Here are a few guidelines to follow when designing a postcard or envelope to be mailed through the USPS.
Direct mail relies on USPS postcard regulations and requirements for proper automated mailing and delivery. Learn more here with Modern Postcard!
For example, a postcard 5-1/2 inches long by 3-1/2 inches high has an aspect ratio of 1.57. An aspect ratio between 1.3 and 2.5, inclusive, is required for automation compatibility. Automated Area Distribution Center (AADC)—A distribution center that uses multiline optical character ...