System and method for validating mailings received

A system for validating mail trays comprising:

• one or more mail processing devices for performing subsequent pass processing of a plurality of mail trays containing a plurality of mail items in accordance with a sort scheme;
• one or more processors associated with the one or more mail processing devices for:
• receiving mail tray identification data associated with the plurality of mail trays based on previous sort processing performed at one or more mail processing environments, the mail tray identification data comprising mail owner identification, registered with a postal authority, for each of the plurality of mail trays uniquely associating a mailer to each mail tray;
• and
• a reader associated with the one or more mail processing devices for reading the mail tray identification data for each of the plurality of mail trays during the subsequent pass processing,
• wherein the one or more processors is configured to:
• validate the received mail tray identification data against the read mail tray identification;
• and generate discrepancy data based on the received mail tray identification data and the read mail tray identification, the discrepancy data identifying any missing or unexpected tray and its corresponding mail tray owner.