Most Email problems are concerned with settings within your email program
Most likely Outlook Express
The most common problem with emails is pop server and user name and password.
If any of these settings have become corrupt, and they do from time to time, then you will not be able to receive or send emails.
The other biggest problem is
how to back up emails and your email address book.
Over the years i have witnessed the loss of thousands
and thousands of very important emails and email address books.
Not just from domestic users but also from my business clients aswell.
You are not the only one who hasnt backed up their important email.
But you have one advantage over those poor unfortunates you have us here at free computer advice to forwarn you.
If its important Back it up
Here is a link to ourOutlook Express Problems page.