zerobounce

<p>Need an email validation tool to block invalid and high-risk emails on your WordPress website?</p>
<p>The ZeroBounce email verification plugin assists users by validating email addresses entered into your registration forms, comments sections, eCommerce shops, and more. Install the plugin, connect your API key, and select the forms you want to monitor with email validation.</p>
<h3>Key Features</h3>
<ul>
<li><strong>Automated real-time email validation</strong> – Automatically prevent selected email types from creating accounts, leaving comments, or signing up</li>
<li><strong>Detect more than 30+ email address types</strong> – Including invalid, abuse, disposable, spam trap, toxic domains, catch-all, and more</li>
<li><strong>Choose what to accept</strong> – Create your own rules for email validation and disallow emails based on status</li>
<li><strong>Email verification for 9 form types</strong> – Easily select which forms you want to protect with email validation</li>
<li><strong>Fast manual email validation</strong> – Verify any email address in the tools section using our interactive form</li>
<li><strong>Email validation API logs</strong> – Keep track of monthly email verifications, including status, sub-status, IP, date, and credits used</li>
</ul>
<h3>Benefits</h3>
<ul>
<li><strong>Keep your email list clean & accurate</strong></li>
<li><strong>Reduce your email bounce rate</strong></li>
<li><strong>Boost your inbox placement</strong></li>
<li><strong>Protect your email sender reputation</strong></li>
<li><strong>Improve email deliverability</strong></li>
<li><strong>Eliminate fraudulent, untrustworthy shoppers</strong></li>
<li><strong>Block spammers and spoofers</strong></li>
<li><strong>Keep your comments section clean</strong></li>
</ul>
<h3>Supported Forms/Plugins</h3>
<ul>
<li>Contact Form 7</li>
<li>WPForms</li>
<li>Ninja Forms</li>
<li>Formidable Forms</li>
<li>WooCommerce</li>
<li>WordPress Post Comments</li>
<li>WordPress Registration</li>
<li>MC4WP: Mailchimp for WordPress</li>
<li>Gravity Forms</li>
<li>Fluent Forms</li>
<li>WS Forms</li>
<li>Mailster Forms</li>
<li>Forminator Forms</li>
</ul>
<p>And more support is being added gradually.</p>


ZeroBounce Email Verification & Validation


I have tested this plugin on several of my personal and business websites, it's awesome. No more spam and fake signups. Service pricing is also decent. Recommended.


Excellent in blocking SPAM


You have a problem with NF form validation. It detects html fields that contains emails (eg mailto links) as email fields and validates those.



if (!empty($value) && is_string($value) && preg_match('/@.+\./', $value) && !str_contains($value, "\n") && !str_contains($value, '\n')) {// rest of the code}



Your approach needs to be changed to:



if (!empty($value) && is_string($value) && preg_match('/@.+\./', $value) && !preg_match('/mailto:/i', $value)) {  $ninjaForm = new Zerobounce_Email_Validator_Form_Public('ninjaforms', $form_data['id']);   // rest of the code}



This should be safer to validate only email addresses (or use a better regex).


Ninja Forms problem

ZeroBounce validates emails on your WordPress site in real-time, blocking invalid and risky emails to improve deliverability and reduce bounce rates.

WebBuddy

<p>Automatic Email Testing for WP is an efficient solution to help you automatically check whether your website’s email sending is working as expected every single day.</p>
<p>Email sending is one of the most fundamental functionalities of your website. When your website is unable to send out emails, contact form enquiries fail to reach you, order emails fail to reach your customers, and the list just goes on.</p>
<p>By using Automatic Email Testing for WP plugin on your website, you will have a smart system that helps you to test your website email server automatically every day, so you can have the assurance that your website’s email sending functionality is working well, day in and out!</p>
<p>The setup process is incredibly quick and simple. All you need is to enter your email address (one-time) and you’re good to go!</p>
<p>The plugin will send the first test email to you immediately once your email address has been saved. Subsequently, it will automatically run tests on your website email server and you should receive a simple email testing report every 24 hours (approx.) if your website email server is working normally.</p>
<p>In the event that you do not receive the daily email testing report on any given day, it means that your website email server is down and you may refer to the plugin settings page for a quick guide on how to troubleshoot the issue.</p>
<h4>FREE VERSION FEATURES INCLUDE:</h4>
<ul>
<li>Automated daily checks on your website email server</li>
<li>Simple email testing report sent to you daily (if email server is working normally only)</li>
<li>Email test record log (for past 3 days)</li>
<li>Ultra-lightweight plugin (will not slow down your website)</li>
<li>Step by step troubleshooting guide available for reference if you do not receive the email testing report</li>
</ul>
<p>If you have any feedback or suggestions to add more features to this plugin, we welcome you to get in touch with us 🙂</p>
<p>Note: This plugin will test whether the email is sent successfully but it does not guarantee the deliverability of emails.</p>
<h4>PRO VERSION</h4>
<p>If you want to be automatically notified even when your email server fails, check out our <a href="https://payhip.com/b/L4KeS" rel="nofollow ugc">PRO version here</a>.</p>
<h4>PRO VERSION FEATURES INCLUDE:</h4>
<ul>
<li>Automated daily checks on your website email server</li>
<li>Simple email testing report sent to you daily (you will be notified even when your email server fails!)</li>
<li>Email test record log (for past 10 days)</li>
<li>Ultra-lightweight plugin (will not slow down your website)</li>
</ul>


Automatic Email Testing for WP

[UPDATED!] Automatic Email Testing for WP plugin allows you to set up a system inside wordpress to test your email server every day.

ZeroBounce Email Verification & Validation vs Automatic Email Testing for WP