anchor.diff:  </pre>
   -->
   
  -<h2>Message Content</h2>
  +<h2>Content Body</h2>
   <% parts = @mail.multipart? ? @mail.parts : [@mail] %>
   <% parts.each do |part| %>
     <h3 class="content_type"><%= part.content_type %></h3>
  
positive.code:   .headers {
      color: #333;
    }
    .deliver_form {
      margin-bottom: 0;
      float: right;
  
negative.code:   <%= text_field_tag :to, '', :placeholder => 'Send this email to me@yourcompany.com' %>
    <button type="submit">Send</button>
  <% end %>
  <h2>Headers</h2>
  <div class="headers">
  <% @mail.header_fields.each do |header| %>
   <dl>
     <dt><%= header.name %></dt>
     <dd><%= header.decoded %></dd>
   </dl>
  <% end %>
  </div>
  <!--
  <h3>Debug output</h3>
  <pre>
  