function bp_messages_is_active_notice() {
	global $messages_template;

	$retval = ! empty( $messages_template->thread->is_active )
		? true
		: false;

	/**
	 * Filters whether or not the notice is currently active.
	 *
	 * @since 2.1.0
	 *
	 * @param bool $retval Whether or not the notice is currently active.
	 */
	return apply_filters( 'bp_messages_is_active_notice', $retval );
}