Can I receive push notifications offline?

Question

Push technologies

Good afternoon.
Please tell me, is it possible to implement sending push notifications to a user on a mobile phone that is offline, and that he received them? Or they will accumulate and fall out only when online.
Thank you.

Answer 1

It is possible, if only when the user is offline you implement the delivery of push notifications via carrier pigeons.

Answer 2

It is possible if the message server and the site will be launched on the phone itself. But then it's easier to write a program on android, which will stupidly invent them to show.