Synching email between clients. Is this possible?

[Wires]

My business' email address is akin to location@businessname.com and I have both my laptop and desktop configured to collect emails from this address. My desktop is running Outlook and my laptop Outlook Express.

I would like configure my settings so when I check my email on my laptop, that email will also be present on my desktop when I log on (and vice versa). Currently my messages are split between the two computers depending on which I used to log on at that time.

Just to complicate things...

I can configure gmail to collect emails from this address as well which would be great for when I'm on the road. Same problem - I want these emails to be visible on both the laptop and the desktop.

Is this even possible and if not is there an alternate solution? At the very least I would want all emails to be stored on the desktop regardless of where I initially received them.