Which requirement governs direct mail regarding minimum height/length and rectangular shape?

• A. Pantone CP (CMYK equivalent)
• B. OCR Software
• C. Digital Distribution
• D. US Postal Service Requirements

Answer: (D)

Direct mail pieces have to follow the mailing standards set by the U.S. Postal Service, which specify both minimum height and length and require a rectangular shape. These rules are in place so the mail can be fed, processed, and sorted efficiently by automated equipment. If a piece falls outside the size ranges or isn’t rectangular, it can be flagged as nonmachinable or incur extra charges, affecting deliverability and cost. The other options cover color systems, scanning software, or distribution methods, none of which govern the physical dimensions or shape of a direct mail piece.