Setting up PHPmailer, not receiving any emails? - php

Question

I've been trying to set up my php emailer today but for some reason it simply isn't sending my emails. I have my website hosted with hostgator and was told to set up the smtp via gator3115.hostgator.com with port 465 when using hostgator which is what i've done but when I check the recipient email there still isn't anything on there. Anyone know what's going on here?
<?php
ob_clean();session_start();
if (isset($_GET['logout'])){
session_destroy();
}
if (!isset($_SESSION['loggedin']) || $_SESSION['loggedin'] == false) {
header("Location: index.php");
}
if (isset($_POST['submit'])){
require 'PHP/mailer/PHPMailerAutoload.php';
$mail = new PHPMailer;
//$mail->SMTPDebug = 3; // Enable verbose debug output
$mail->isSMTP(); // Set mailer to use SMTP
$mail->Host = 'gator3115.hostgator.com'; // Specify main and backup SMTP servers
$mail->SMTPAuth = true; // Enable SMTP authentication
$mail->Username = '*******'; // SMTP username
$mail->Password = '*******'; // SMTP password
$mail->SMTPSecure = 'tls'; // Enable TLS encryption, `ssl` also accepted
$mail->Port = 465; // TCP port to connect to
$mail->setFrom('matt#sulmaxmarketing.com', 'Mailer');
$mail->addAddress('sulmaxcp#gmail.net', 'Joe User'); // Add a recipient
$mail->addAddress('ellen#example.com'); // Name is optional
$mail->addReplyTo('info#example.com', 'Information');
$mail->addCC('cc#example.com');
$mail->addBCC('bcc#example.com');
$mail->addAttachment('/var/tmp/file.tar.gz'); // Add attachments
$mail->addAttachment('/tmp/image.jpg', 'new.jpg'); // Optional name
$mail->isHTML(true); // Set email format to HTML
$mail->Subject = 'Here is the subject';
$mail->Body = 'This is the HTML message body <b>in bold!</b>';
$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';
if(!$mail->send()) {
echo 'Message could not be sent.';
echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
echo 'Message has been sent';
}
}
?>