Postcard Marketing ROI: The Real Math

The response-rate reality

Industry studies consistently put direct mail response far above email and display ads — often several times higher for house lists and strong local offers. But averages do not matter; YOUR math does. Response rate is a function of list quality, offer strength, and repetition.

The only formula you need

Break-even response = campaign cost ÷ (profit per new customer × pieces mailed). Example: mail 2,500 postcards, all-in cost around a few hundred dollars, average customer worth $80 profit — you need well under 1% response to break even. Lifetime value makes it a landslide.

What lifts response (in order)

• The list/route: right neighborhoods beat clever copy.
• The offer: specific, valuable, deadline-driven.
• Repetition: 3 touches to the same area beats 1 touch to 3 areas.
• Size and stock: bigger, thicker cards get kept.
• Tracking: QR code or unique promo code — measure or it did not happen.

Postcards vs EDDM

Addressed postcards target specific people (your customers, a purchased list). EDDM blankets whole neighborhoods without a list. For local businesses, EDDM usually wins on cost per door; addressed mail wins on precision. Many winners run both.