title: I need to group Google Apps users by their Organization
body: <p>Here's what I'm trying to do:</p>
  
  <p>When people log into our app, using Google Apps OAuth, they are automatically grouped within the app, by their organization.</p>
  
  <p>We're already doing this with Slack, where a user logs in, says which team they want to log in from, and they are automatically grouped with other people from their Slack team.</p>
  
  <p>With Google, it seems a bit more complicated.  I do not need access to anything within the organization: no user list, no other e-mails, no files.  All I need is the name of the organization, and some sort of unique identifier.</p>
  
  <p>Is this even possible? I've been digging through <a href="https://developers.google.com/admin-sdk/directory/v1/guides/manage-users#get_user" rel="nofollow">this</a> without much success: it seems like an admin from the apps account has to install or approve the app? </p>
  
  <p>I'm getting the sinking feeling that this will have to be something setup via the Marketplace, but that's far from ideal from our perspective.</p>
  
  <p>Can it be done?</p>