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Bounce rate benchmarks for cold email
Under 2% is healthy. Over 5% gets you flagged. Here's what's actually happening in 2026.
Healthy: under 2%
Verified lists, clean source data.
Risky: 2–5%
Domain reputation starts to slip.
Dangerous: over 5%
Smartlead, Instantly, and inbox providers will throttle or suspend.
By source
Apollo: 3–8% raw. Clay: 2–6% raw. Verified: under 2%.
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