Ep.334 How One “P.S.” Created 12 Million Users

In 1996, Hotmail faced a problem every startup knows—great product, zero marketing budget. So they built the ad into the product.At the bottom of every email sent through their platform, they added one simple line: “P.S. I love you. Get your free email at Hotmail.” Each user became a walking billboard. Within 18 months, Hotmail had 12 million users—at a time when the entire internet had only 70 million people. Microsoft later bought it for $400 million.The brilliance wasn’t the message—it was the mechanism. Instead of chasing attention, they embedded virality into the experience itself.Today’s Move: Ask one question about your product or service—how can using it automatically promote it? Build the loop once, and let it sell itself.Send us Fan Mail