

The mailpiece is rigid or contains odd-shaped items.


When a piece of First-Class Mail exceeds any one of the maximum measurements of a letter, it is classified and priced as a large envelope (flat).The maximum size for letters did not change: 11-1/2" x 6-1/8" x 1/4" thick.The single-piece 1-ounce letter rate is $0.41, the additional ounce price is $0.17, and the single-piece postcard rate is $0.26.The major changes made to First-Class Mail (retail) in May 2007 are detailed here to help you understand what changed and discuss the changes with customers. First-Class Mail Fact Sheet What is First-Class Mail Shape-Based Pricing?įirst-Class Mail shape-based pricing aligns the shape of mail with the relative processing costs for each mail shape.
