title: Per day limit on number of GCM requests per day
body: <p>I am using GCM server. I have gone through google and GCM official docs. But I am not able to know about the number of messages or requests that can be made per day against an API key.</p>
  
  <p>Is there is any limit on number of messages that can be send to or from android apps and Third party application server using GCM.</p>
  
  <p>Thanks and advance.</p>