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Every B2B database claims 95%+ accuracy on their landing page. Independent testing tells a different story. Here's the ranked list — and where Prospct lands.
How we tested
We sent 25,000 cold emails through 8 vendors over 30 days on the same target audience (US SaaS, 200–1000 employees, VP-and-above titles). We measured hard bounces, soft bounces, spam complaints and reply rate.
The 2026 ranking
1. Prospct.io — 96.3% deliverability. Waterfall verification + MX-aware catch-all detection. 2. Cognism — 95.1%. Strong EU coverage. 3. Apollo.io — 88.1%. Broad but stale. 4. ZoomInfo — 87.4%. Best in enterprise procurement. 5–8. Lusha, Hunter, RocketReach, Seamless.ai all under 85%.
Pick your winner
See how Prospct stacks up in our head-to-head comparisons: vs Apollo, vs ZoomInfo, and vs Lusha.
Tags:Buying GuideDatabaseDeliverability
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