title: Outlook add-in Rest Api token to get the SharePoint Rest Api Token
body: <p>I am building a Outlook Add-in using Node JS and it needs get information from SharePoint Online using SharePoint Rest Api because Graph does`t have an option to get the required information.</p>
  
  <p><strong>Question?</strong>
  I need a SharePoint online auth token to call SP Rest Api which I am getting using OAuth flow (implicit flow) after user enters credentials.</p>
  
  <p>Is there a way to get the SharePoint online auth token using Outlook Rest Api returned by <em>getCallbackTokenAsync()</em> or <em>getUserIdentityTokenAsync()</em> or "getAccessTokenAsync()" method?</p>