PITS Firebase Cloud Message Notifications
Firebase Cloud Messaging, formerly known as Google Cloud Messaging, is a cross- platform cloud solution for messages and notifications for Android, iOS, and Web applications, which currently can be used at no cost. The service is provided by Firebase, a subsidiary of Google. It will give you the luxury to inform your user in real time about the new email, task, activity or any other data to get notified. It works on the principle of down streaming messages from FCM servers to user's app and upstream messages from user's apps to FCM servers.
2) Can add multiple device token to a partner
3) Can test a verification message along with the configuration
4) Easily call the method from anywhere on your module.