function Open($user, $pass, $host, $port = "110", $mbtype = "pop3", $mbfolder = "INBOX",$options = null, $retries = 1)
	{
		$this->mbox = imap_open(
			"{".$host.":".$port."/".$mbtype."/notls}".$mbfolder."",
			$user,
			$pass, $options, $retries);
	}