Marketing 90-Day Lapsed-Buyer Winback in Klaviyo: A 4-Segment, 6-Email Flow With Claude Writing the Copy A 24-message winback matrix — 4 segments × 6 emails — for buyers who haven't purchased in 60-90+ days. Includes the Klaviyo segment conditions, the cadence, the Claude copy prompt, and the $48,200 case study. 12/25/2025
