How can I create a smart list of marketable leads on a given date in the past? For example, I want to know how many marketable leads I had on 1/1/16, 2/1/16, etc.
Kim, unfortunately this is not possible via a smart list without having put a date stamp in place when leads became or were no longer marketable and then querying that date field.
Perhaps there is a way to gather that information from Marketo if they have a record for the purposes of monitoring your database size.
Retrieving data ...