Hunter
Stands out: The default finder API, with MCP and a widely used free Chrome extension.
Watch out: Built around work email, so it is not a mobile-number product.
Not the right fit for
- Teams that need mobiles as the core product
- Buyers who want a sequencer in the same login
ZeroBounce
Stands out: Validation plus quality scoring on one meter, with a real free 100-credit allowance and a public $99/month subscription.
Watch out: Pay-as-you-go starts at $39 for 2,000 validations if you do not want a subscription. Heavy lists will burn the 10,000-credit ONE cap.
Not the right fit for
- Teams that needed a finder, not a verifier
- High-volume senders who will outgrow 10k/month immediately