A storage and stacking device for flat objects such as mail or newspapers cludes boxes for temporarily storing, transporting, and stacking the objects. Boxes are arranged on the stacking device at an angle of less than 90.degree. and coupled to a connecting element. The device has a fixed stack support associated with the boxes, and a movable stack support which is movable relative to the fixed stack support. The boxes and the fixed stack support are movable relative to one another. The boxes and the fixed stack support are formed by comb-like elements. The box comb-like elements comb through the fixed stack support comb-like elements during the relative motion of the box with respect to the fixed stack support. The box comb-like elements, the movable stack support and the fixed stack support are always in a positive contact with the stack of the objects.