The Postmaster General’s office estimates labor-intensive door-to-door delivery costs an average $353 a year. Curbside delivery averages $224; cluster boxes, just $160. The Postal Service, currently making 54 million curbside deliveries and 40 million to cluster boxes and central locations, has been moving toward collective deliveries at shopping malls, business parks and newer residential developments.

“A balanced approach to saving the Postal Service means allowing USPS to adapt to America’s changing use of mail,” Issa said in a statement. “Done right, these reforms can improve the customer experience through a more efficient Postal Service.”