title: Sending a broadcast notification with Google Cloud Messaging
body: <p>I am using Google Cloud Messaging to provide push notifications. I may need to send a broadcast notification to around 10.000 users. However, I read that a Multicast message can contain a list with 1000 registration ids, maximun.</p>
  
  <p>So, do I need to send ten multicast messages? Is there any way to send a broadcast to all the clients without generating the lists with all the ids?</p>
  
  <p>thanks in advace.</p>