title: One-liner to extract domain from email address
body: <p>How to optionally extract <code>domain</code> from <code>local-part@domain</code>? My attempt is</p>
  
  <pre><code>Try(email.split("@")(1)).toOption
  </code></pre>
  
  <p>but seems there should be a way without depending on exception handling. Ideally, I am after one-liner. </p>