title: Log users visiting a Google Spreadsheet
body: <p>I'm trying to track visitors from my organization to my Spreadsheet. I've been researching scripts that can do this and I finally seem to have one that allows to track edits. However, some of the people visiting my spreadsheet, won't make any edit. And I still want to retrieve their email address (or at least handle).</p>
  
  <p>Seems like it would be a very simple script but I haven't found anything. Anyone know how we can do this?</p>
  
  <p>Thanks in advance!</p>