This is a very vunerable position to put your email files in as they are no longer protected and easily accessible from the outside. In our company, we have Lotus Domino R6 and using the iNotes template on all mail files. Then we installed the product called Whale and configured it so that you could be at any internet kiosk or internet connection and gain access to your email in a totally secured environment. Even if you don’t choose this scenario, I would personally recommend keeping your mail files secured. Hope this helps.