With a Tray Dapper, you will be able to slide it anywhere in the tray to retain your mail upright, organized, and right where you want it. 
 
Need more than one?  Take advantage of a bulk discount on The Tray Dapper specifically engineered to work in the DPS (MM) trays used to deliver the dps mail in many USPS delivery vehicles.
 
Save $ by gathering others in your office and buying in bulk quantities of 10.  We save money in boxes, order processing, shipping labels, and shipping them in a bulk package of 10, so we transfer ALL of our savings over to you.