Rutvik Panchal

<p><strong>Trumailo</strong> verifies every email address submitted to your WordPress site — in real time, with one drop-in plugin — and stops fake, throwaway, mistyped, and risky addresses <em>before</em> they touch your CRM, mailing list, or order pipeline.</p>
<h4>Why bother</h4>
<ul>
<li>Spam signups inflate your list and tank deliverability.</li>
<li>Disposable inboxes (Mailinator, 10MinuteMail, etc.) never convert.</li>
<li>Typo’d emails (<code>gmial.com</code>, <code>yhaoo.com</code>) are lost forever.</li>
<li>Role addresses (<code>admin@</code>, <code>info@</code>) hurt sender reputation.</li>
</ul>
<p>Trumailo catches all of those at the form, with a friendly inline message.</p>
<h4>Works out of the box with</h4>
<ul>
<li>WordPress core (registration, comments, REST users)</li>
<li>WooCommerce (classic checkout, block checkout, registration)</li>
<li>Easy Digital Downloads</li>
<li>Contact Form 7</li>
<li>WPForms</li>
<li>Gravity Forms</li>
<li>Ninja Forms</li>
<li>Fluent Forms</li>
<li>Elementor Pro Forms</li>
<li>Forminator</li>
<li>Formidable Forms</li>
<li>MailPoet</li>
<li>FluentCRM</li>
<li>Mailchimp for WordPress</li>
<li>Newsletter (by Stefano Lissa)</li>
<li>Groundhogg</li>
<li>BuddyPress</li>
<li>Ultimate Member</li>
<li>MemberPress</li>
<li>LearnDash</li>
</ul>
<p>No configuration per integration — add your API key, the plugin detects what’s installed and starts verifying.</p>
<h4>Features</h4>
<ul>
<li><strong>Server-side blocking</strong> — survives JavaScript-disabled bots; the rejection happens during form validation.</li>
<li><strong>Real-time inline validation</strong> — debounced typing check with “did you mean” suggestions and accessible status badges.</li>
<li><strong>Per-status policy</strong> — choose what to block: invalid, disposable, risky, role addresses, or anything below a quality threshold.</li>
<li><strong>Whitelist / blacklist</strong> — skip the API for trusted internal domains; always reject specific bad ones.</li>
<li><strong>Cache</strong> — repeat verifications served instantly from local transients (configurable TTL).</li>
<li><strong>Fail-open by default</strong> — if the API is unreachable, submissions go through (configurable to fail-closed).</li>
<li><strong>Verification log</strong> — opt-in, with optional email-hashing for GDPR compliance and configurable retention.</li>
<li><strong>Dashboard</strong> — counts of allowed, blocked, cached, and per-day trend.</li>
<li><strong>REST endpoint</strong> — for custom front-ends and third-party integrations (<code>/wp-json/trumailo/v1/verify</code>).</li>
<li><strong>Multisite-aware</strong>, <strong>i18n-ready</strong>, <strong>GPL-2.0</strong>.</li>
</ul>
<h4>Getting started</h4>
<ol>
<li>Install and activate the plugin.</li>
<li>Get an API key at https://trumailo.com.</li>
<li>Settings <span aria-hidden="true" class="wp-exclude-emoji">→</span> Trumailo <span aria-hidden="true" class="wp-exclude-emoji">→</span> paste the key.</li>
<li>Done — every supported form on your site is now verifying emails.</li>
</ol>
<h3>External services</h3>
<p>This plugin connects to the Trumailo email-verification API to determine whether each submitted email address is deliverable. The API is provided by Trumailo (https://trumailo.com), the same vendor that publishes this plugin.</p>
<p><strong>What the service is and what it is used for</strong></p>
<p>Trumailo is a real-time email-verification API. It checks an address for syntactically-valid format, MX records, disposable / role / catch-all signals, and (where the recipient mail server cooperates) an SMTP-level deliverability probe. The plugin uses it so your site can reject invalid, disposable, and risky addresses before they enter your forms, lists, or checkout.</p>
<p><strong>What data is sent and when</strong></p>
<ul>
<li>The plugin sends the <strong>email address being verified</strong> to <code>https://api.trumailo.com/v1/verify</code> over HTTPS, together with your API key in the <code>Authorization: Bearer</code> header. This happens every time a supported form is submitted with a value the plugin hasn’t already cached.</li>
<li>The plugin sends a lightweight request to <code>https://api.trumailo.com/v1/account</code> to read the calling key’s remaining monthly credits. This is used to populate the credits gauge on the plugin dashboard and is polled at most every 5 minutes.</li>
<li>No other personal data, form fields, page URLs, or visitor identifiers are transmitted.</li>
<li>Verification results are cached locally in WordPress transients to minimise repeat API calls; you can configure the TTL and toggle full-email vs hashed-email storage in the plugin settings.</li>
</ul>
<p><strong>Service provider, terms, and privacy</strong></p>
<ul>
<li>Service: <strong>Trumailo</strong> — https://trumailo.com</li>
<li>Terms of Service: https://trumailo.com/terms</li>
<li>Privacy Policy: https://trumailo.com/privacy</li>
</ul>
<p>Use of this plugin requires that you (the site owner) agree to Trumailo’s Terms of Service and Privacy Policy linked above. You should disclose Trumailo as a sub-processor in your own site’s privacy notice if you operate in a jurisdiction that requires such disclosure.</p>


Trumailo — Email Verification

Real-time email verification for WordPress. Block invalid, disposable, and risky emails before they enter your forms, lists, or checkout.

Sébastien Dumont

Wysija

<blockquote>
<h4>Minimum Requirements</h4>
<p><a href="https://wordpress.org/plugins/wysija-newsletters/" rel="ugc">MailPoet 2</a><br />
  <a href="https://wordpress.org/plugins/woocommerce/" rel="ugc">WooCommerce v3.0.0 or higher</a><br />
  <a href="https://wordpress.org/download/" rel="ugc">WordPress v4.7 or higher</a></p>
</blockquote>
<p>This integration connects your WooCommerce store with MailPoet 2 so your customers can subscribe to your newsletters as they checkout with their purchase.</p>
<h4>Features</h4>
<ul>
<li>If you have more than one newsletter list, customers can select which list to subscribe to when making a purchase.</li>
<li>Double Opt-in.</li>
<li>Decide if the checkbox/s to subscribe is checked or un-checked.</li>
<li>Place the subscription fields on the checkout page where you want them to be.</li>
<li>Custom checkbox label.</li>
</ul>
<h4>Translation Support</h4>
<p>MailPoet Checkout Subscription for WooCommerce (Legacy) is in need of translations. Is the plugin not translated in your language or do you spot errors with the current translations? Helping out is easy! Click on “<a href="https://translate.wordpress.org/projects/wp-plugins/mailpoet-woocommerce-add-on" rel="nofollow ugc">Translate MailPoet Checkout Subscription for WooCommerce (Legacy)</a>” on the side of this page.</p>
<h4>Support</h4>
<p>This plugin will no longer be supported or maintained. I suggest you upgrade <a href="https://sebastiendumont.com/product-category/mailpoet/" rel="nofollow ugc">MailPoet Checkout Subscription for WooCommerce</a> to receive continued support. <a href="https://wordpress.org/plugins/mailpoet/" rel="ugc">MailPoet 3</a> will be required. All previous settings will be carried over.</p>
<blockquote>
<h4>Additional Features</h4>
<ul>
<li>Manage subscription from account dashboard.</li>
<li>Subscription notice added to order email if customers subscribed.</li>
</ul>
</blockquote>
<p><a href="http://eepurl.com/c0hQe9" rel="nofollow ugc">Sign up</a> to be notified of release.</p>
<p><strong>More information</strong></p>
<ul>
<li>Other <a href="https://profiles.wordpress.org/sebd86/" rel="nofollow ugc">WordPress plugins</a> by <a href="https://sebastiendumont.com" rel="nofollow ugc">Sébastien Dumont</a></li>
<li>Contact Sébastien on Twitter: <a href="http://twitter.com/sebd86" rel="nofollow ugc">@sebd86</a></li>
</ul>


MailPoet Checkout Subscription for WooCommerce (Legacy)

Very useful

Unfortunately it doesn't yet work with WooCommerce 3.1
Did some further checks and it works perfectly with WooCommerce 3.1 as well.
Great plugin, does what it promises! Thanks for this!

Works with WooCommerce 3.1 as well

Let your customers subscribe to your newsletters as they checkout with their purchase.

Trumailo — Email Verification vs MailPoet Checkout Subscription for WooCommerce (Legacy)