code: function appendValueType(obj, arr, filterType) {
      var i = arr.length
          found = false;
      while (i--) {
          if (arr[i] === obj) 
            found = true; 
      }
      if (filterType === 'email') {
        if(utils.isEmail(obj)){
          arr.push(obj);
        }
      }else{
        arr.push(obj);
      }
  }
docs: append a email/tel if it is not already in the right array