In Intuity mode if you add a "Get Mail" action with specific set to "Callers Mailbox" to the default collect start point you will not need to enter the mailbox number. If the source number is set correctly no PIN is required either.
“Some humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH', the paint wouldn't even have time to dry.”
Terry Pratchet