title: Invite a friend to app using Facebook Graph API
body: <p>I'm trying to invite a friend to use my Facebook app, using the "apprequest" method, as described in this link: <a href="https://developers.facebook.com/docs/reference/dialogs/requests/" rel="nofollow">https://developers.facebook.com/docs/reference/dialogs/requests/</a>.</p>
  
  <p>However, only friends that are already using the app can see the request!</p>
  
  <p>How can I send an invitation to someone who isn't already using the app?</p>
  
  <p>Thanks.</p>