If you are using GCM with Intercom you will need to migrate to FCM.
Read moreIs FCM push notification free?
Send messages to any device Firebase Cloud Messaging (FCM) provides a reliable and battery-efficient connection between your server and devices that allows you to deliver and receive messages and notifications on iOS, Android, and the web at no cost .
Read moreHow does FCM notification work?
If the device comes back online FCM will notify the app that pending messages were deleted: When the device gets back online, FCM will call onDeletedMessages() on Android . When the app is opened, FCM will trigger FIRMessagingMessagesDeletedNotification on iOS to notify the app that pending messages were deleted.
Read moreHow do you handle push notifications?
Option 1: In your Settings app
Read moreHow do I send push notifications to all devices?
Push notifications for FCM
Read moreHow does push notification work Firebase?
The Android push notifications through FCM actually treats the Data Messages as notification messages itself . As the interactions in the data messages are handled by the app itself, FCM’s work is just to deliver a notification and the message content.
Read moreHow do you send notifications to device on Android?
Send Device-to-Device Push Notification using Firebase Cloud Messaging
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