The best way to do this would be to sign up for our Hosted Microsoft Exchange service. This service will allow you to sync all your data associated with your email account. This includes messages, contacts and calendar information.
A second option would be to set your e-mail client to “Leave a copy of messages on the server”. This setting can be found under the “Advanced Settings” in Windows Live Mail and Outlook Express and in Mac Mail under the “Advanced” tab.
If you have any questions please contact a member of the Technical Support Team to assist you.