//email-import-header
   function formatAddresses() {  
     var sheet = SpreadsheetApp.getActiveSheet();
     var data = sheet.getDataRange().getValues();
     var newData = [];  
   
     for (var i=0, len=data.length; i<len; i++) {
       // inner loop applies to sub-arrays
       for (var j=0, len2=data[i].length; j<len2; j++) {
          var str=data[0][j];
          var str1=str.replace('>','');
          var str2=str1.split('<');
           newData.push(str2);
       }
   }
   
     sheet.clearContents();
     sheet.getRange(1, 1, newData.length, newData[0].length).setValues(newData);
    
   }

   function onOpen() {
     var ui = SpreadsheetApp.getUi();
     // Or DocumentApp or FormApp.
     ui.createMenu('Cleanup contacts from email header')
         .addItem('Format and convert from columns to rows!', 'formatAddresses')
         .addToUi();  
   }