Is there a software package that will download mails from several different accounts so that I can keep them on my main PC and still view them using Outlook on other PC's on my home network.

I currently download mails on Outlook to my desktop PC but I want to access those mails from a laptop as well. What I'm looking for is something like Microsoft Exchange but that's fairly easy to set up and maintain.
Outlook Express used to have an option that allowed you to keep mails on the server but it's not there anymore.

Thanks,
Shanny