Yes, the mail you receive all goes into that file. They are appended to the end of the file as long as it exists, but you don't have to read them by catting that file, you can run the "mail" program to list the messages in it by number then just type the number to read that e-mail. To delete them you can type "d 1 (to delete e-mail #1) or d * (to delete all emails in the file)". There are also text-based e-mail readers "elm, pine, mutt" which should be on your distribution disks or you can download them in RPM format from
www.rpmfind.net.