Dilli Email Validator



Add advanced email address validation using Dilli Email Validation API (DEVA). Prevent a site visitor from submitting a form with fake or incorrect email address on your site. No more lost leads due to mis-typed email addresses. No more wasting your precious time reading and responding to spam leads with incorrect email addresses. It hooks into the WordPress core function that is used by most form plugins to validate email address. As a result, it works with most forms.

Learn more about Dilli Email Validation API. This plugin requires an API Key which can be obtained for FREE by signing up here.

Known Compatible Forms

  • WordPress registration
  • Contact Form 7
  • Gravity Forms
  • Ninja Forms
  • Jetpack/Grunion contact forms
  • Any other forms that uses is_email($email) WordPress core function to validate email address field.

Available Languages

  • English
  • German (Deutsche)


  • Validates email address format. Ex: email address is invalid because of missing @
  • Checks for existence of MX records of the email address domain. Ex: [email protected] is invalid because no MX records exist for domain
  • Checks for Disposable/Temporary email addresses. Ex: [email protected] is invalid because provides temporary shared temporary email inboxes.
  • Checks for conformity with ESP (Email Service Provider) grammar rules. Ex: [email protected] is invalid because Yahoo does not allow user part (bob in this case) to be less than 4 characters.
  • Checks for profanity in user part of email address. Ex: f***[email protected] is invalid.
  • Checks user and domain parts of an email address for known malicious patterns. Ex: [email protected], [email protected], [email protected] and [email protected] will be treated as invalid.
  • Checks email address domain against a known blacklist.
  • Checks email address against a known blacklist of frequently used email addresses for spam.
  • Checks for reserved domains. Ex: is a reserved domain. Therefore, [email protected] is not allowed.
  • Checks for Role-based email addresses. Ex: [email protected] will be treated as invalid.
  • Checks for safe domains. Restricts emails whose domains represents sites with adult content.
  • Add custom blocklist. You may request certain domains, emails and users to be blocked.



  1. Unzip and upload the dilli-email-validator folder to the /wp-content/plugins/ directory.
  2. Activate the Dilli Email Validator plugin through the Plugins page in WordPress.
  3. Configure the plugin by going to Settings > Email Validation page.
  4. Get API Key by signing up with Dilli Email Validation API.
  5. Paste your API key in WP-ADMIN at Settings > Email Validation page, verify it and then Save changes.


Register instantly for FREE with Dilli Email Validation API to receive your API key

Yes, you may track it here. The dashboard URL is also accessible from within the WordPress dashboard on Settings->Email Validation page.





Yes, if you have Elementor Pro.



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