Nexiphor Verifier

Email checker

An email checker on NexiphorVerifier is a single SMTP mailbox probe: format and MX first, then RCPT TO against the receiving host. You get a status and a reason code — not a silent pass/fail.

What a check includes

  • Syntax and domain checks before SMTP (Unicode local parts are rejected on live keys).
  • MX lookup, then a mailbox probe. Catch-alls are scored and stay Risky.
  • If the host times out or blocks the probe, the result is Unknown and the credit is refunded.

Try it or call it

The homepage demo runs the same engine on a live check (limited free attempts). For production, use the dashboard single-verify page or POST /api/v1/verify/single.

Outreach framing for a single probe: Check an address before you contact it. Developer integration: Email verification API. API docs.