title: how to get Facebook taggable friends Email Ids
body: <p>I am using Facebook Javascript sdk to get logged in user contacts {Name ,Email}
  according to recent update in user_friends we can only get friends of the users who also uses the same app. so i am trying to get user taggable friends in taggable friends we can get user friends id and name but not friends Email. is there any posibility to get taggable friends Email Id from their Id </p>