title: how to redirect user from php file back to `index.html` on dreamhost
body: <p>I'm setting up a simple landing page on DreamHost.  It won't let me put php code in the file <code>index.html</code>.  So, when user submits an email address, I use <code>$_POST</code> to submit the email address to another page <code>mail_auto.php</code>. </p>
  
  <p>After seeing a quick "email sent" message, I'd like the user to be directed back to the <code>index.html</code> page from <code>mail_auto.php</code>.</p>
  
  <p><code>header()</code> looks a bit complex and seems to interfere with the execution of the balance of <code>mail_auto.php</code>.</p>
  
  <p>What's the best way to redirect the user? </p>