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Issue with Duplicate Email Addresses in Contact Database | Clay

Issue with Duplicate Email Addresses in Contact Database

·Nov 04, 2025 07:53 AM·

Hello all! I noticed that email waterfall provided the same email address for 2 different contacts. I used Zerobounce as a validation tool.

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3 comments

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Clay Support
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This is expected behavior in email waterfalls. Multiple providers can find the same email address because each provider runs independently and may discover the same valid email for different contacts at the same company.
The waterfall continues running until a valid email is found or all providers have run. Since both contacts work at IBM Security, it's common for them to share a general company email like "aaron@ibm.com."
To handle duplicates, use our Auto-dedupe function at the bottom-right of your table. Enable automatic deduplication and select the email column as your dedupe identifier to remove duplicate email addresses. [1]
Clay Support
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Was that helpful?
Clay Support
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If you still need help with managing duplicate emails or using the Auto-dedupe function, I’m here to assist. Would you like to provide more details about what you’re trying to resolve or understand?