I created a category. When I go to contacts I find it there. When I type an email and insert the category name in the to box the category name with a + in front of it appears. When I click send an error message opens. MESSAGE COULD NOT BE SENT 

                                                                                                                                 TYPE AN EMAIL ADDRESS FOR ONE OR MORE RECIENTS

                                                                                                                                  IN THE TO, Ca, or Bcc  BOX