Howdy. I have a friend who has about 1600 contacts in two different
categories. Contacts have to belong to one or both categories. Some of
the contacts do not have email addresses, that field is left blank (no
dummy addresses).

We want to be able to email only the contacts who have email addresses
in one or the other category. But we are having difficulty selecting
just those contacts in one category that have an email addy listed.
When we try to sort by email address (so the contacts with no address
filter to the top), it does it for both categories and basically
'mashes' contacts from both categories together, we lose the category
separation.

Make sense? Clear as mud?

Can anyone give me a hand with this?

TIA.