title: Cakephp : add more recipients before send an email
body: <p>I have to send an email to several recipients, but only if my current email address is marked as 'out of office'. In order to do that I will need to check the condition before sending the email and to retrieve my backups and add them in $to .</p>
  
  <p>I currently managed to find a quick fix, I've modified CakeEmail, but it seems a little wrong to alter this file.</p>
  
  <p>Any ideea of how I can do this without modifying CakeEmail?  </p>
  
  <p>Thank you, </p>