An easy-to-use SaaS application that allows you to quickly verify mailing lists. Upload your list, we verify, you download clean results. Simple as that.
How ClearBounce cleans a list before you send — 41 seconds.
Three simple steps to clean email lists
Upload CSV, Excel, or copy-paste your email list. We support files up to 10MB.
Our proprietary engine runs deep checks — from DNS and SMTP probing to pattern analysis and spam trap detection.
Get your verified list with detailed reports. Export as CSV with all verification data.
Every email is analyzed by our AI-powered verification engine — layer by layer
The address has to follow the rules of email before anything else runs
The domain must exist and point to real mail servers
Gateways like Mimecast or Proofpoint are recognised, and the check adapts to what sits behind them
A real conversation with the receiving server confirms the mailbox exists
Temporary email services and inactive parked domains are flagged
Gmail, Microsoft 365, Yahoo and iCloud each get logic built for how they actually respond
Domains that accept every address are identified and risk-scored instead of trusted
Known traps that poison sender reputation never make it to your clean list
Plus role-account detection, typo rescue and AI pattern & risk scoring on every result.
Four clear answers — and exactly what to do with each
The mailbox exists and accepts mail, confirmed by a real conversation with the receiving server. Safe to send.
The address works, but something lowers confidence — a catch-all domain, a full mailbox, a temporary-looking setup. Send selectively.
The mailbox doesn't exist or the domain can't receive mail. Remove — every send is a guaranteed bounce.
The receiving server wouldn't give a definitive answer in time. Fewer than 2% of results. Re-verify later or treat as risky.
A high bounce rate tells mailbox providers you don't know your own list — and that reputation sticks to your domain long after the campaign ends.
Cleaning invalid addresses before a send improves placement for everyone left on the list — the same message, delivered where it gets read.
Most email platforms bill by contact count. Every invalid address you carry costs you money each month and skews every metric you report.
Start with 100 free credits. No credit card required.
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