Is it possible to send an fb notification from external website? For example, www.xxxx.com will send a notification to a certain fb user

Question

For example, www.xxxx.com will send a notification to a certain fb user.

 POST /{recipient_userid}/notifications?
 access_token= … & 
 href= … & 
 template=@[596824621] started a game with you, play now!

Answer 1

I figured out that sending notifications to facebook users via external website is not possible, but sending messages with the permission of user and posting to wall will do.