Not excluded indeed, figured that out late but not too late. The lists are not public, but only visible within the organization. I think part of my concern is

Not excluded indeed, figured that out late but not too late. The lists are not public, but only visible within the organization. I think part of my concern is not knowing how easy it would be to rip a given set of messages out of the archive in Mailman. I don't expect it is likely Right to be Forgotten will be exercised, but it sounds to be a bear if it does get exercised.