An apparatus and method for categorizing and certifying a batch of mail uses a random statistical scheme. The mail will be categorized in terms of print quality, accuracy with the statement sheet accompanying the mail, deliverability, and the like so that the Post Office is relieved of having to manually inspect the mail and can arrange scheduling, equipment and manpower for the processing of such batch of mail. The mail will be certified with regard to the correctness of postage for mailing the batch.