How to make notifications when the application is closed?

Question

Android

Hey!
Please tell me how to implement the delivery of notifications to the user if the server can only send notifications to the mail. Create a background service that will query the server for changes? (It seems that it will eat resources) Write a web server that will receive the forwarded message from the mail and notify? (Looks like bullshit)

Answer 1

I don't know how much this can help, but have you looked into push notifications? Alternatively, even through a third-party service.

Answer 2

I advise you to look at Firebase Cloud Messaging and send data pushes