Is it possible to get notification delivery status via FCM api?

Question

Google

In FCM I send a notification from my server.

{
"to" : "bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1...",
"notification" : {
"body" : "great match!",
"title" : "Portugal vs. Denmark",
}
}

Returns

{
"multicast_id": 123,
"success": 1,
"failure": 0,
"canonical_ids": 0,
"results": [
{
"message_id": "0:123%123"
}
]
}

This means that the message has been successfully processed by FCM and will attempt to deliver it. But how to check that it is delivered to the user?

Answer 1

It seems like nothing. Only if upon receipt send yourself a request for confirmation of receipt.