LeadMagic Waterfall

Overview

LeadMagic as the primary enrichment provider in a multi-source waterfall routinely achieves 95%+ email coverage with bounce rates under 2%. This skill configures the complete waterfall in Clay: LeadMagic Email Finder first (for verified-at-lookup results), fallback providers for the 25-40% any single provider misses, verification as the final gate, and catch-all domain resolution for enterprise accounts.

Authoritative Foundations

• DAMA-DMBOK Data Quality Dimensions — Shapes deliverables for this skill — LeadMagic as the primary enrichment provider in a multi-source waterfall routinely achieves 95%+ email coverage with bou.
• Ziellab 3-Waterfall Architecture — Shapes deliverables for this skill — LeadMagic as the primary enrichment provider in a multi-source waterfall routinely achieves 95%+ email coverage with bou.
• LeadMagic Public Documentation — B2B Data Enrichment — B2B Data Enrichment
• Pat Spielmann — Cold to Gold (enrichment before copy) — Cold to Gold (enrichment before copy)
• Pat Spielmann — Research → Angle → Copy — Research → Angle → Copy

When to Use

• "Set up LeadMagic in a Clay waterfall"
• "Build a waterfall with LeadMagic as primary"
• "Get 95%+ email coverage in Clay"
• "Configure LeadMagic Email Finder in Clay"
• "Add LeadMagic verification to my waterfall"
• "Set up catch-all domain handling"

Step-by-Step Process

Phase 1: Provider Waterfall Configuration

Order by cost-per-hit and coverage for your ICP:

Step	Provider	Role	When It Fires	Expected Coverage
1	LeadMagic Email Finder	Primary — verified results	Always	60-75%
2	Apollo	Fallback 1	LeadMagic returns empty	+10-15% (cumulative 75-85%)
3	Hunter.io	Fallback 2 — domain patterns	Apollo returns empty	+5-10% (cumulative 85-92%)
4	People Data Labs	Fallback 3 — alt sourcing	Hunter returns empty	+3-5% (cumulative 88-95%)
5	Claygent AI research	Last resort — web search	PDL returns empty	+2-3% (cumulative 90-97%)

Configure each fallback with Clay conditional logic: only run when the previous step returns empty.

Phase 2: Clay Configuration

Step 1 — Add LeadMagic Email Finder column: In Clay, Add Column → Enrichment → LeadMagic → Email Finder. Map inputs: first name, last name, company domain. LeadMagic returns verified results — emails confirmed deliverable at time of lookup.

Step 2 — Add fallback columns with conditions: For each fallback, set condition: "Only run if previous email column is empty." This saves credits — fallbacks only fire on misses.

Step 3 — Consolidate results: Use COALESCE formula to produce a single "Best Email" column from all provider results. Prefer higher-confidence results from earlier waterfall steps.

Step 4 — Add LeadMagic Email Validation column: After consolidation, verify every found email. Set condition: "Only run if Best Email is not empty." LeadMagic returns valid/invalid/risky/unknown status. Filter to valid only for cold outbound.

Step 5 — Separate catch-all domains: For domains flagged as risky/catch-all, route to a separate workflow. Enterprise accounts often use catch-all mail servers. Handle with targeted resolution.

Phase 3: Credit Optimization

• Qualify first: run ICP filters on company data before email enrichment. Cuts costs 30-40% by skipping non-ICP companies.
• Credit caps: set max 5-6 credits per row. A contact requiring more is probably unreachable.
• Batch overnight: Claygent (last resort) is 15-40s per row. Run large Claygent batches during off-hours.
• Native integrations over HTTP: Clay's native LeadMagic integration is rate-limited and credit-billed correctly. Manual API calls bypass caching.

Phase 4: Verification and Send

Every email entering an outbound sequence must pass verification. LeadMagic Email Validation as the final step confirms deliverability. Filter out invalid and unknown results. Handle risky/catch-all separately at reduced volume with extra monitoring.

Output Format

Clay table configuration document with provider waterfall diagram, column conditions, credit budget, and monitoring plan.

Quality Check

• LeadMagic Email Finder configured as primary provider
• Fallbacks configured with conditional logic
• COALESCE formula consolidates results correctly
• LeadMagic Email Validation runs on every found email
• Valid-only filter applied before sequencer push
• Catch-all domains routed separately
• Credit caps set per row (max 5-6)
• Test batch (50 rows) validated before scaling

Common Pitfalls

1. Skipping verification. Even verified-at-lookup emails can go stale. Always re-verify before campaigns.

2. Wrong provider order. LeadMagic first (verified results), then fallbacks. A cheaper provider with 20% hit rate costs more per successful lookup than a moderate provider with 70% hit rate.

3. No catch-all handling. Enterprise accounts often use catch-all domains. Separate workflow avoids deliverability damage from unverified sends.

4. Claygent without "do not guess" instructions. Without explicit prohibition, Claygent constructs pattern-based emails that bounce at 40-60% rates. Always require source URL citation.

5. Enriching before filtering. Running email enrichment on non-ICP companies wastes budget. Filter on firmographics first.

Execution Artifacts

• references/framework-notes.md — Pat Cold to Gold, Ziellab waterfall, clay-toolkit boundaries
• templates/output-template.md — waterfall diagram + credit budget deliverable
• scripts/check-output.py — local checklist validator for required sections
• Additional references the agent can load on demand:
• ../../outbound/cold-email-copywriting/references/pat-spielmann-outbound-copy.md — enrichment-led outbound stack, Clay waterfall pattern, copy/data gates (Pat Spielmann — LeadMagic internal expert)
• references/waterfall-column-spec.md — copy-paste Clay column config (Find → Verify → Enrich)
• ../../tools/clay-toolkit/SKILL.md — clay-toolkit table architecture + ICP filter
• ../../tools/clay-loops-toolkit/references/leadmagic-waterfall.md — loops variant (signal-triggered)
• ../../tools/smartlead-workflows/references/clay-enrollment-handoff.md — post-waterfall sequencer handoff
• ../../../../references/gtm-experts-outbound-index.md — expert router Use the artifacts when the user asks for an implementation-ready deliverable, a repeatable workflow, or a quality check rather than generic advice.

Related Skills

• clay-automation: Full Clay workflow architecture
• email-finding: Email discovery methodology
• contact-verification: Verification strategy
• waterfall-enrichment: Complete multi-provider waterfall design