Form and PHP

HTML Form
<form id="signup" class="tab-pane fade wuo-form" name="register" method="post" action="../PHP/sendEmail.php">
                <h3>Register</h3>
                <div class="form-group">
                    <label for="newuser">Username: </label>
                    <input type="text" class="form-control" name="newuser" required/>
                </div>
                <div class="form-group">
                    <label for="newpass">Password: </label>
                    <input type="password" class="form-control" name="newpass" required/>
                </div>
                <div class="form-group">
                    <label for="cpass">Confirm Password: </label>
                    <input type="password" class="form-control" name="cpass" required/>
                </div>
                <div class="form-group">
                    <label for="fname">First Name: </label>
                    <input type="text" class="form-control" name="fname" required/>
                </div>
                <div class="form-group">
                    <label for="lname">Last Name: </label>
                    <input type="text" class="form-control" name="lname" required/>
                </div>
                <div class="form-group">
                    <label for="email">Email: </label>
                    <input type="email" class="form-control" name="email" required/>
                </div>
                <div class="form-group">
                    <label for="phone">Phone Number: </label>
                    <input type="number" class="form-control" name="phone" required/>
                </div>
                <div class="form-group">
                    <label for="zipostal">Zip/Postal Code: </label>
                    <input type="number" class="form-control" name="zipostal" required/>
                </div>
                <div class="form-group">
                    <label for="house">Household Size: </label>
                    <input type="number" class="form-control" name="house" required/>
                </div>
                <button type='submit' class='btn btn-primary'>Submit</button>
            </form>

PHP Code
<!DOCTYPE_html>
<html>
	<head>
		<meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *">
	</head>
</html>
<?php
	date_default_timezone_set('Etc/UTC');
	require "PHPMailerAutoload.php";

	$email = $_POST["email"];

	$subject = "Email from Mobile App";
	$message = "Hello Recipient, <br>this email may appear to be sent by Mugiesshan Anandarajah, but he was hacked. It is I, Wuotrition, you sent this email.";

	if (mail($email,$subject,$message)) {

	}
?>