This form demonstrates the email address validator function provided by Mailgun. The submitted data is posted to the Mailgun API and in return the response shows if the entered email address is valid or not. If an email address is not valid, the API system returns possible matches using domain names which are used by popular email services.

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You will notice a warning if you enter non-valid characters, this validation is happens because I'm using Bootstrap and a form field from the type "email".

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