Outlook 2011...sync PST files between Macs?

All,

I'm looking for a solution that will sync my Outlook 2011 email and pst files between my laptop and iMac, so that both machines have identical files/folders/emails,etc...

For example, let's say I leave town for a week and receive/send/download a ton of emails in Outlook 2011 on my MBP. When I return home, I would like a simple "email sync" solution that will create a mirror image on my iMac so that everything I did on the road on MBP is now also located in my iMac...

Are there any simple programs I can buy that will do this? I found one for Windows of course, but not Mac.