Has anyone tried Mailgun's email address validation service? http://blog.mailgun.com/post/free-email-validation-api-for-web-forms/ http://blog.mailgun.com/post

Has anyone tried Mailgun's email address validation service? http://blog.mailgun.com/post/free-email-validation-api-for-web-forms/ http://blog.mailgun.com/post/free-email-validation-api-for-w...