Why does user B have user A's email address and subject lines.

I have two users. User A is my account. It is an administrator account and I login to User A for every thing I do on my computer. User B is an user account that I use. I don't use it for much of any thing.

Today, I was looking at the file directories for user B. explorer to see what was in the directories. I found under the file directory Searches a file with the name, Everywhere. I clicked on that and there was a list of Outlook documents (I don't what type they are) that showed my emails addresses and files with the subject line of Outlook emails from Account A. User B has not used outlook.

Why would user B have the email and these files from user A? How is this keeping data from one user account protected from another user account?

If you need me to be clearer, ask away.

Thank you.

The problem has nothing to do with browsers and I don't believe it is an email problem. But I am not sure. My concern is that information from one users files are being stored under another users files.

Thanks