메일보내기 도와주세요

function mailer($fname, $fmail, $to="", $subject, $content, $type=0, $file="", $cc="", $bcc="")
{
    global $config;
    global $g5;

    // 메일발송 사용을 하지 않는다면
    if (!$config['cf_email_use']) return;

    if ($type != 1)
        $content = nl2br($content);

    $mail = new PHPMailer(); // defaults to using php "mail()"
    if (defined('G5_SMTP') && G5_SMTP) {
        $mail->IsSMTP(); // telling the class to use SMTP
        $mail->Host = G5_SMTP; // SMTP server
        if(defined('G5_SMTP_PORT') && G5_SMTP_PORT)
            $mail->Port =G5_SMTP_PORT;
    }
    $mail->CharSet = 'UTF-8';
 $mail->Username=$fmail;
    $mail->From = $fmail;
    $mail->FromName = $fname;
    $mail->Subject = $subject;
    $mail->AltBody = ""; // optional, comment out and test
    $mail->msgHTML($content);
   $mail->addAddress($to);
    $mail->addAddress($to);
    if ($cc)
        $mail->addCC($cc);
    if ($bcc)
        $mail->addBCC($bcc);
    //print_r2($file); exit;
    if ($file != "") {
        foreach ($file as $f) {
            $mail->addAttachment($f['path'], $f['name']);
        }
    }
    return $mail->send();
}

제메일로 오게하려하는데 제메일주소를 어느 부분에 쓰는지 모르겠어요