smuff2000,
If your ISP/email host/whatever you want to call it supports IMAP use that.
Believe me, you're only going to make a mess of it if you try to DIY it via some home-made bodge job.
IMAP is the way to go, its been around since the dark ages, been battle tested and is simple to setup .... setup IMAP account on PC1, setup IMAP account on PC2. Job done. Enable offline-caching if you want a local copy of your emails.
Take a tip from the world of corporate IT. If you can do it server side, do it server side.
Last edited by mixture; 27th Aug 2013 at 16:54.