USPS postcard size

Outcome: Follow this guide to design a postcard that survives the mailbox test and drives measurable replies within 2–4 hours of design work. Skill level: Beginner to intermediate. Timeframe: One afternoon for design, plus 5–7 business days for printing and mailing through USPS. According to the Data & Marketing Association (2023), direct mail marketing generates a 4.4% average response rate…