MailerLite Integration w/ Resubscribe support - Elementor Pro Forms

functions.php

add_action( 'elementor_pro/forms/new_record', function( $record ) {
	// Make sure this is the correct form
	$form_name = $record->get_form_settings( 'form_name' );
	if ( 'YOUR_ACTUAL_FORM_NAME_HERE' !== $form_name ) {
		return;
	}
	$submmited_fields = $record->get( 'fields' );

	// Ref: https://developers.mailerlite.com/v2/reference#create-a-subscriber
	$fields = [
		'email' => $submmited_fields['ID_OF_YOUR_EMAIL_FIELD']['value'],
		'name' => $submmited_fields['ID_OF_NAME_FIELD']['value'],
		'resubscribe' => true,
		'fields' => [
			'FIELD_KEY' => $submmited_fields['ID_OF_A_FIELD']['value'],
		],
	];
	// Add subscriber
	// Use //https://api.mailerlite.com/api/v2/groups/{Group_ID}/subscribers to add directly to a group
	$url = 'https://api.mailerlite.com/api/v2/subscribers'; 
	wp_remote_post( $url, [
		'headers' => [
			'content-type' => 'application/json',
			'x-mailerlite-apikey' => 'YOUR_ACTUAL_API_KEY_HERE',
		],
		'body' => $fields,
	]);
});

//or if you have MailerLite PHP SDK :
add_action( 'elementor_pro/forms/new_record', function( $record ) {
	if ( ! class_exists( '\MailerLiteApi\MailerLite' ) ) {
		// Mailerlite SDK Missing
		return;
	}
	// Make sure this is the correct form
	$form_name = $record->get_form_settings( 'form_name' );
	if ( 'YOUR_ACTUAL_FORM_NAME_HERE' !== $form_name ) {
		return;
	}
	$submmited_fields = $record->get( 'fields' );

	// Ref: https://developers.mailerlite.com/v2/reference#create-a-subscriber
	$fields = [
		'email' => $submmited_fields['ID_OF_YOUR_EMAIL_FIELD']['value'],
		'name' => $submmited_fields['ID_OF_NAME_FIELD']['value'],
		'resubscribe' => true,
		'fields' => [
			'FIELD_KEY' => $submmited_fields['ID_OF_A_FIELD']['value'],
		],
	];
	// Add subscriber
	$subscribers_api = ( new \MailerLiteApi\MailerLite( 'YOUR_ACTUAL_API_KEY_HERE' ) )->subscribers();
	$added_subscriber = $subscribers_api->create( $fields ); // returns added subscriber

	/*
	 * You can add directly to a group
	    $groups_api = (new \MailerLiteApi\MailerLite('API_KEY'))->groups();
	    $group_id = 123;
	    $added_subscriber = $groups_api->addSubscriber($groupId, $fields ); // returns added subscriber
	 *
	 */
});