I've signed up for Urban Airship and went through all of the tutorials and setup for C2DM but now realizing one thing - there seems to be a requirement of the Android Market on the device and an existing Google Account (http://code.google.com/android/c2dm/)
This is a problem for me as the app is not to be delivered through the Market but through a pre-installed application on the KYROS MID7024 which is running Android 2.2 - we're planning to use this device exclusively so I really just need to know whether or not C2DM can be used outside of the market.
Looked all over the web, found some posts that were close but the fact that I will not be releasing my app in the market, solely on non-market devices I'm not having luck finding out if this is possible.
According to google docs for C2DM it says you can't..but is there anybody out there that's had any luck? Any other ideas for simple push notification platform to deliver messages to non-market tablets? I'm not tied to UA at all just like the model and documentation so far.
Thanks much in advance.
Definitively, authoritatively, trust me on this, C2DM won't work without Android Market.
From surfing around similar questions, came across this one, which indicates your best bet would be MQTT.