Members of the department primarily use the campus WiscMail email service. It can be accessed with a web browser at https://email.wisc.edu/, and the settings managed at https://email.wisc.edu/account-admin/. All @chem.wisc.edu addresses are alternate names for the campus WiscMail inbox.
The department email lists are hosted on https://g-groups.wisc.edu/. You can visit this link to see which email lists to which you are subscribed, and manage your subscription.
Currently, the owner of every list is email@example.com. Some of the lists get automatically created by information in the LDAP directory, but most we manage manually.