view order meta shortcodes Email customizer plus

view_order_meta_shortcodes.php

<?php
add_filter('woocommerce_email_customizer_plus_additional_short_codes_list',function($additional_short_codes){
	$order_id = 803;
	$order_meta_keys = get_post_custom_keys($order_id);
	if (!empty($order_meta_keys)) {
		$order_meta_values = get_post_meta($order_id);
		foreach ($order_meta_keys as $order_meta_key) {
			if (isset($order_meta_values[$order_meta_key]) && isset($order_meta_values[$order_meta_key][0])) {
				$order_meta_key_for_short_code = str_replace(' ', '_', $order_meta_key);
				$key =  'order_meta.'.$order_meta_key_for_short_code;
				if (is_string($order_meta_values[$order_meta_key][0])) {
					$additional_short_codes[$key] = $order_meta_values[$order_meta_key][0];
				}
			}
		}
	}
	return $additional_short_codes;
},10,3);