gistfile1.txt

<?php
/**
 * Send test email for DPP
 * Replace $order_id with an existing scheduled order on your site
 * Refresh a WooCommerce page, e.g. WooCommerce > Orders to fire the snippet
 */
function prefix_test_scheduled_order_due_email() {
	$order_id = 91;
	wcdpp_scheduled_order_due_email( $order_id );
}
add_action( 'woocommerce_after_register_post_type', 'prefix_test_scheduled_order_due_email' );