How to send notifications to a specific user via the notifications api?

Question

API

I welcome everyone and ask for your help and advice.
The bottom line is this, I studied far and wide notifications api https://developer.mozilla.org/en-US/docs/Web/API/n...
But I don’t understand how to send notifications to a specific user.
Tell me which way to dig?
Or maybe someone knows services like https://www.pushbullet.com

Answer 1

Via PushAll or Pushover .