USPS Marketing Mail letters that have one or more of the nonmachinable characteristics in 201.2.1 are subject to the nonmachinable letter prices in 243.1.3.Įxamples of a nonmachinable letter include:.

Larger postcards must meet the required aspect ratio.

Presorted First-Class Mail letters are subject to a nonmachinable surcharge if they meet any of the characteristics in 201.2.1.

Maximum weight: First-Class Mail and Periodicals nonmachinable letters 3.5 ounces USPS Marketing Mail nonmachinable letters less than 16 ounces. Letter-size, card-type mailpieces made of cardstock may have finished corners that do not exceed a radius of 1/8 inch.

Rectangular, with four square corners and parallel opposite sides.

Maximum for letters and other cards: 11-1/2 inches long, 6-1/8 inches high, and 1/4 inch thick.

Maximum for First-Class Mail card prices: 9 inches long, 6 inches high, and 0.016 inch thick.

For letter-size pieces 0.009 inch thick if more than 4-1/4 inches high or 6 inches long, or both.

Minimum: 5 inches long, 3-1/2 inches high, and 0.007 inch thick.

Machinable letters must not meet any of the nonmachinable characteristics ( 201.2.0). Maximum weight: First-Class Mail, machinable letters and USPS Marketing Mail machinable letters: 3.5 ounces, Periodicals letters: 3.5 ounces. Machinable mailpieces must meet specific standards, including size, shape, and weight.

To be “machinable” and eligible for “presort” prices, letters and cards must have an accurate address and be able to be processed on Postal Service equipment.

For the purposes of determining mailability or machinabilty, the length is the dimension parallel to the address as read ( 601.1.1.2). The Postal Service classifies letters and cards into one of three categories: machinable, nonmachinable, and automation.

These classifications are based on how efficiently mailpieces can be processed on Postal Service equipment. Mailpieces are classified by shape and by the way they are prepared. USPS Marketing Mail Eligibility Decision TreeĢ01 Quick Service Guide Physical Standards for Commercial Letters and Postcards.Designing Letter and Reply Mail (PUB 25).

Usps flat rate envelope dimensions