Postal regulations dictate specific dimensions for postcards to qualify for mailing at the postcard rate. Generally, rectangular cards must be at least 3.5 inches high by 5 inches long and no more... Read more »
Standard dimensions for postcards intended for direct mail marketing vary, impacting postage costs and design considerations. Common options include 4″ x 6″, 5″ x 7″, and 6″ x 9″, with larger formats... Read more »
The United States Postal Service establishes specific dimensional requirements for mailpieces classified as postcards. These specifications dictate the minimum and maximum length, width, and thickness a card must adhere to for successful... Read more »