Abstract: Preferred embodiments pertain to anti-toppling devices and methods related thereto.

Abstract: Preferred embodiments pertain to a mail (e.g., mail flats) stack correction system. In some embodiments, the system can include a transporter having a laterally movable transport surface, a first moving device connected to the transporter, a pusher having a generally upright pusher surface movable generally over the transport surface, a second moving device connected to the pusher, at least one detector positioned to detect stack errors of flats located on the transport surface, and at least one controller configured to control at least one of the first and second moving devices in response to detection by the detector.