Email Address Verification Checker

Check if an email address is valid or not with Mailgun's fast and simple email verification tool. Using our data from sending billions of emails every month, we have the fastest and most accurate set of email verification data available.

How to Do Email Address Verification

A bad email address is a lost customer. Don't let typos clog up your email list with invalid email addresses. Use email checking tools to ensure you're capturing every customer along the way.

Using Mailgun's email validation service, you can check a single email address at a time, upload a CSV of emails for us to validate in bulk, or use our super-fast email verification API. Our email checker goes beyond real-time analysis and looks at if that email address was recently deliverable across the entire Mailgun ecosystem. Should there be a syntax error or suspicious domain name - our verifications service will catch it.

Email verifications are included with our Foundation plan. View our pricing plans to get more information, sign up, and start checking your emails today.

Bulk Email Validations

Verify your email list before sending bulk email

Bad email addresses can negatively impact your email deliverability as inbox providers see you're not following best practices. Sending to bad emails can lead to an increase in hard bounces, which will negatively affect your sender reputation. It's simple to clean your list with an email verification service like Mailgun.

Mailgun's verification tool can lower your bounce rate by up to 20%. We use our cache of sending data, combined with other signals by doing SMTP lookups with certain email providers like Google's Gmail, AOL, Yahoo, and others to determine if an address is mailable or not.

Inbox providers like Gmail can have their own custom grammar rules. We integrated custom grammar checks for Gmail, Yahoo, Hotmail, and many more into our email checker. When new rules are discovered we add those too, so you can rest assured all your bases are covered.

Supercharge your email marketing campaigns with Mailgun's powerful email verification tool.

Why Choose Mailgun?

Mailgun processes billions of emails every month. This gives us a powerful dataset that other providers just don't have. If your email verification provider doesn't actually send email, how do they really know if an address is valid or not? Mailgun has cached nearly every available email address today, and we'll continue to grow our accuracy as our customer base grows.

Don't get locked into a provider with a bad data set. Trust Mailgun to help verify your email lists, send bulk email, and monitor your domain reputation.

Start Validating Now

How often should you check your email list?

25% of your email database will go bad every year, which is why it's important to run a full verification on your entire email list on a yearly basis at the minimum. Email is still the best way to directly reach your customers.

If you need help with your overall email deliverability strategy – Mailgun can help. Our email experts have partnered with leading companies like Lyft, Shopify, and Dell to help improve their email performance with an industry-leading email service.

Learn more about Mailgun's Email Deliverability Services.


Fastest bulk email verification in the industry

Because our email verification tool uses our cache as it's primary source, the response time is lightning fast. It's so fast you can call our service on your signup, checkout, or form submission page to make sure you're capturing accurate results before users enter your system.

Need a bulk email verifier for millions of emails? You can expect results from us in minutes, not days.

Our proprietary verification process does the following checks:

  • email server & mx record verification
  • roll-based address verification
  • disposable email address verification
  • RFC grammar rule check
  • Suggestions on suspected typos

Try Mailgun's Email Verification Service today.

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