<?php
require 'PHPMailer/PHPMailerAutoload.php';
$mail = new PHPMailer(true);
$mail->SMTPDebug = 4;
$mail->isSMTP();
$mail->Host = 'smtp.gmail.com';
$mail->SMTPAuth = true;
$mail->Username = 'MY FIRST EMAIL@gmail.com';
$mail->Password = 'MY PASSWORD';
$mail->SMTPSecure = 'tls';
$mail->Port = 587;
$mail->From = 'MY FIRST EMAIL@gmail.com';
$mail->FromName = 'Kalai Vanan';
$mail->addAddress('MY SECOND EMAIL@gmail.com', 'Kalaivanan');
$mail->addReplyTo('MY FIRST EMAIL@gmail.com', 'Kalaivanan');
$mail->WordWrap = 50;
$mail->isHTML(true);
$mail->Subject = 'Welcome Mail';
$mail->Body    = 'This is welcome mail';
if(!$mail->send()) {
   echo 'Message could not be sent.';
   echo 'Mailer Error: ' . $mail->ErrorInfo;
   exit;
}
echo 'Message has been sent';
?>

$mail = new PHPMailer();
$mail->IsSMTP(); // set mailer to use SMTP
$mail->Host = "ssl://smtp.gmail.com"; // specify main and backup server
$mail->Port = 465; // set the port to use
$mail->SMTPAuth = true; // turn on SMTP authentication
$mail->Username = "email@address.com";
$mail->Password = "password";
$mail->Send();