Harper sends purchase events to Meta using server-side tracking so you get accurate attribution even when browser pixels fail. Prepaid orders are sent on payment, COD orders are sent on delivery. Orders delivered after 7 days go through Meta’s offline events flow. Every purchase event includes new vs returning customer, profit margin, and product category — giving Meta stronger signals for ad optimization and reporting.

• Server-side Meta purchase tracking — no browser pixel dependency
• COD attribution: send events on delivery, not on order placement
• Auto-routes orders over 7 days to Meta offline events dataset
• Enriched signals: new/returning customer, profit, and category per order