Weight Large not over Letter Envelope Package 1 oz. $0.44 $0.88 $ oz. $0.64 $1.08 $ oz. $0.84 $1.28 $ oz $1.04 $1.28 $ oz. → $1.48 $ oz. → $1.68 $ oz. → $1.88 $ oz. → $2.08 $ oz. → $2.28 $ oz. → $2.48 $ oz. → $2.68 $ oz. → $2.88 $ oz. → $3.08 $ oz. → $3.28 $3.41 After 13 oz. use Priority Mail. Postcard Rates:2 USA (inc. Territories & Possessions) : 29¢ Canada:80¢ Mexico:80¢ All others:98¢ Priority Mail ® Average 2-3 day delivery. Free packaging available at usps.com including Flat Rate Envelopes, three sizes of Flat Rate Boxes and other supplies. Express Mail ® Guaranteed overnight to most locations and includes $100 free insurance and tracking. Free packaging is available at usps.com Forever Stamp™ The Forever Stamp™ is good indefinitely as First-Class™ one-ounce postage, regardless of future price changes. It’s a Package Yes Is your item smaller than 6⅛” x 11½”? Is your item less than ¼” thick? Is your item smaller than 12” x 15”? No Does it weigh less than 13 oz? Yes Yes Yes It’s a Large Envelope It’s a LetterNo Is your item flexible? (Does your item bend at least 1” and not contain a rigid insert?) Is your item less than ¾” thick? Is your item non-machinable?* Yes Yes Yes Does it have uniform thickness**? (Is there less than ¼” difference in overall thickness, excluding the outside 1” border?) Current Rates as of April 17, 2011 Classify your mail by weight, size and thickness: Add 20¢ non-machinable surcharge Yes No *Non-Machinable as applied to Letters is defined as: Shape is square, or has an aspect ratio (length divided by height) of less than 1.3 or more than 2.5; is polybagged, polywrapped, or enclosed in any plastic material; has clasps, strings, buttons, or similar closure devices; contains items such as pens, pencils, or loose keys or coins that cause the thickness of the mailpiece to be uneven (see ); is too rigid; has thickness less than inch; has a delivery address parallel to the shorter dimension of the mailpiece; is a self-mailer that is folded and secured (see for additional standards to qualify as machinable); or is a booklet-type piece with the bound edge (spine) along the shorter dimension of the piece or at the top, unless prepared according to Source: DMM Current rates at: pe.usps.gov **Uniform Thickness as applied to Large Envelopes is defined as: must be uniformly thick so that any bumps, protrusions, or other irregularities do not cause more than 1/4-inch variance in thickness. When determining variance in thickness, exclude the outside edges of a mailpiece (1 inch from each edge) when the contents do not extend into those edges. Also, exclude the selvage of any polywrap covering (see ) from this determination. Mailers must secure nonpaper contents to prevent shifting of more than 2 inches within the mailpiece if shifting would cause the piece to be nonuniform in thickness or would result in the contents bursting out of the mailpiece (see ). Source: DMM No Does your item weigh less than 3½ ounces? START HERE: No No No No Yes