Send WordPress critical error notifications to multiple recipients

my_multiple_recovery_email_recipients.php

<?php
/**
 * Set recipients for WP Recovery Mode emails
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
 
add_filter('recovery_mode_email', 'my_multiple_recovery_email_recipients');
function my_multiple_recovery_email_recipients($email) {
	$email['to'] = 'you@example.com, developer@example.com';
	return $email;
}