Multiple email address delimiter in Notifications

I setup an email notification and I can get it to alert only one e-mail address. I have tried using a space, a comma, a period, a colon and a semicolon as delimiters with zero success. So, what is the the delimiter that is used to separate email addresses in Notifications?

  • First email address in the To: box
  • second email address in the Cc: Box
  • Press the little down arrow on the Right Hand side to create a 2nd Cc: box
  • etc