UserCheck

<p>UserCheck blocks disposable and throwaway email addresses from your sign-up forms. The result: less spam, fewer fake accounts, and a cleaner user base.</p>
<h4>Supported plugins</h4>
<p>If you’re using any of these, UserCheck protects them automatically — nothing to configure:</p>
<ul>
<li>WordPress core (registration, comments, multisite signup, profile email change)</li>
<li>WooCommerce (classic checkout, Cart/Checkout Block, account registration, Edit-account email change)</li>
<li>Profile Builder (free + Pro)</li>
<li>Contact Form 7</li>
<li>WPForms</li>
<li>Elementor Pro Forms</li>
<li>Gravity Forms</li>
<li>Fluent Forms</li>
<li>Ninja Forms</li>
<li>Formidable Forms</li>
<li>MailPoet</li>
</ul>
<h4>Fallback for unsupported plugins</h4>
<p>For plugins without a built-in integration, a fallback check catches sign-ups from any other form on your site. It only runs when someone submits a form, so it won’t slow down your dashboard or background tasks. You can turn it off under Settings <span aria-hidden="true" class="wp-exclude-emoji">→</span> UserCheck <span aria-hidden="true" class="wp-exclude-emoji">→</span> Coverage.</p>
<h4>Choose what to block</h4>
<p>Pick which kinds of email addresses get blocked: domains that can’t receive email, disposable addresses, public providers (Gmail, Yahoo, etc.), forwarding services that hide the real address, and known spammers. Domains on your UserCheck account blocklist are always blocked.</p>
<h4>Lightweight by design</h4>
<p>Emails are checked only when users submit a form (registration, comment, checkout) — never re-checked for existing users or orders. No background scans, no surprises.</p>
<h4>Resilient by design</h4>
<p>If our service is ever down or slow, your site keeps working: sign-ups go through and the error is logged for review. Each request times out after 2 seconds, so an unresponsive API can’t hold up your forms.</p>
<h4>Full email or domain only</h4>
<p>Send the full email (more accurate) or just the domain.</p>
<h4>Extensible</h4>
<p>Developers can plug UserCheck into any plugin’s validation hook by calling <code>UserCheck::instance()->evaluate_email( $email )</code> and acting on the returned <code>action</code>, <code>reason</code>, and <code>message</code>.</p>
<h4>Translation ready</h4>
<p>All text in the plugin can be translated into any language.</p>
<h4>Works out of the box</h4>
<p>No configuration required. A free API key unlocks higher request limits.</p>
<p>Powered by <a href="https://www.usercheck.com" rel="nofollow ugc">UserCheck</a>, which tracks new disposable email providers as they appear so your site’s protection stays current.</p>
<h3>Privacy Policy</h3>
<p>The plugin sends the email address (or just its domain, depending on your settings) to the UserCheck API for validation. The request User-Agent identifies the plugin version, WordPress version, site URL, and which integration triggered the check (e.g. <code>wp_registration</code>, <code>wc_checkout</code>, or <code>fallback_is_email/<plugin-slug></code> when the fallback fires for an unsupported plugin). No other end-user data is sent. For more information on how UserCheck handles data, please visit <a href="https://www.usercheck.com/privacy" rel="nofollow ugc">https://www.usercheck.com/privacy</a>.</p>


Block disposable and throwaway email addresses on your WordPress site.

tempmaildetector

<p>The Temp Mail Detector WordPress Plugin is a privacy-first temporary email prevention plugin which helps stop disposable emails from being able to sign up or comment on your website. With built-in WooCommerce support, you can also protect your store from fraudulent orders and registrations using disposable email addresses.</p>
<p>By combining the ability to use your own custom blocklist alongside the optional Temp Mail Detector database, you can choose which email providers are allowed or not allowed to use your website.</p>
<h3>What’s available</h3>
<p>This plugin offers multiple options:<br />
* <strong>Blocklist</strong> – You can enter your own list of domains to block.<br />
* <strong>Protect comments</strong> – Choose if you would like the plugin to mark comments as spam.<br />
* <strong>Protect WooCommerce</strong> – Block temporary emails during WooCommerce checkout, customer registration, and account updates.<br />
* <strong>Plus emails</strong> – Block emails which have a <code>+</code> in the user part.<br />
* <strong>Multiple dots</strong> – Block emails with multiple dots in the user part (e.g., first.middle.last@example.com).<br />
* <strong>External check</strong> – This makes use of the live Temp Mail Detector database for real-time checks.</p>
<p>To check against the Temp Mail Detector database, you will need to <a href="https://tempmaildetector.com" rel="nofollow ugc">register for a free API key</a>.<br />
Each API key gets 200 lookups each month, which reset on the first of the month.</p>
<h3>Where Temp Mail Detector Protects Your Site</h3>
<p>Temp Mail Detector automatically blocks disposable email addresses in these common situations:</p>
<p><strong>WordPress Protection:</strong><br />
* Someone creates a new user account <span aria-hidden="true" class="wp-exclude-emoji">→</span> Signup is rejected<br />
* Someone leaves a comment <span aria-hidden="true" class="wp-exclude-emoji">→</span> Comments are automatically marked as spam<br />
* A user updates their account email <span aria-hidden="true" class="wp-exclude-emoji">→</span> Changes are blocked</p>
<p><strong>WooCommerce Protection:</strong><br />
* A new customer registers <span aria-hidden="true" class="wp-exclude-emoji">→</span> Account creation is blocked<br />
* A customer makes a purchase <span aria-hidden="true" class="wp-exclude-emoji">→</span> Order is blocked<br />
* A customer updates their account email <span aria-hidden="true" class="wp-exclude-emoji">→</span> Email changes are prevented<br />
* Customers use the checkout form <span aria-hidden="true" class="wp-exclude-emoji">→</span> Checkout is blocked</p>
<h3>External services</h3>
<p>If external checks are enabled via the use of an API key, when checking if an email is temporary or not through the Temp Mail Detector API, only the website address of the email is sent to be analysed. Your users’ email addresses are never transmitted or shared with anyone.</p>
<p>If an email is <code>user@website.com</code>, this plugin will only send <code>website.com</code> to be analysed. By never sharing your users’ emails, you can both check if an email is disposable while also maintaining your users’ privacy.</p>
<h3>Terms of Service / Privacy Policy</h3>
<p>Please make yourselves familiar with our terms of service and privacy policy, which can be found here:</p>
<p><a href="https://tempmaildetector.com/terms-of-service" rel="nofollow ugc">Terms of Service</a></p>
<p><a href="https://tempmaildetector.com/privacy-policy" rel="nofollow ugc">Privacy Policy</a></p>


Temp Mail Detector – Block Temporary Emails

Detect and block temporary emails from registering on your website using the Temp Mail Detector plugin.

UserCheck vs Temp Mail Detector – Block Temporary Emails