We rebuilt retention from the ground up using a system-first approach, starting with a full inbox and lifecycle audit. Core flows were redesigned—including welcome, post-purchase, replenishment, and win-back—while behavioural and value-based segmentation was introduced to ensure relevance at every stage. We also refined offer logic and send-time strategy, aligning email and SMS into a single, cohesive retention engine designed to drive predictable, compounding growth.