title: Email mask for MaskedTextBox in C#
body: <p>Does anyone have a ready email mask for MaskedTextBox?</p>
  
  <p>e.g. </p>
  
  <pre><code>aaaa...aaa@fff.ee / aaaa...aaa@ff.ee / aaaa...aaa@fff.eee / aaaa...aaa@ff.eee /  
  </code></pre>
  
  <p>p.s. Please do not suggest RegEx!</p>