[Plugin: WooCommerce Print Invoices & Delivery Notes] How to add the client's email in the

Hello,

I am looking for a way to add my client’s email in the invoice. This would greatly help us in our workflow.

I try to add <?php echo wcdn_email(); ?><br />
in the print.php file but it didn’t work.

Any suggestions?

Thank you.

http://wordpress.org/extend/plugins/woocommerce-delivery-notes/