Automated (e.g., robotic) mail tagging, traying, sleeving, and palletizing devices are disclosed. A monitoring system is also disclosed. In embodiments, the monitoring system is configured to operate with (e.g., monitor and/or control) one or more of the automated devices disclosed herein to facilitate actual physical mail matches the digital files provided to the USPS for postage discounts received on same mail. By comparing the digital information regarding the mail item identifier, the tray identifier, and the pallet identifier with the stored physical information received from the one or more scanners; and identifying whether or not any discrepancies exist between the digital information regarding the mail item identifier, the tray identifier, and the pallet identifier and the stored physical information received from the one or more scanners users can ensure actual physical mail matches the digital files submitted to USPS for postage discounts of same mail.