I *JUST LEARNED* that recipients of emails I send can see the category(s) I
assigned to the email! This is freaking me out!

Imagine I am a psychologist. I create a category for each client. The
category formula is:

Last, First Condition First Visit Date

e.g.

Rodriguez, Alex DRUG ABUSE 4/1/2003
Baldwin, Alec ANGER MNGT 5/3/2006
Ryder, Winona KLEPTOMANIA 11/21/2003

Every time I make an appointment or task, I assign it to the client via the
Category in Outlook 2003.

BUT...If I send an email and want to assign a category, EVERY RECIPIENT SEES
the category(s) in the Keywords header. How do I NOT have this happen?!

e.g. if I send an email to a counseling list serve, but assign a category(s)
because it relates to a client, everyone will see the client's name,
condition,and when they started seeing me.

How to prevent this? Is there an answer?

I know that bcc's are not seen by others. How can one make 'Categories' like
that?