Email Verification Tips & Deliverability Guides

Apollo vs ZoomInfo vs Lusha - Email Accuracy Test 2026 (We Verified 50,000 Contacts)

We pulled 50,000 contacts from Apollo, ZoomInfo, and Lusha and ran every single one through BounceZero's 5-stage verification pipeline. The accuracy gaps between providers are bigger than their marketing suggests - and no provider came close to a safe-to-send list out of the box.