How  do  I  stop  someone  to  from  emailing me  or  block  them.. or  can  I  change  my  email  info  and  still  have my  contacts// that is  the  only  thing  i am  worried  about  is  losing  my  contacts  i have  without  having  to  just  make a  whole  new  one.  can  someone  please  help me