A storage tray for storing mail items in the sorting outlets of a mail sorting machine having a carousel with buckets that hold mail items and move in a transport direction such that the mail items describe an arcuate path when released from the buckets. The storage tray includes a bottom surrounded by side walls defining a horizontal top portion of the tray and a horizontal bottom portion of the tray, wherein the bottom of the tray includes a landing wall and a jogging wall intersecting in the bottom portion of the tray, the landing wall extending from the jogging wall in a first direction towards the top portion of the tray at an angle relative to the horizontal bottom portion of the tray, and the jogging wall extending away from the landing wall in a second direction along a generally arcuate curved path toward the top portion of the tray. The shape of the jogging wall preferably corresponds generally to the path of a mail item released from a bucket carousel of a sorting machine.