$mail = new PHPMailer;

$mail->isSMTP();                            // Set mailer to use SMTP
$mail->SMTPAuth = true;                     // Enable SMTP authentication
$mail->Username = 'xx@gmail.com';          // SMTP username
$mail->Password = 'xxxx'; // SMTP password
$mail->Host = 'smtp.gmail.com';
$mail->SMTPSecure = 'ssl';
$mail->Port = 465;

//Set the encryption system to use - ssl (deprecated) or tls
$mail->setFrom('info@example.com', 'CodexWorld');
$mail->addReplyTo('info@example.com', 'CodexWorld');
$mail->addAddress('john@gmail.com');   // Add a recipient
$mail->addAddress($data['email']);   // Add a recipient
$mail->isHTML(true);  // Set email format to HTML

$message = '

  <p>HELLO</p>

';

$mail->msgHTML($message);

try {
    if(!$mail->send())
    {
         echo  $mail->ErrorInfo;
    } else {
       /*redirect*/
    }