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Data Quality

Data Quality

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Why Your Cold Email List Is Smaller Than You Think

Jun 26, 2026

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5 min read

Why Your Cold Email List Is Smaller Than You Think

The funnel math behind list building: most raw leads never survive enrichment, verification, and qualification. So a good list gets built 5 to 10 times bigger than the campaign that ships from it.

The Ken Newsletter

Scaling breaks stuff daily. We document the fixes so you don’t have to figure it out alone.