Real-Time Email Validation API

With Mailgun email validation, you won’t waste your budget on email addresses that don’t exist.

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  • Github
  • Lyft
  • Shopify
  • WP Engine
  • Reddit

The Mailgun Advantage

Verify emails with someone whose business is sending email. With more than 11 billion emails sent every month, we’ve hashed the majority of active email addresses. We know what’s deliverable and what’s not.

Plus, by using Mailgun’s validations alongside our sending and other deliverability tools, you don’t have to worry about the time and effort necessary to integrate different products.

Validation based on billions of sent emails

RFC states the formal rules for email addresses. However, in the real world ESPs accept addresses that are not RFC-valid, and reject addresses that are.

When we built our validator, we did based on real-world data + RFC spec to ensure more accurate validation.


Custom ESP grammar

All major ESPs have their own set up custom grammar that impact whether an email address is valid in the real world.

We’ve integrated custom grammar checks for Gmail, Hotmail, and Yahoo into our email validator and are always adding more custom grammar checks as we discover these rules.

Email Form Validations
Protect Your List From Typos

“Did you mean”

People make typos all the time. can easily become and when it does, you can miss out on connecting with that customer.

That’s why we built in a suggestion service into our email validation service. When we have a suggestion for a common typos, we’ll return it along with invalid status, so you can offer the suggestion to your user.

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