My client would like the subscriber preference center to offer the option of choosing separate mailing lists, not just segments of one list. How would I set that up? I can't seem to find any documentation. Thanks for your help.
Actually, the preference center is list specific - meaning 1 list per preference center. This is why there is a separate link that you can add within a campaign to allow the recipient the ability to change preferences for that particular list. The best way to do this, as you have discovered, would be to have one list with segments. In this case, it sounds like that is not an option for your client. However, you may find it helpful to take a look at our blog post regarding converting to 1 segmented list: