We’ve made a small change to our API that affects message priority. Previously on our iOS client, messages with a priority of -1 would only update the badge number for the Pushover app icon and not show any notification details. To provide more functionality and match our Android client behavior, these messages will now show a notification, though still without vibration or sound so as not to disturb you. Messages received during quiet hours will still use this priority.
A new priority -2 is available through our API which will only update the app badge on iOS, and as of our new version 2.2.1 Android client, will not generate any system notification on Android. This is useful for sending messages to your Android device that will only be used to interface with Tasker, since you will not have to dismiss these notifications afterwards.