What is a Push Notification?
A push notification is a message that gets ‘pushed’ from our servers to the devices, at the time of your choosing. It appears on the device in the same way that a text message would appear: outside of the app, on the device itself.
Here’s how they look on various devices:
As a badge on iOS apps
On Android Wear
And in the notification centers of iOS and Android
Note that Push Notifications cannot be sent to users using the web version of the app.