title: Help, Registration emails go to spam inbox
body: <p>I just started offering user accounts on my website (large PR6 site, with a good reputation) and I noticed that the registration emails almost always go to the receivers spam box.</p>
  
  <p>So far we have only sent out a few emails, so its not like we've been slamming out thousands.</p>
  
  <p>I send the emails via PHP with the mail() function. Below you can find the headers that i send with the mail() function.</p>
  
  <pre><code>$headers  = 'MIME-Version: 1.0' . "\r\n";
  $headers  .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
  $headers  .= 'From: Domain.com &lt;noreply@mydomain.com&gt;' . "\r\n";
  </code></pre>
  
  <p>Is there a way, or a trick to get round these spam filters? Its clearly not spam what I am sending out. The registration email contains 3 links.</p>