Abstract: A method of monitoring the delivery of mail pieces by the postal service utilizes a data processor. A batch mailing includes selected mailing pieces to be monitored with each selected mailing piece being identified with a multi-digit number uniquely identifying a respondent therefor and the mailing piece. When the mailing piece is received the respondent telephonically reports the identifying number, date of receipt and condition of the mailing piece to the data processor. This information is stored by the data processor and is used to generate daily and batch reports showing, for example, date of receipt according to geographic location and/or pre-sort level of the mail pieces.