By rendering a list “inactive,” it can remain in ML, but not appear as an option in the drop down menu when you Select a List before creating a mailing. The list is basically “hidden.” This is a good way to prevent a list that’s not frequently used from being accidentally selected and mailed to.
To make a list inactive, go to Accounts and click Manage Lists. Click Mark Inactive next to the list you’d like to make inactive.
To make a list active, go to Accounts and click Manage Lists. Click Mark Active next to the list you’d like to reactivate.