At AU we support a set of mass-distribution mailing lists in various subject areas, and most AU users are subscribed to at least three or four of them.
Subscribers can make changes in their list configurations using only a browser and a password.
You'll need your assigned password to complete your modifications. Fortunately for those of us with short memories, once a month all subscribers receive a message from the server containing the URLs for all the lists they're subscribed to, complete with the password for each one. So if you save the latest copy of this message, you'll always be able to get to your configuration pages. Your personal password can also be emailed to you from the configuration page. Once you're arrived at your configuration page, there are a variety of modifications you can make to your subscription.