SiteDelta checks for changes in your browser and not within some cloud service, so email notifications are not possible (or at least, notifications could only be sent while your browser is open, so I don't see a big benefit).
The page opened ("reloaded") when watching a page shows the page the way it is monitored (i.e. without JavaScript), and allows you to rename it or configure the relevant regions by clicking the down arrow on the right side of the notification bar.