This is an advance notice that we will completely remove the deprecated PushNotifications endpoints on March 27th, 2018.
12 months ago we replaced Push Notifications with the Webhooks service - which has almost identical functionality, but is much more scalable and reliable. The endpoints have been marked as deprecated in the documentation and there has been a deprecation header in every HTTP response. Now it is time to completely remove the them, calling these endpoints after March 27th will return HTTP 404 instead of redirecting to the respective Webhooks endpoint.
Please make sure all usage of the below endpoints in any code or services is replaced with the respective /webhooks endpoints by March 27th, 2018: