title: Regular expression for email accepting some special characters
body: <p>I am using the following regular expression for email validation:</p>
  
  <pre><code>VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z]+)*\.[a-z]+\z/i
  </code></pre>
  
  <p>The issue is that <code>.@xyz.com</code> also gets validated.</p>
  
  <p>What do I need to change in the regular expression so that it checks that there is at least one <code>[a-z]</code> alphabet before <code>@</code>?</p>