Subscription process for the Push notifications works quite similarly to the regular newsletter subscription. Once the customers subscribe to Push popups only then you’ll be able to send them messages.
There are just two simple steps in the Push Notification subscription process.
In the first step, a subscription popup appear on the top of your customer’s browser.
If the user clicks Allow then a new window opens with final permission popup.In case customer clicks Don’t Allow then the subscription popup disappears and nothing happens after that.
When the customers click Allow on the final permission popup then they get subscribed and at this point it is highly recommended that you immediately send the Welcome Push message.