Abstract: A first mail carrier includes a stiff flat back portion, an open pouch connected at the bottom of the back portion at a lower half thereof, a stiff flat flap connected at each side of the back portion and a handle connected to each flap. The pouch includes elastic at the top for ensuring that mail carrier contents do not fall out. A second mail carrier includes a sack, a rigid member connected to the top of the sack for holding the sack open and for retaining the shape thereof, a strap connected to the sack that may include a quick attach/release mechanism and/or a strap adjuster, and a cover flap for the sack. The mail carriers may be used together as a mail carrier system for carrying different sized mail.