To export your list's subscribers:

1. Log into https://lists.illinois.edu.
2. Select your list from the menu on the left.
3. Click "Admin" from the menu on the left.
4. Click the "Manage Subscribers" tab.
5. Click "Dump". This will bring up a list of all subscribers' email addresses. You will then be able to print, save, or export this list to another program.

Note: The list owner determines if the list membership is visible to: public, members only, or owner only: Campus Mailing Lists, Visibility of the List

Details about managing users are available from the user guide: https://wiki.illinois.edu/wiki/display/Sympa62/Users