About this plugin
This plugin integrates with the Dilli Email Validation API (DEVA) to block fake or incorrectly formatted email addresses at form submission, ensuring higher-quality leads and significantly reducing spam.
This plugin requires an API Key which can be obtained for FREE by signing up here. Learn more about Dilli Email Validation API here.
This plugin hooks directly into the WordPress core email validation function ( is_email() ), which is used by most major form plugins. That means it works out of the box with popular form builders like:
- Contact Form 7
- WPForms
- Gravity Forms
- Ninja Forms
- Jetpack/Grunion contact forms
- WordPress registration forms
- and many others.
No need to modify your forms — just install and activate the plugin.
Features
- Validates email address format. Ex: email address fooAtdillilabs.com 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 dlfkdlfkf.co.
- Checks for Disposable/Temporary email addresses. Ex: [email protected] is invalid because mailinator.com 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: example.com 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.
- Checks for non-business email address. Ex: *@gmail.com, *@yahoo.com, *@hotmail.com email addresses will be treated as invalid.
- Checks the IP address of the user submitting the form against a known list of malicious IP addresses.
- Add custom blocklist. You may request certain domains, emails and users to be blocked.
Available Languages
- English
- German (Deutsche)