D2C brands lose significant profit by sending blanket discounts to every customer who abandons a cart. Existing marketing platforms credit subsequent purchases to these campaigns but cannot reliably distinguish customers persuaded by an incentive from those who would have purchased anyway. Consequently, brands subsidize organic conversions, overspend on discounts, and optimize attributed revenue while silently eroding contribution margin. They need an AI-powered decision layer that determines whether intervention is economically worthwhile, selects the minimum effective nudge—including no message—and proves the resulting incremental profit through controlled holdouts.