Delivery Channels are specified per-message. To configure a message for C2DM, the sending mode must be “SMS Only” and the Delivery Channel should be the C2DM Delivery Channel configured above.
In the message content screen, specify a subject and a short text content URL. Static content or scripted static content URLs may use Connect merge tags. Connect will pass the content unmodified to the Android application and the Android application is free to use the data as it sees fit.