Retention was an acquisition problem.

The business came to us with a retention brief: churn was rising, and the existing lifecycle programme — onboarding sequences, win-back campaigns, loyalty offers — had been iterated on for a year without moving the number that actually mattered to the board, contribution margin. Every lifecycle metric available to the internal team was improving: open rates, click rates, even short-term reactivation rates. Margin kept falling regardless.

The instrumentation phase found the real problem upstream, in acquisition, not in lifecycle. One paid channel was bringing in a large volume of low-intent, highly price-sensitive customers who churned within two billing cycles regardless of how good the onboarding sequence was — and the lifecycle team was spending most of its effort trying to retain exactly this segment, because it was the largest one, not because it was the most valuable one. We re-cut the entire customer base by second-order value — realistic lifetime contribution, not first-purchase size — and found that customers acquired through two other channels were worth roughly four times as much over their lifetime as the channel receiving the most budget.

We reallocated acquisition budget away from the underperforming channel entirely rather than reducing it incrementally, and redirected the lifecycle team’s effort toward the two higher-value segments. Contribution margin rose 22% over the following two quarters, measured against the client’s own billing system.