All postcards, letters, and large envelopes (or flats) must be rectangular, otherwise an additional charge may apply. Additional size restrictions apply depending on the type of mailpiece you're sending. How to Send a Letter or Postcard: International: Get step-by-step instructions on mailing ...
Prices for First-Class Mail are based on an item’s size and weight. In 2010, these prices ranged from 28 cents for a postcard and 44 cents for a regular 1-oz. piece of mail to $3.26 for a large 13-oz. package. Delivery Times The USPS estimates that First-Class deliveries take ...
The size limits for packages shipped internationally will vary based on the shipping service and the destination country. Distance: The USPS uses zones to determine the cost to ship a package from the point of origin to its final destination. The higher the zone, the greater the distance and ...
Domestic mail is classified by size, weight, shape, content, service, and other factors. Managed Mail (MM) tray—A stackable cardboard or plastic container with an enclosing cardboard sleeve and plastic strap that is used to transport letter mail to or between post offices. Manifest Mailing ...