DannyCooper

Capture is a powerful WordPress plugin designed to help you build your email list with ease. Whether you’re connecting to external Email Marketing Services (EMS) or storing subscribers locally, Capture provides a seamless solution for collecting and managing email subscriptions.
Key Features:
<ul>
<li>Dual Storage Options: Connect to your favorite Email Marketing Service or store subscribers locally in your WordPress database</li>
<li>Block Editor Support: Native WordPress block for easy form creation and customization</li>
<li>Local Subscriber Management: Built-in admin interface to view, search, and manage subscribers</li>
<li>CSV Export: Export your subscriber list for use in other tools</li>
<li>Privacy Compliant: GDPR-ready with data retention settings and unsubscribe functionality</li>
<li>Customizable Forms: Flexible form styling and layout options</li>
<li>Admin Notifications: Optional email notifications for new subscribers</li>
<li>Search & Filtering: Advanced admin tools to find and manage specific subscribers</li>
</ul>
Supported EMS Providers:
<ul>
<li>Mailerlite</li>
<li>Mailchimp</li>
<li>Kit (previously known as ConvertKit)</li>
</ul>
Perfect For:
<ul>
<li>Bloggers and content creators</li>
<li>Small businesses building email lists</li>
<li>Developers needing a flexible subscription solution</li>
<li>Anyone wanting control over their subscriber data</li>
</ul>
How It Works:
<ol>
<li>With EMS Connected: Subscribers are automatically sent to your configured email marketing service</li>
<li>Without EMS: Subscribers are stored securely in your WordPress database with full admin management tools</li>
<li>Always Functional: Forms work regardless of your EMS connection status</li>
</ol>
<h3>External services</h3>
This plugin connects to third-party Email Marketing Service (EMS) APIs to synchronize subscriber data when an EMS integration is configured. The plugin only connects to these services when users explicitly configure their API credentials in the plugin settings.
When an EMS connection is configured, the plugin sends subscriber information (email address and optional first name) to the selected email marketing service each time a user submits a subscription form.
Supported External Services:
<ul>
<li>
ConvertKit (Kit): https://api.convertkit.com/v3/
<ul>
<li>Used for: Validating API credentials, retrieving available forms/lists, and subscribing users</li>
<li>Data sent: Email address, first name (optional), custom fields, and tags</li>
<li>Privacy policy: https://convertkit.com/privacy</li>
<li>Terms of service: https://convertkit.com/terms</li>
</ul>
</li>
<li>
Mailchimp: https://{dc}.api.mailchimp.com/3.0/
<ul>
<li>Used for: Validating API credentials, retrieving available lists, and subscribing users</li>
<li>Data sent: Email address and first name (optional)</li>
<li>Privacy policy: https://www.intuit.com/privacy/statement/</li>
<li>Terms of service: https://www.intuit.com/legal/</li>
</ul>
</li>
<li>
MailerLite: https://connect.mailerlite.com/api
<ul>
<li>Used for: Validating API credentials, retrieving available groups/lists, and subscribing users</li>
<li>Data sent: Email address and first name (optional)</li>
<li>Privacy policy: https://www.mailerlite.com/legal/privacy-policy</li>
<li>Terms of service: https://www.mailerlite.com/legal/terms-of-use</li>
</ul>
</li>
</ul>
Important Notes:
<ul>
<li>No data is sent to external services unless users explicitly configure an EMS connection</li>
<li>When no EMS is configured, all subscriber data remains stored locally in your WordPress database</li>
<li>Users can disable EMS integration at any time, reverting to local-only storage</li>
<li>The plugin respects user privacy and only transmits data necessary for email marketing functionality</li>
</ul>
<h3>Developer Notes</h3>
Hooks & Filters:
The plugin provides various hooks and filters for developers to extend functionality:
<ul>
<li><code>capture_before_subscribe</code> – Action fired before processing subscription</li>
<li><code>capture_after_subscribe</code> – Action fired after successful subscription</li>
<li><code>capture_form_fields</code> – Filter to modify form fields</li>
<li><code>capture_success_message</code> – Filter to customize success messages</li>
</ul>
Database:
The plugin creates a <code>capture_subscribers</code> table to store local subscriptions with proper indexing for performance.
Source Code:
To view the unminified source code, visit the <a href="https://github.com/dannycooper/capture" rel="nofollow ugc">GitHub repository</a>.

Capture

A WordPress plugin for capturing email subscriptions with EMS integration and local storage options.

Vlass Contreras

Integrate your Gravity Forms with SendGrid to send submissions with email fields to your contact lists.
<h3>Advanced</h3>
You can customize the contact data sent to SendGrid in the entry submission context with this hook:
<pre><code>apply_filters( 'gragrid_contact_params', array $contact_params, array $entry, array $form )
</code></pre>
<ul>
<li><code>$contact_params</code> (array): Contact parameters, includes first name, email, custom fields, etc.</li>
<li><code>$entry</code> (array): The form entry that was just created.</li>
<li><code>$form</code> (array): The current form, the origin of the submission.</li>
</ul>
You can also customize the SendGrid API requests using the following hook:
<pre><code>apply_filters( 'gragrid_request_args', array $args, string $path )
</code></pre>
<ul>
<li><code>$args</code> (array): Request arguments, includes headers, method, body, etc.</li>
<li><code>$path</code> (string): The specific API endpoint being called.</li>
</ul>

Gragrid: Gravity Forms + SendGrid

Integrates Gravity Forms with SendGrid, allowing form submissions to be automatically sent to your SendGrid contact lists.

Capture vs Gragrid: Gravity Forms + SendGrid