title: Symfony2 - How to validate an email address in a controller
body: <p>There is an email validator in symfony that can be used in a form: <a href="http://symfony.com/doc/current/reference/constraints/Email.html">http://symfony.com/doc/current/reference/constraints/Email.html</a></p>
  
  <p>My question is: How can I use this validator in my controlelr in order to validate an email address?</p>
  
  <p>This is possible by using the PHP preg_match for usere, but my question is if there is a possibility to use the Symfony already built in email validator.</p>
  
  <p>Thank you in advance.</p>