I figured out a work-around.
For the “contactus.html” form just use this:
<form action="../../local/contact/sendmail.php" method="post">
<label for="email" id="emaillabel">Email address <strong class="required">(required)</strong></label><br>
<input id="email" name="email" type="email" size="57" maxlength="60" required="required" value=""><br><br>
<label for="subject" id="subjectlabel">Subject <strong class="required">(required)</strong></label><br>
<input id="subject" name="subject" type="text" size="57" maxlength="80" minlength="5"
title="Minimum 5 characters." required="required"><br><br>
<label for="message" id="messagelabel">Message <strong class="required">(required)</strong></label><br>
<textarea id="message" name="message" rows="5" cols="58" minlength="5"
title="Minimum 5 characters." required="required"></textarea><br>
<input value="Submit" type="submit">
</form>
Then, in the same directory that has the /local/contact/index.php file. Create another file called “sendmail.php” and put this in that file:
<?php
$email=$_POST['email'];
$subject=$_POST['subject'];
$message=$_POST['message'];
mail($email ,$subject, $message);
?>
Super simple, and it works. But, I don't think it hides your email address from the person you send the email to. If I figure that out, I will post it here.