Microsoft Push Notification Service capacity

Question

Does anybody know the limits of using the MPNS? I need to know specifically if I can send to MPNS millions of notifications to unique devices (if I ever had) almost all at once (seconds) and how will the MPNS handle it? is it no problem? will MPNS handle the notifications as soon as it can? would the MPNS block my service?

Thanks

Answer 1

The only limit I saw mentioned on MSDN is this :

Authenticated web services do not have a daily limit on the number of push notifications they can send. Unauthenticated web services, on the other hand, are throttled at a rate of 500 push notifications per subscription per day. For more info, see Setting up an authenticated web service to send push notifications for Windows Phone.

It's a limit per device per day, and it exists only if you don't setup an authenticated web service.

They don't mention a limit on the number of unique devices.