derived from the encoded value, in response to a determination that the mail piece is an actual undeliverable as addressed mail piece.