Concept
Waterfall Enrichment
Querying multiple data providers in sequence until a verified data point is found — yields 80%+ coverage instead of 30-50%.
Waterfall enrichment queries multiple providers (Apollo, LeadMagic, Findymail, Datagma, Hunter) in sequence, stops at the first hit, and only pays for successful matches. Result: coverage lifts from ~30% (single provider) to 80-90%.
Order matters: cheapest first, most expensive as last fallback. A good Clay waterfall hits 92% coverage for ~$950/month — far cheaper than a single-provider deal like ZoomInfo Pro ($15-30K/year).