Send frequency policy

Max emails per subscriber per week: 3

This case study models 5000 subscribers over 8 weeks. Each subscriber has an individual optimal frequency tolerance. Sending above that tolerance increases short-term clicks slightly but raises unsubscribe risk sharply; sending below it under-monetizes engaged subscribers.

8-week outcome

Total clicks generated—

Subscribers who unsubscribed—

Net engagement value—

Subscribers by tolerance (pink = sent above tolerance, red ring = unsubscribed)