_content_plain() { return wc_get_template_html( $this->template_plain, array( 'order' => $this->object, 'email_heading' => $this->get_heading(), 'additional_content' => $this->get_additional_content(), 'sent_to_admin' => false, 'plain_text' => true, 'email' => $this, ) ); } /** * Default content to show below main email content. * * @since 3.7.0 * @return string */ public function get_default_additional_content() { return $this->email_improvements_enabled ? __( 'Thanks again! If you need any help with your order, please contact us at {store_email}.', 'woocommerce' ) : __( 'Thanks for using {site_url}!', 'woocommerce' ); } } endif; return new WC_Email_Customer_Processing_Order();