Click on the Visitor tab.

You can see visitor data with Email id, location,  host name & how many total notificaiton impression, hovered & clicked happen during their web visit session. 

- You can search time duration specific data by click on today, Last 7 days & Custom date. Also,You can search or filter data by entering email id & hostname.

By clicking on "See history" button, You can see page visit history of that visitor. 

In this pop-up, You can see that visitor's engagement, impression, click & hover count of notification. Clicking on the count, you can filter the data. Its also showing page visit history & how visitors engages with notification on a specific page. You can see the notification name too so you can get the idea which notification actually giving more benefits.