title: Regex e-mail validating with Æ Ø Å
body: <p>I need to validate a email address the best way, and I need to include some danish characters: </p>
  
  <blockquote>
    <p>Æ Ø Å</p>
    
    <p>æ ø å</p>
  </blockquote>
  
  <p>My current regex is:</p>
  
  <pre><code>\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
  </code></pre>
  
  <p>How to incorporate the extra letters, and is there any optimizing that can be done to ensure the best handling of the e-mail address?</p>