do you need a Handler here? I think you can just call Toast.makeText(c, extras.toString(), Toast.LENGTH_SHORT).show(); And instead of making a toast, you should do this: http://developer.android.com/reference/android/app/Notification.Builder.html
Create a notification instead with the the content title set as "new donation: " + extras.get("message")
and include the feeding forward icon as the icon.