Question about Outlook Express

I am currently on an exchange server with work and use Outlook 2011.  I will no longer be with the company after tomorrow.   I want to delete my exchange account and e-mails from the server (so that nobody can't see them after I am gone), but I want to still be able to see them in Outlook when I use it through a pop account.  Is there a way to copy e-mails from an exchange account (using outlook) to a pop account (also using outlook).  In the end, I will want to delete my entire exchange account and files off of one computer but still be able to see all the e-mails and calendar content from that account in another account.  What's the best way to do that?