Can I check a whole list?

Yes, in a free workspace. Upload a CSV or XLSX up to 5 MB and 200,000 rows. The API takes 2,000 to 10,000 addresses per request.

What happens to what I enter?

Results aren’t saved to an account, and query data is deleted within 24 hours.

What does the SMTP status code mean?

The code the receiving mail server returned for the address. 250 means the server accepted the address.

What is a business mailbox?

An address on a company’s own domain. sub_status returns ["corporate"] for one, and the verifier labels the address Business mailbox.

Can I verify addresses on a signup form?

Not one at a time. score.email.validation takes 2,000 to 10,000 addresses per request, so check signups in batches.

Free Tools

Verify an Email Address Before You Send

Enter an address to check the domain, the MX record and whether the mailbox accepts mail. The SMTP status code behind the answer comes back too.

Your first $5 of validations are on us, valid for 30 days. No card required.

Email verifier

Enter an address and run a free check.

For business use. Contacts you submit should be ones you are entitled to contact. · Terms · Data & opt-out

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Frequently Asked Questions

Five a day on each tool, with no account. Free checks reset at 00:00 UTC. Sign up and your first $5 of validations are on us, valid for 30 days. No card required.

Verify a Whole List Before You Send

Upload a file in a free workspace, or walk through your use case with our team.

The full email response on the Email Validation page. · All free tools

Verify an Email Address Before You Send

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Frequently Asked Questions

Verify a Whole List Before You Send