Clean lists. Better deliverability. Honest results.
Prime Verifier helps marketers and developers keep their email lists clean, so messages reach real inboxes and sender reputation stays healthy. We built the platform we wished existed: accurate, fast, and refreshingly honest about what it knows.
One platform for every email check
We verify email addresses through layered validation: syntax checks, MX and domain analysis, disposable- and role-address detection, and real mailbox verification, then combine them into a clear result and a risk score you can act on.
From a single lookup in your signup flow to bulk cleaning lists of millions and a developer API, everything runs on the same engine and the same dedicated sending fleet, so the result is consistent no matter how you reach it.
Honest results
When we can't be sure, we say "unknown", and we don't charge for it. No inflated accuracy, no guessing on your dime.
Built to scale
A dedicated sending fleet with reputation-aware pacing, so accuracy holds up from a few hundred addresses to millions.
Developer-first
A clean REST API, idempotent retries, webhooks, and streaming bulk, built to drop straight into your stack.
Real mailbox verification
We go past syntax, checking domains, mailboxes, catch-all behaviour, and disposables against the live mail server.
99.6%
Verification accuracy
15+
Providers verified
Real-time
Single-check speed
See why teams trust their lists to us
Start free, no credit card needed, or reach out and we'll help you find the right fit for your volume.