Upvote:4

Aprove answer 
var user = PFUser.currentUser()
user.setValue(newEmail, forKey: "Email")
user.saveInBackgroundWithBlock {
  (succeeded: Bool!, error: NSError!) -> Void in
       if error == nil {
           println "Profile Updated."
       } else {
           println "Failed"
           //present alert to user to let them know that it failed
           //ask them to try a new email address
       }
 }

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