We Analyzed 1,000 B2B Cold Email Campaigns. Here's What Actually Drives Reply Rates.

We spent time analyzing 1,000 B2B cold email campaigns. The findings changed how we think about outreach. The Biggest Number: 38% 38% of emails across these campaigns never reached a real person. Not caught by spam filters. Not ignored. Simply undeliverable because the contact no longer existed at that email address. Job changes. Company acquisitions. Abandoned inboxes. Changed email formats. This wasn't a messaging problem. It was a data problem. What Separates 5% Reply Rates from 0.8% When we segmented campaigns by reply rate, a clear pattern emerged: High performers (5%+): Verified contacts within 30 days of sending Refreshed lists every 60-90 days Bounce rate consistently under 2% Segmented by actual buying signals, not just industry + headcount Low performers (under 1%): Lists 6-12+ months old without refresh Bounce rates 5-10% No systematic verification process Segmenting on broad demographic data only Same industries. Same email copy. Same SDRs in many cases. Different data disc