Where in a contact's record can you see which Engagement stream(s) that person is a member of? There is nothing available in the contact record. Looking at each Engagement program does not tell me who is NOT included in that program. Creating a list based on Member of Engagement Stream using either True or False gives me everyone or no one. Surely there is a way to do this. Thanks.
What you are able to do that Erica has talked about is create a field that you change the data value of whenever a person is added to an Engagement engine. This is what we do at Marketo. Anyone not in Engagement also gets a value that just says they are not "Opted In"
This way I can look at my database and see who is being nurtured and who is not.