A method and system for sorting mailpieces in a single pass is provided. The system consists of a mail feeding unit, a mail scanner and a mail distribution unit having a number of receiving bins. Mailpieces are fed into the system one at a time through the scanner to determine the mailstop of the mailpiece. A control system assigns unique mailstops to unique receiving bins. Each mailpiece is deposited in a receiving bin assigned with its mailstop. When the number of mailstops exceeds the number of receiving bins, the control system empties a receiving bin and assigns the new mailstop to the emptied bin so it can receive mailpieces having the new mailstop. Accordingly, the system can sort mail destined for “m” mailstops into “n” receiving bins where “m” is greater than “n”.