Most of your email is probably for fun and from family. However, sometimes important information is stored in your email.
My parents computer is on its last leg and are concerned about getting some of their email messages copied over to their new computer. The right software can make this easy. And when that software is FREE, it's even better.Take a look at MailStore can backup numerous email software including Outlook, Outlook Express, Thunderbird, and Webmail such as Gmail and Yahoo. Backups can be saved to CD or USB and then restored with a click of the mouse.
Check it out at http://www.mailstore.com/en/mailstore-home.aspx