On July 28, 2021, the Postal Regulatory Commission (PRC) approved increasing the size limit for a Presorted First-Class Mail (FCM) Postcard. The new 9″ by 6″ maximum size card has a slightly different minimum thickness of .009″ compared to the previous maximum size dimensions of 6″ by 4.25″ with a minimum thickness of .007″. (The minimum .007″ thickness still applies to cards less than 6″X9″).
Previous dimension restrictions made it easy for First-Class Postcards to “get lost” in the mailbox as larger pieces pulled away attention, and marketers didn’t have the needed space to sell products or services. The Postal Service argued that the proposed change would make the First-Class Postcards more valuable by creating new opportunities for marketers and nonprofits to take advantage of technologies such as QR codes and variable personalization making them even more effective.
Being able to send larger cards using First-Class Postcards rates will also give mailers faster delivery service circumventing the recent reduction of delivery standards recently implemented.
See the size comparison below: