I would like to be able to sync the mail accounts and contents on my desktop with my laptop.  My primary interest is the mail, but contacts would be useful too.

I use Windows Live Mail on my desktop (OS Win 8) and on my laptop (OS Win7).  I normally do all my work on the desktop, but use the laptop when traveling.  My mail is primarily POP3 mail through my ISP, but I also have a separate POP3 mail account on a different server.  I download all messages to my hard drive.   [I do not care for web mail.] 

Before traveling, I would like to be able to sync all the messages (in all the accounts) on my desktop (at least the Inbox, Sent, and the many archive folders) with my laptop.  Then, when I return from a trip, do the reverse and sync those same Windows Live Mail folders with my desk top. 

Note:  I currently just have my laptop set to leave the messages on the server so I can download them to my desktop when I return from travel.  That works, but means I do not have access to archive messages on my desktop while traveling and have to re-download, read, and delete the messages I reviewed on the road.  In addition, I do not have a copy of the messages I sent from my laptop on my desktop.  Continuity is all out of whack.

Is there some reasonably easy method of doing this?  The two computers can communicate with each other over my home network.

Aside from the above, but related, my wife's mail is in Outlook Express on her desktop (OS XP) and I have her accounts on my laptop in Windows Live Mail so she can do her e-mail while we are traveling.  Is there any way to do the same with her mail as I asked above?  Her computer is also in our home network.

Thanks.