This document discusses a loyalty program called Family Rewards for Philips. It proposes testing email subject lines and content to maximize registration for the program. Initial tests showed registration increased by 45% with personalized subject lines. The full launch achieved a 39% open rate and 12% click through rate. Boosters were then sent to increase profile completion and coupon redemption rates. The document concludes by outlining an engagement plan with timelines and KPIs to keep customers engaged over time.