The Privacy options section is broken up into four subsections, Subscription rules, Sender filters, Recipient filters, and Spam Filters.

Subscription Rules

The advertised option controls whether this list is displayed when someone visits

The subscribe_policy controls what steps are needed to subscribe. This is one of the seven pieces of information required on the new list request form.

The unsubscribe_policy option allows you to require moderator approval before someone may unsubscribe from a list.

The ban_list option allows you to ban specific email addresses from joining your list.

The private_roster options controls who may view the list of subscribers. The options are Anyone, List Members, or List Administrators. Anyone is not recommended.

The obscure_addresses option alters the appearance of email addresses on the list web pages. The address becomes myaddress at in the hopes of thwarting spammers.

Next Section - Privacy Options - Sender Filters.