How an email check works

An email check looks at more than the address format. Verifier reports syntax, domain and mail exchanger records, and mailbox signals where they are available.

The result also includes a quality score, a safe-to-send indicator, and reason codes. Review the reasons before deciding how to use an address. A network or mail server may refuse to confirm whether a mailbox exists, so a result can remain uncertain.

You can check one address in the workspace or upload a CSV in lists. Each workspace has its own results and list history.