Jesin A

<p>Most email validators look for an <code>@</code> and a <code>.</code>(dot) some go further and blacklist certain domain names. But Mailgun’s Advanced email validation service goes deeper and looks for the existence of the domain name, presence of a <a href="http://en.wikipedia.org/wiki/MX_record" rel="nofollow ugc">MX record</a> and the custom ESP(Email Service Provider) grammar.<br />
The grammar here is the rules defined by each email provider. For example, Yahoo Mail addresses can only contain letters, numbers, underscores, and one period.<br />
So <code>user.name.abc@yahoo.com</code> perfectly passes the <a href="https://codex.wordpress.org/Function_Reference/is_email" rel="nofollow ugc">is_email()</a> function but can never exist as it contains more than one period. Such addresses can’t escape Mailgun’s Email validation.</p>
<h4>Why use Mailgun’s email validation service?</h4>
<ul>
<li>Performs the usual email syntax check.</li>
<li>Checks the existence of the email domain. So <code>user@some-random-characters.com</code> can’t escape.</li>
<li>Checks if the email domain has a MX record. So <code>anything@example.com</code> is caught.</li>
<li>Checks if the username complies with the grammar of its ESP (Email Service provider). Eg Gmail doesn’t allow usernames less than 6 characters and hyphens so <code>small@gmail.com</code> and <code>hyphen-user@gmail.com</code> can’t get away.</li>
</ul>
<h4>Why use this plugin?</h4>
<ul>
<li>Integrates with the <a href="https://codex.wordpress.org/Function_Reference/is_email" rel="nofollow ugc">is_email()</a> function of WordPress. So it works seamlessly with Contact Form 7, Jetpack/Grunion contact forms, WordPress registration form and any form which uses the <code>is_email()</code> function.</li>
<li>Kicks spam before it is inserted into the database</li>
<li>Ensures that the commenting process is uninterrupted even if Mailgun suffers a <a href="http://status.mailgun.com" rel="nofollow ugc">downtime</a></li>
<li>Works completely transparent, nothing changes in the frontend</li>
</ul>
<p>This plugin requires a Mailgun Public API Key which can be obtained by <a href="https://mailgun.com/signup" rel="nofollow ugc">signing up at Mailgun</a>.</p>
<p>If you’re trying out this plugin on a local WAMP/LAMP/MAMP installation make sure your system is connected to the Internet for this plugin to contact Mailgun.</p>
<h4>Available Languages</h4>
<ul>
<li>English</li>
<li>Serbo-Croatian by <a href="http://www.webhostinghub.com/" rel="nofollow ugc">Borisa Djuraskovic</a></li>
<li>Spanish by <a href="http://www.webhostinghub.com/" rel="nofollow ugc">Andrew Kurtis</a></li>
</ul>
<h4>Further Reading</h4>
<p>Read about Mailgun’s email validation service.</p>
<ul>
<li><a href="http://blog.mailgun.com/post/free-email-validation-api-for-web-forms/" rel="nofollow ugc">http://blog.mailgun.com/post/free-email-validation-api-for-web-forms/</a></li>
<li><a href="http://blog.mailgun.com/post/weekly-product-update-improvements-to-email-validation-api/" rel="nofollow ugc">http://blog.mailgun.com/post/weekly-product-update-improvements-to-email-validation-api/</a></li>
<li><a href="http://mailgun.github.io/validator-demo/" rel="nofollow ugc">Mailgun Address Validator demo</a> and its <a href="https://github.com/mailgun/validator-demo/tree/gh-pages" rel="nofollow ugc">source code</a></li>
<li>The <a href="https://websistent.com/wordpress-plugins/mailgun-email-validator/" rel="nofollow ugc">Mailgun Email Validator Plugin</a> official homepage.</li>
</ul>


Mailgun Email Validator

Implementing this plugin is straight forward and simple.

Works perfectly

Kick spam with a highly advanced email validation in comment forms, user registration and contact forms using Mailgun's Email validation service.

debounce

<h3>🚀 Transform Your Email Quality with AI-Powered Validation</h3>
<p>Tired of fake emails, spam traps, and disposable addresses cluttering your database? DeBounce Email Validator is the ultimate solution for WordPress websites that demand real, deliverable email addresses.</p>
<h3>Why Choose DeBounce?</h3>
<ul>
<li><strong>99.9% Accuracy Rate</strong> – Industry-leading validation precision  </li>
<li><strong>Zero IP Impact</strong> – No emails sent, no blacklisting risk  </li>
<li><strong>GDPR Compliant</strong> – Complete privacy protection  </li>
<li><strong>Real-time Validation</strong> – Instant feedback for users  </li>
<li><strong>Advanced AI Detection</strong> – Catches sophisticated spam attempts</li>
</ul>
<h3>Perfect For</h3>
<ul>
<li>E-commerce stores (WooCommerce)  </li>
<li>Lead generation forms  </li>
<li>User registration systems  </li>
<li>Contact forms  </li>
<li>Newsletter signups  </li>
<li>Any WordPress form  </li>
</ul>
<p>Install, connect your API key, and watch your email quality soar while reducing spam and improving conversion rates.</p>
<h3>Supported Forms and Plugins</h3>
<p><strong>🛒 E-COMMERCE & BUSINESS FORMS</strong></p>
<ul>
<li>WooCommerce – Validate shipping and billing emails  </li>
<li>Gravity Forms – Enterprise-grade form validation  </li>
<li>Contact Form 7 – Most popular contact form plugin  </li>
<li>WPForms – Drag & drop form builder  </li>
</ul>
<p><strong>🏗️ ADVANCED FORM BUILDERS</strong></p>
<ul>
<li>Ninja Forms – Professional form creation  </li>
<li>Formidable Forms – Complex form solutions  </li>
<li>Forminator – Modern form builder  </li>
<li>Fluent Forms – Advanced form management  </li>
<li>Elementor Forms – Page builder integration  </li>
<li>WSForms – Premium form builder  </li>
</ul>
<p><strong>⚙️ WORDPRESS CORE FEATURES</strong></p>
<ul>
<li>WordPress Comments – Validate commenter emails  </li>
<li>User Registration – Ensure valid signup emails  </li>
<li>Jetpack Forms – Automattic’s form solution  </li>
</ul>
<p><strong>🔧 CUSTOM INTEGRATION</strong></p>
<ul>
<li>Any Custom Form – Works with <code>is_email()</code> function  </li>
<li>Third-party Plugins – Automatic compatibility  </li>
<li>API Integration – Direct API access available</li>
</ul>
<h3>Key Features</h3>
<p><strong>🔍 CORE VALIDATION CHECKS</strong></p>
<ul>
<li>DNS & MX Record Validation – Verify domain authenticity  </li>
<li>Syntax Verification – IETF/RFC standard compliance  </li>
<li>Mailbox Existence – Confirm email actually exists  </li>
<li>SMTP Connection Testing – Real server verification  </li>
</ul>
<p><strong>🛡️ SECURITY & SPAM PROTECTION</strong></p>
<ul>
<li>Disposable Email Detection – Block temporary email services  </li>
<li>Spam Trap Identification – Prevent honeypot emails  </li>
<li>Typosquatting Prevention – Catch misspelled domains  </li>
<li>Role-based Email Filtering – Block info@, admin@, etc.  </li>
<li>Custom Blocklist – Your own domain/email restrictions  </li>
</ul>
<p><strong>⚡ PERFORMANCE & RELIABILITY</strong></p>
<ul>
<li>Real-time Validation – Instant user feedback  </li>
<li>Temporary Unavailability Detection – Handle server issues  </li>
<li>Catch-All Domain Testing – Identify low-quality domains  </li>
<li>Greylisting Detection – Advanced spam protection  </li>
<li>99.9% Accuracy Rate – Industry-leading precision  </li>
</ul>
<p><strong>🔒 PRIVACY & COMPLIANCE</strong></p>
<ul>
<li>GDPR Compliant – No email storage  </li>
<li>Zero IP Impact – No emails sent from your servers  </li>
<li>Secure API Communication – Encrypted data transfer  </li>
<li>Privacy-First Design – Your data stays private  </li>
</ul>
<p><strong>📊 ANALYTICS & MONITORING</strong></p>
<ul>
<li>Validation Logs – Track all validation attempts  </li>
<li>Performance Metrics – Monitor validation success rates  </li>
<li>Custom Error Messages – Branded user feedback  </li>
<li>Multi-language Support – Global accessibility  </li>
</ul>
<p><strong>Start with 100 Free Validations</strong> – <a href="https://debounce.io/pricing/" rel="nofollow ugc">Get your API key now</a></p>


DeBounce Email Validator


This plugin is very useful and I have used it on my site. Recently, it has been developed very well and good facilities have been added to it. thank you very much


Greate Plugin

Real-time email validation for WordPress forms. Block invalid, disposable, and risky emails to keep your database clean and improve deliverability.

Mailgun Email Validator vs DeBounce Email Validator