Helpful and unsettling messages use the same data. Five tests that tell you which one you are building, before the customer tells you for you.
Personalisation isn't about how much you know. It's about whether the customer would nod or flinch if they saw how you knew it.
The Product Lens, edition 18 — published Oct 14, 2026, 7 min read. Written by Ambar Utkarsh, product leader at Star Health.