It took me forever to figure this one out...
Change your MailHandler.php code to look like the below or just cut and paste this code. Note: make sure you are entering a valid email address on the HTML contact form or it will not work, I tested with my yahoo account email address.
PHP Code:
<?php
$owner_email = "YourEmailAddressHere@xxx.com";
$headers = 'From:' . $_POST["email"];
$subject = 'A message from your site visitor ' . $_POST["name"];
$messageBody = "";
if($_POST['name']!='nope'){
$messageBody .= '<p>Visitor: ' . $_POST["name"] . '</p>' . "\n";
$messageBody .= '<br>' . "\n";
}
if($_POST['email']!='nope'){
$messageBody .= '<p>Email Address: ' . $_POST['email'] . '</p>' . "\n";
$messageBody .= '<br>' . "\n";
}else{
$headers = '';
}
if($_POST['state']!='nope'){
$messageBody .= '<p>State: ' . $_POST['state'] . '</p>' . "\n";
$messageBody .= '<br>' . "\n";
}
if($_POST['phone']!='nope'){
$messageBody .= '<p>Phone Number: ' . $_POST['phone'] . '</p>' . "\n";
$messageBody .= '<br>' . "\n";
}
if($_POST['fax']!='nope'){
$messageBody .= '<p>Fax Number: ' . $_POST['fax'] . '</p>' . "\n";
$messageBody .= '<br>' . "\n";
}
if($_POST['message']!='nope'){
$messageBody .= '<p>Message: ' . $_POST['message'] . '</p>' . "\n";
}
if($_POST["stripHTML"] == 'true'){
$messageBody = strip_tags($messageBody);
}
mail($owner_email, $subject, $messageBody, $headers)
?>