public function trigger( $args ) {
			$this->setup_locale();

			if ( ! empty( $args ) ) {
				$defaults = array(
					'order_id'      => '',
					'customer_note' => '',
				);

				$args = wp_parse_args( $args, $defaults );

				$order_id      = $args['order_id'];
				$customer_note = $args['customer_note'];

				if ( $order_id ) {
					$this->object = wc_get_order( $order_id );

					if ( $this->object ) {
						$this->recipient                      = $this->object->get_billing_email();
						$this->customer_note                  = $customer_note;
						$this->placeholders['{order_date}']   = wc_format_datetime( $this->object->get_date_created() );
						$this->placeholders['{order_number}'] = $this->object->get_order_number();
					}
				}
			}

			if ( $this->is_enabled() && $this->get_recipient() ) {
				$this->send( $this->get_recipient(), $this->get_subject(), $this->get_content(), $this->get_headers(), $this->get_attachments() );
			}

			$this->restore_locale();
		}