Email Verifier

Verify email address validity with the most complete email checker.

Enter an email address to verify its validity.

Accurate and fast email checker.

We designed the Email Verifier to be as complete as possible, with validations made at multiple levels: format, domain information, the response of the mail servers and comparison with our unique base of professional email addresses.
Get 50 free verifications/month

Verify email addresses in bulk

You can also check a list of email addresses. Upload your file and watch it being enriched with full email verifications.

Bulk Email Verifier

Email Verifier API

The primary services of Hunter are also available through our API. Get the complete check result of any email address with a simple API call.

Email Verifier API
Hunter is used by 3,000,000+ professionals and chosen by leading companies.

Common questions about the Email Verifier

What is the purpose of an email verifier?

An email verifier, or email checker, is a tool to validate that an email address exists and can receive emails. Verifying is important before contacting new recipients to avoid bounces and protect your sender's reputation.

Hunter's Email Verifier does a complete check of email addresses, verifies if it appears publicly on the web and returns the sources.

Does it send an email to validate an email address?

The Email Verifier directly connects to the SMTP server without sending an email.

What does the Email Verifier check?

This is the list of validations the Email Verifier performs:

  • Valid format: First, we validate the format of the email address is correct and looks something like
  • Gibberish Email Address: We check to ensure the address doesn't look like a random email address. For example, doesn't pass the test.
  • Disposable Email Address: We check if the email address has a domain name used for temporary email addresses.
  • Webmail Email Addresses: We verify if the email address uses a webmail like Gmail or Yahoo.
  • Presence of MX Records: We check if there are MX records on the domain. If there aren't, the email address can't receive emails.
  • Presence of SMTP Server: This check is successful if we are able to connect to the SMTP server (indicated in MX records).
  • SMTP Check: We test the email address and see if it bounces or not, without sending an email.
  • Accept-all Domain: We check if the server has a catch-all policy that accepts all the email addresses.

Can a Valid email address bounce?

The email addresses recently verified and marked Valid are safe to use. We usually observe a bounce rate lower than 1% for these email addresses.

What does it mean when an email address is marked Accept all?

When you perform an Email Verification, the result might be Accept all. Some email servers accept all the email addresses on the same domain name, whether they have actually been created or not. In similar cases, the Email Verifier can't confirm if the tested email address actually exists and returns the Accept all status.

These email addresses are less safe to use than the email addresses with the Valid status. To decide whether to use them, you need to evaluate the level of risk you're willing to take.

For moderate risk, we recommend selecting only the highest-quality email addresses by using the confidence score returned by the Email Verifier. For example, you can keep only email addresses with score higher than 80%.

Can I validate a list of email addresses?

Yes, you can verify a list of professional email addresses with the Bulk Email Verifier.

Is the Email Verifier free?

When logged in, one verification costs one credit, except when we fail to verify the email address.

With a free account, you can validate up to 50 email addresses per month. If you need more, please check the pricing for more information.

Where the Email Verifier can be used

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