ZeroBounce

ZeroBounce offers email validation and deliverability services with a variety of pricing plans. The Pay-as-You-Go option starts at $20 for validating 2,000 email addresses, with credits costing $0.01 each. Monthly subscription plans start at $39 per month for the Starter Package, which includes 50 inbox tests, 50 email server tests, and 10 blacklist monitors. Higher-tier plans like the Team Package ($99/month), Pro Package ($249/month), and Enterprise Package ($999/month) offer more features and higher limits.