Just lately a number of my emails are displaying in a folder as if there are 2 messages from the same sender. It will not let me delete them. If I try from the main screen the option to edit and delete is not there nor does swiping across work. If I go into the message I can delete the individual message but then I am left with with a message I cant delete that is saying no sender no subject and is dated 01/01/1970!!!