Ip\Internal\Email\Db::sentOrLockedCount PHP Method

    public static function sentOrLockedCount($minutes)
    {
        $table = ipTable('email_queue');
        $sql = "select count(*) as `sent` from {$table} where\n        (`send` is not NULL and " . ipDb()->sqlMaxAge('send', $minutes, 'MINUTE') . ")\n        or (`lock` is not NULL and send is null) ";
        return ipDb()->fetchValue($sql);
    }