I'm a web designer who developed an android app for a client with the help of an android developer. Is there an easy way for my client, who knows no code, to send push notifications? I was hoping for a simple app or website where he could load his contacts who've downloaded his app, then create a push message, then choose who among his contacts to send it to? Does such a thing exist? Thank you for any feedback.
It's not possible for non programmers to send push notifications. Push notifications are created using the Google Cloud Messaging for Android API (GCM) and need to be implemented on both the Android app and server-side. You can read more about the push notifications functionality in the official GCM webpage here: http://developer.android.com/google/gcm/index.html