Ikbear

BillionVerify Email Validator checks email addresses in real time as your forms are submitted, stopping fake, mistyped, disposable and undeliverable emails before they reach your database. Cleaner signups mean fewer bounces, less spam and healthier email campaigns.
The plugin verifies each address against the BillionVerify API — performing syntax, MX and SMTP mailbox checks — and rejects the submission when the address matches a status you have chosen to block.
Key features
<ul>
<li>Real-time verification during form submission (no front-end changes required).</li>
<li>Detects valid, invalid, disposable, catch-all, role and risky addresses.</li>
<li>Choose exactly which statuses block a submission — invalid only by default.</li>
<li>Custom error message shown to visitors.</li>
<li>Built-in connection test and single-email test tool in the admin.</li>
<li>Result caching to save credits on repeated addresses.</li>
<li>Fail-open by default: if the API is unreachable or credits run out, forms keep working.</li>
</ul>
Supported forms
<ul>
<li>Default WordPress registration form (including multisite signup)</li>
<li>WordPress comment form</li>
<li>WordPress lost-password form</li>
<li>WooCommerce checkout and account registration</li>
<li>Contact Form 7</li>
<li>WPForms</li>
<li>Gravity Forms</li>
<li>Elementor Pro Forms</li>
<li>Fluent Forms</li>
</ul>
<h3>Third-Party Service Usage</h3>
This plugin sends email addresses to the BillionVerify API (https://billionverify.com/) for verification. Through API calls to BillionVerify servers it verifies email addresses and retrieves account credit information, using the following endpoints:
<ul>
<li>Verify an email address: https://api.billionverify.com/v1/verify/single</li>
<li>Retrieve credit balance: https://api.billionverify.com/v1/credits</li>
</ul>
By installing and activating this plugin, you consent to the transmission of submitted email addresses to these URLs for the purpose of verification. Use of the BillionVerify service is subject to BillionVerify’s Terms of Service (https://billionverify.com/terms) and Privacy Policy (https://billionverify.com/privacy).

BillionVerify Email Validator

Real-time email verification for your WordPress forms. Block invalid, disposable, catch-all and role addresses using the BillionVerify API.

Fresent

FilterBounce Email Verifier is your shield against invalid emails. It integrates seamlessly with popular WordPress forms. Say goodbye to spam registrations and hello to cleaner email lists!
Key Features: 
– Real-time email verification. 
– Form validation for emails. 
– Detects invalid, temporary, spamtrap, disposable, role and catch-all addresses 
– All email providers for business/professional emails supported. 
– Works with most WordPress forms. 
– GDPR compliant.
Supported WordPress Forms: 
– WPForms 
– HappyForms 
– Ninja Forms 
– Fluent Forms 
– Gravity Form 
– Mail Mint Form 
– Contact Form 7 
– Elementor Forms 
– Forminator Forms 
– Formiddable Form 
– WordPress Comment Form 
– WooCommerce Checkout Form 
– Contact Form by BestWebSoft 
– Default WordPress Registration Form 
– Support for more forms will be added
Please visit https://filterbounce.com/ for detailed list of features and support.
<h3>Third-Party Service Usage</h3>
This plugin uses the Filter Bounce’s API service (https://filterbounce.com) to verify emails. 
API calls are made to Filter Bounce’s servers, to verify email addresses using the below endpoint.
<pre><code>API Endpoint: https://filterbounce.com/api/v1/
</code></pre>
By installing and activating this plugin, you are providing consent to the transmission of email addresses to above URLs for the email verication purpose.
We’re committed to your privacy as:
<ul>
<li>Emails are deleted after 15 days</li>
<li>We never use emails for marketing</li>
<li>All data is encrypted</li>
</ul>
The use of the FilterBounce Email Verifier service is subject to Fresent’s Terms of Service and Privacy Policy, available at:
<pre><code>Terms of Service: https://fresent.com/terms/
Privacy Policy: https://fresent.com/privacy/
</code></pre>
We encourage you to review above terms to understand how Filter Bounce handles and protects your data.

FilterBounce Email Verifier

Verifies email addresses in real-time during form submissions to prevent invalid, disposable, temporary, catch-all, free or spamtrap email addresses.

BillionVerify Email Validator vs FilterBounce Email Verifier