Your question is Evaluate Direct Mail Card Economics. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You are evaluating an acquisition program for a co-branded airline credit card. The team wants a clear way to judge both campaign performance and whether the customers acquired through direct mail are worth the cost over time. You need a metric framework that captures response, approval, activation, and long-term value, not just volume.
What metrics would you use to evaluate the performance and cost-to-quality ratio of a direct mail acquisition campaign for a co-branded airline credit card?