list-segment-builder

# List Segment Builder Turns the user's own list/CRM/GA4/ecommerce export into behavioral segments (engaged-90d, cart-abandoners), attribute and RFM tiers, lifecycle-stage segments (new, active, lapsed, win-back), and a suppression list (unsubscribed, hard-bounced, spam-complained, consent-withdrawn). It defines **who each segment is and who must never be mailed** — email-creative-builder and email-sequence-designer then compose for those segments; this skill does not send, design flows, or score the program. ## Quick Start ``` Build email segments from my list export: [path]. Goal is retention. ESP export attached. ``` ``` Make engaged-90d, lapsed, and cart-abandoner segments from my ecommerce + ESP export, and give me the suppression list. [CSV] ``` ``` Map my list to RFM tiers and lifecycle stages so I can reuse the same audiences across every campaign. [CRM export] ``` ## Skill Contract **Expected output**: a **segment map** in four buckets — (1) **behavioral segments** grouped by activity (opened/clicked recency, cart-abandon, browse-abandon), (2) **attribute + RFM tiers** (recency/frequency/monetary from the user's own order data), (3) **lifecycle-stage segments** (new → active → at-risk → lapsed → win-back), and (4) a **suppression list** (unsubscribed, hard-bounced, spam-complained, consent-withdrawn) — each segment named with a size labeled **Measured** (counted from an exported column) or **Estimated** (inferred, method stated), informing the SEND **E (Engage...