Embodiments relate to push notification middleware. A system includes a computer processor and a mobile platform server executable by the computer processor. The mobile platform server includes a notification service and a registry. The notification service is configured to receive a notification trigger including a payload to deliver to an endpoint and access the registry to determine a notification transport protocol associated with the endpoint. The notification service is further configured to select a channel plugin associated with the notification transport protocol to establish a notification channel with the endpoint and send the payload to the endpoint on the notification channel.