Outlook/End User Experience

OK, so I started at a job that is getting ready to implement sourceone for Exchange 2007. I am used to EV 8 with the virtual vault feature. That feature makes the archive look like Outlook. Basically it takes the shortcuts in your mailbox and makes them appear in the virtual vault folder as messages. It looks just like an email folder and sits in the view just like a pst file. And it works offline just like and OST file. Its the best feature as far as the end user experience is concerned. Does Sourceone have that feature or something similar? I cant find it. Thanks.