title: Office 365 REST API - prevent global attendee updates on new calendar invite
body: <p>I'm using the Office 365 Calendar REST API (specifically the <a href="https://msdn.microsoft.com/office/office365/APi/calendar-rest-operations#UpdateEvents" rel="nofollow">"Update Events"</a> calls) to add and remove attendees. Would like to add invitees without triggering an update to all attendees.</p>
  
  <p>The docs clearly state:</p>
  
  <blockquote>
    <p>"If the user is the organizer, the server sends meeting updates to all attendees."</p>
  </blockquote>
  
  <p>Great. But how do you disable this behaviour?</p>
  
  <p>The <code>isOrganizer</code> flag on <a href="https://msdn.microsoft.com/office/office365/APi/complex-types-for-mail-contacts-calendar#EventResource" rel="nofollow">EventResource</a> does NOT seem to do anything.</p>
  
  <p>The EWS API has a SendInvitationsMode flag which is basically the behaviour I'm looking for: <a href="https://stackoverflow.com/a/21708579">https://stackoverflow.com/a/21708579</a></p>
  
  <p>Is it possible to disable sending out new invites to every attendee using the REST API?</p>