e-mail management

[Scott]

There needs to be a way to manage the e-mail addresses of people who
have e-mailed the group. Posted or not.
I use google groups like a list serve and it would be really
useful if it just kept a running list of people who have e-mailed the
group. There is no way to keep track of those people.
In order to e-mail all the people in a mass e-mail who are
interested in information I now have to look through the list of
people i've responded to (through the preview button) on my personal e-
mail address. Ask the other managers who mange my group (3 other
people) if they've previewed and or removed a post/e-mail, to send me
the missing e-mail addresses. I don't want to add the people who e-
mail the group to my personal contacts, and they didn't want to join
the group. I just want a way of organizing the contacts of people
who've communicated with my group.