$obj->email = 'proant777@naver.com';
$obj->subject = '김경희님의 메일 입니다. ';
$content_all = 'dfdafsdfasfasdfsadfasdfasfd';
$oMail = new Mail();
$oMail->setContentType("plain");
$oMail->setTitle($obj->subject);
$oMail->setContent(htmlspecialchars($content_all));
$oMail->setSender($obj->email."(".$_SERVER['REMOTE_ADDR'].")", $obj->email);
$to_mail_address = 'proant777@naver.com';
// 받는 사람
$from_mail_address = 'proant777@gmail.com';
$oMail->setReceiptor( $from_mail_address, $to_mail_address );
$st = $oMail->send();