Can I run MS Office 365 for Windows (Outlook specifically) on my Mac?

I need to utilize an Outlook 2013 for Windows feature not available on the Mac 2011 version. Specifically, I need to download messages from Dropbox and open and save them with attachment in native .msg format.

Has anyone had any experience running Windows Office 365 (on Windows 7 or 8) through VM Fusion?  I'm on MacBook Pro running 10.7.5. Potential client is very specific about this feature and it's a non-negotiable.

Thanks, Suzanne