<?php
require 'PHPMailer\PHPMailerAutoload.php';
require 'credentials.php';

$email = $_POST['email'];

$mail = new PHPMailer;
$mail->isSMTP();
$mail->SMTPDebug = 2;
$mail->Debugoutput = 'html';
$mail->Host = 'smtp.gmail.com';
$mail->Port = '587';
$mail->SMTPSecure = 'tls';
$mail->SMTPAuth = true;
$mail->Username = $username;
$mail->Password = $password;
$mail->setFrom($username);
$mail->addAddress($email);
$mail->Subject = 'You have signed up for 3rd Party OWL';
$mail->Body = 'Welcome, the first match will be on May 30th';

//send the message, check for errors
if (!$mail->send()) {
    echo "Mailer Error: " . $mail->ErrorInfo;
} else {
    echo "Message sent!";
}