ClearBounce

ZeroBounce is an email verification, scoring and deliverability platform helping businesses improve their inbox placement. The service detects email typos, nonexistent and abusive email accounts, spam traps and other risky email addresses. ZeroBounce also provides an email scoring service and a suite of deliverability tools to further enhance email inbox placement. The company operates a military-grade security infrastructure, ensuring customer data is protected at the highest levels. With more than 23 billion emails validated to date, ZeroBounce serves 400,000+ businesses in 190+ countries and adds up to 200 new clients every day. Companies using email lists validated by ZeroBounce report a 99%+ accuracy rate and maintain a good sending reputation. In 2019, ZeroBounce took no. 851 on the Inc. 5000 list of the fastest-growing private companies in the United States. In 2020, ZeroBounce rose to no. 40 on the list. In 2021, ZeroBounce was number 9 on the Inc. 5000 Regionals list.

Valid Email Checker is a fast, accurate email verification and list-cleaning platform for marketers, agencies, e-commerce and developers who want to cut bounce rates and protect sender reputation. Every address runs through our own 11-stage verification flow — syntax, MX, SMTP handshake, mailbox probe, catch-all, role-account, disposable, spam-trap, full-mailbox and disabled-account checks — returning a clear status plus a 0–100 risk score and deliverability rating. Our standout promise: if a check comes back Unknown, we automatically refund the credit — no ticket, no fine print. Most verifiers charge you for those; we don't, and every refund shows in your credit history. Verify one address in under a second, or bulk-check entire lists with a resumable engine that never times out. Connect 17 native ESP/CRM integrations (Mailchimp, Klaviyo, HubSpot, Brevo and more), plus Make, n8n and Integrately, or our REST API. New accounts start with 150 free credits.