I just wanted to know, is there any other messaging service except GCM for android which is free? As per my knowledge GCM is not free service.
And another thing. I got another messaging service, Firebase messaging service (though it is provided by Google). I created an account in FireBase Cloud Messaging and got the API Server Key and Sender Id which is required from Pega End for push notification and used the same. But it did not work.
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