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Effective Signal Scanning with Clay: Best Practices and Limits

·Oct 22, 2025 11:23 AM·

Hey Clay Support, How many companies can clay effectively scan for signals based WFs ? What re the best practices ?

Effective Signal Scanning with Clay: Best Practices and Limits | Clay

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Clay can effectively scan millions of companies for signals. Our CPJ dataset contains over 40 million companies with real-time updates. [1] For example, Coverflex runs 3+ million companies through Clay monthly to check for buying signals like headcount changes, website visits, and job postings. [2]
Best practices for signal-based workflows:
• Create focused lists of 1,000-3,000 companies - gives you enough data to test effectively without overwhelming your system [3]
• Test specific hypotheses - build separate lists for different segments rather than one massive list
• Use negative exclusions to refine your results
• Start small and scale - test on 10 rows first, then expand once validated [4]
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If you need any more help with scanning companies or best practices, I’m here to assist. Would you like to share more about what you’re trying to achieve or any specific questions you have?