[Mailman-Users] Email commands for administrators

[fliggle at pobox.com]

Is there any way for a list administrator can subscribe/unsubscribe 
users via an email command?  I would also like to be able to set/clear 
the "no mail" flag.

Background:  I administrate several lists and maintain an Excel 
spreadsheet that contains membership data.  Some folks are members of 
several lists.  I use a macro to add or remove users, change their email 
addresses, etc.  I would like to modify the macro to send email commands 
to mailman.  This way I could, for example, change a person's email 
address in one location and all lists of which they are a member could 
be updated automatically.  For various reasons, I do not want to send 
emails to mailman using the member's "from" address

If no email command exists for the administrator to do this, is there 
another way to accomplish the same result?

I could not find anything about this in the documentation.  I get "page 
not found" when I click on the archive link.

Many thanks for any help.