swoboda · January 21, 2017 12:36
diff --git a/vat_number_emails.php b/vat_number_emails.php
 <?php

 add_filter( 'woocommerce_email_order_meta_keys', 'wpdesk_vat_number_display_email' );
 /**
 * Pole NIP w mailu
 */
 function wpdesk_vat_number_display_email( $keys ) {
     $keys['NIP'] = '_vat_number';
     return $keys;
 }
	<?php

	add_filter( 'woocommerce_email_order_meta_keys', 'wpdesk_vat_number_display_email' );
	/**
	* Pole NIP w mailu
	*/
	function wpdesk_vat_number_display_email( $keys ) {
	$keys['NIP'] = '_vat_number';
	return $keys;
	}