I am trying to migrate a legacy mailing list to a new web forum software and was wondering if mailman has an export option or an API to get all lists, owners, members and membership types.
probably too late, but the list_members LISTNAME command (executed from a shell) will give you all the members of a list.
list_admins LISTNAME will give you the owners
What do you mean by membership type? list_members does have an option to filter on digest vs non-digest members. I don't think there's a way to get the moderation flag without writing a script for use with withlist
Does Mailman have an API or an export lists, users and owners option?