With OWA, you can use any Internet connection to read and send e-mail, organize contacts, create tasks, and manage your calendar. OWA does not offer all the functionality of Outlook but is a great way to check e-mail and do work away from the office. The key difference is you only can access e-mail stored on the server, including incoming messages. You do not have access to e-mail you have moved into Outlook's Personal Folders (or pst files), which are stored on your computer.