Editing the Mailman pages
You can change the look of public mailing list pages, which is extremely valuable if you want the general public to be able to locate and subscribe to a mailing list through your organization’s website or if you want to make the site consistent with a company intranet site. You can access the edit pages for a list from the Other Administrative task section in the upper right of a list’s administration page. There you can choose to edit the general information page as well as the pages displayed when a user subscribes to the list or modifies the list membership. These edit pages contain a large textbox with the HTML of the displayed page. You can edit them as you list, but take notice of the Mailman-specific tags (which all start with MM) that are used to populate information within the page.