Is this email valid?

Check an address and understand the result. The demo allows a few free checks per day.

What each email verdict means

Deliverable

The mail server accepted the recipient during the check. SMTP acceptance is a signal, not a delivery or inbox placement guarantee.

Risky

The address needs caution. A catch-all domain may accept recipients that do not have a mailbox, so an individual inbox cannot be confirmed. Learn about catch-all results.

Invalid

The checks indicate that the address cannot receive mail. Review the spelling and confirm the address with the contact before using it.

Unknown

The checks did not return an answer. Timeouts, temporary deferrals or blocked connections can prevent a conclusion. Try again later or confirm the address through an existing channel.

What is checked?

The verifier checks syntax, domain mail records, SMTP responses and catch-all signals where available. A valid-looking address or a published MX record alone cannot prove that the inbox exists.

You can also look up a domain’s MX, SPF and DMARC records. Email verification does not establish consent to contact someone.

Free demo limits

You can run a few free checks per day. If you reach the demo limit, the widget will say so. Sign in to use your CheckMX workspace.