WPForms
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5M+ installs 4.8★ (14,369)
Dilli Email Validator
Validates email addresses in real-time and blocks form submissions with invalid or fake emails. Reduce spam, fix typos, and capture quality leads.
The facts
- Rating
- 4.7★ from 15
- Active installs
- 90+
- Price
- Free
- Last updated
- 23 Dec 2025
- Added
- Mar 2018
- Requires WP
- 3.6.0
- Tested up to
- WP 6.9.7
- Requires PHP
- 7.4
- Downloads
- 8,288
Our analysis
AI-assistedDilli Email Validator is a WordPress plugin that integrates with the Dilli Email Validation API to enhance email address validation during form submissions. It aims to block fake or incorrectly formatted email addresses, thereby improving lead quality and reducing spam. The plugin works seamlessly with popular form builders and requires no modifications to existing forms.
Key features include validating email format, checking for MX records, identifying disposable email addresses, and assessing compliance with email service provider rules. It also checks for profanity, malicious patterns, and role-based email addresses, as well as allowing for custom blocklists.
Best for: This plugin is suitable for websites that rely on form submissions and want to ensure high-quality email leads.
What it does well
- ✓Integrates with Dilli Email Validation API
- ✓Works with popular form builders like Contact Form 7 and WPForms
- ✓Validates email format and checks for MX records
- ✓Identifies disposable and temporary email addresses
- ✓Allows for custom blocklists
Where it falls short
- •Requires an API key for functionality
- •Limited information on support and updates
Verdict
Dilli Email Validator offers robust email validation features that can help reduce spam and improve lead quality. It is particularly useful for sites with high form submission traffic.
From the developer
dillilabs's own description of Dilli Email Validator, lightly tidied.
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.comis invalid because of missing ‘@’ - Checks for existence of MX records of the email address domain. Ex:
foobar@dlfkdlfkf.cois invalid because no MX records exist for domain dlfkdlfkf.co. - Checks for Disposable/Temporary email addresses. Ex: user@mailinator.com is invalid because mailinator.com provides temporary shared temporary email inboxes.
- Checks for conformity with ESP (Email Service Provider) grammar rules. Ex:
bob@yahoo.comis invalid because Yahoo does not allow user part (bobin this case) to be less than 4 characters. - Checks for profanity in user part of email address. Ex:
f***you@gmail.comis invalid. - Checks user and domain parts of an email address for known malicious patterns. Ex:
jondoe@gmail.com,foobar@yahoo.com,idontwanttogive@gmail.comandnoemail@gmail.comwill 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, validemail@example.com is not allowed.
- Checks for Role-based email addresses. Ex: info@someorganization.com 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)
Tagged as
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