NeverBounce
Stands out: A long-running list-cleaning API used next to marketing and recruiting outbound, not a finder.
Watch out: Plans start at $49/mo, sold as credit packs. You still need a finder if the list has no addresses yet.
Not the right fit for
- Teams that need email finding
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