[Mailman-Users] Mailman - version 2.0.13

[td]

Dear Python.org.
 
Our company uses Mailman version 2.0.13.
The GNU we use isn't Unix.
 
The problem I have with this software is that, you have to search
sometimes for a long time, to find the users in the lists, who wants to
unsubscribe.
This is a long and time-eating process. 
Is there a way to add a list of email address, which you can mass
unsubscribe out of the mailing??
 
I checked on the site, but I'm not really familiar with the mailman
program...
Or is it recommended to upgrade...and if so, does the existing mailing
come in danger ??
 
I hope you can help me with this issue...
 
Sincerely yours,
T.D.