The Notify Views Integration submodule is a small module that simply tells the Views module about the Notify database so you can create listings of users by notify subscription status for export or administration.

There is no configuration page for this submodule. Too see it in action, create a view to show Users. You'll see that under Fields and Filter criteria there are additional options under the category Notify.

A typical use case is to to make a listing of node subscribers with names and email addresses and to be able to export that list using the Views Data Export module.