How a Supplement Brand Uses Post-Purchase Email to Build Habit

The Retention Marketing Podcast with Fexingo: Email, SMS, and Loyalty for Repeat Customers · Jun 23, 2026 · 11m · transcript

Lucas and Luna examine how one supplement brand uses a carefully sequenced three-email post-purchase campaign to turn first-time buyers into daily users. The episode breaks down the exact timing — day 3, day 10, day 21 — and why each interval targets a specific psychological barrier: product uncertainty, routine resistance, and subscription inertia. Lucas shares open-rate and click-through data from a 2026 case study, while Luna challenges whether the '21-day habit claim' is backed by real customer behavior or just marketing lore. No theory — just a repeatable framework any DTC…