Deleting a page after viewing it

I have a confirmation of "membership" page a user would arrive at after clicking on a URL in an email. After they click on a link in this page I want to delete the page itself so it will only exist for this one use. The URL in the page does go to another "Welcome" page which is on another server. Do I need to include something in the second page that will do the deleting, or can I delete it from within the script for the first page that deletes as of the click on the URL. Haven't written any code yet for this, but I'm thinking "unlink." TIA, Paul