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How does auto-deduplication work when pushing daily webhook results?

April 2026

Quick Answer

## Auto-Deduplication for Daily Webhook Pushes **Clay** deduplicates data at insert time by comparing incoming rows against existing records in your destination table. ### How It Works - Compares new records against existing data using a deduplication key (email, domain, ID, etc.) - Only inserts records that don't already exist in the table - **Example:** If Day 1 has 50 results and Day 2 has 52 results with 50 duplicates, only the 2 new records are added ### Requirements - The destination table must be active - The deduplication key must remain consistent across pushes

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1 Answer

Auto-Deduplication for Daily Webhook Pushes

Clay deduplicates data at insert time by comparing incoming rows against existing records in your destination table.

How It Works

  • Compares new records against existing data using a deduplication key (email, domain, ID, etc.)
  • Only inserts records that don't already exist in the table
  • Example: If Day 1 has 50 results and Day 2 has 52 results with 50 duplicates, only the 2 new records are added

Requirements

  • The destination table must be active
  • The deduplication key must remain consistent across pushes
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