158: Jeff Lee: How Calm’s Billion customer message machine unites martech and engineering

Jeff built a billion-message marketing machine at Calm with three people. But it was a journey. Push notifications sparked a three-year battle until a new CPO, unburdened by notification trauma, green-lit the project in six weeks. It was a four-year battle for ML recommendations but the data tells an unexpected story. Jeff also shares tactics for winning over the most skeptical product and engineering teams. It starts with operational empathy by taking a stab at a working prototype of your idea but also recognizing that product and martech decisions often stem from personal bias that requires champions who have experienced positive outcomes.More