Mobile Notifications, how does it launch the Application?

Unity Engine
1

I’ve just started using the unity Mobile Notifications package.
https://docs.unity3d.com/Packages/com.unity.mobile.notifications@1.4/manual/index.html

I’m curious as to how it knows which application to open? Is it doing this via the bundle id?

2

It uses the activity class.
You can configure activity class in settings, otherwise Unity figures out the activity.