Apollo dominates SMB/mid-market in NA. ZoomInfo wins on enterprise and phone numbers. Cognism leads in EU/GDPR compliance. Lusha is strong on LinkedIn-sourced contacts. No single database covers everything.
How to evaluate
Coverage in your geography and ICP, email accuracy, phone accuracy, refresh cadence, and compliance posture.
Database breakdown
Apollo: best SMB/mid-market value. ZoomInfo: enterprise depth. Cognism: EU compliance. Lusha: LinkedIn integration. Clay: build-your-own enrichment. Findymail: email finder. Hunter: pattern-based emails. RocketReach: light enrichment. Seamless: high-volume cheap. LeadIQ: CRM workflows. Apollo replacement candidates: see the alternatives section.
Combining databases
Many teams use 2–3 in parallel: one for primary enrichment, one as a fallback verifier, one for phone numbers.
How SendroAI Fits In
SendroAI works with any of these as data inputs — we focus on what happens after the list lands, not on owning the data.