Hunter.io Cold Email Case Study: How We Hit 41% Open Rate and 6.2% Reply Rate (1,200 Sends)
The Experiment: 1,200 B2B Cold Emails in 6 WeeksThe Results: 41% Open Rate, 6.2% Reply Rate, 3.8% BounceWhy Bounce Rate Was Only 3.8% — The Verification EffectWhat Worked, What Didn't…
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April 21, 2026