How to send firebase notifications to audience via HTTP - firebase

Question

In Firebase Console I set up audiences based on various user properties and now am able to send notifications to different user segments via console. Is there a way to do the same by http requests to fcm servers? There should be a trick with "to" field, but I couldn't figure it out.

Answer 1

firebaser here
There is currently no way to send a notification to a user segment programmatically. It can only be done from the Firebase Console as you've found.
We're aware that allowing this through an API would expand the potential for Firebase Notifications a lot. So we're considering adding it to the API. But as usual: no commitment and no timelines, since those tend to change as priorities shift.

Answer 2

This has been a popular request, but unfortunately it is not yet possible. We are looking into this.
Please check Firebase Cloud Messaging announcements for any updates in the future.

Answer 3

You can try with topic subscriptions. It is not perfect solution but the best for me at this time.
{
"to": "/topics/audience1_subscription"
"data" : {
"title" : "Sample title",
"body" : "Sample body"
},
}

Answer 4

Yes. No solid solutions are available as of now but I have a workaround solution for it. Which is not able to handle every scenario but it will get the work done.
For that, you need to figure out the audience within the app and you need to segment them with topics. Then you can send a push notification for that particular topic via API.
Let's take an example.
Send notifications to users who didn't open the app in the last 7 days
Subscribe to a topic name "app-open?date=09-21-2022"
each time user opens the app. Just unsubscribe from the topic of the last app opened and subscribe to a new topic with the current date.
Then you just need to build a topic string based on the current day - 7 to send.
And you can create multiple topics for the same user for different behaviors and use them as topics to send push notifications via API to segmented users.
As there is no limit on topics per user or topics per project. You can create as many as topics you want and use them as your need.

Answer 5

Yes.There is trick with the "to" field as mentioned in below.
web URL is: https://fcm.googleapis.com/fcm/send
Content-Type: application/json
Authorization: key="YOUR_SEVER_KEY"
JSON DATA FORMAT:
{"to": "USER_FIREBASE_TOKEN",
"data": {"message": "This is a Firebase Cloud Messaging Topic Message",}
"notification": {"body": "This is firebase body",}}";