I want to trigger push.on('notification') method when I click on the notification when the application is not running, not even in background. Is it possible?
No. When the app is not running the OS handles the notification
But depending on the notification you send if will be handed off to the app when the app is started so you can handle it there.
How can I handle notification in this way?
Define please. My previous answer was quite clear I think.
How to handle the payload after the app is started after being closed..
Different topic, please start a new thread for that please and describe what you have already tried, what plugins you are using etc. Thanks.