I am a dev.
Here is some code I have. Can you help with a few edits to send the packing slip?
function send_vendor_new_order_email($order_id) {
$emails = WC()->mailer()->emails;
$email_vendor = $emails[‘WC_Email_Vendor_New_Order’]->trigger($order_id);
}
add_filter(‘woocommerce_order_status_processing’, ‘send_vendor_new_order_email’, 1, 2);