I need to create a segment that I can use to send to contacts in List A who are not also in List B. I can’t find any step by step instructions for this or figure out how to do it.
List A - is a list of ALL my customers and is automatically added to by Shopify Integration.
List B - is a subset of list A. I created it on another system and imported them to list B. The subset was created using my own database to filter out this subset in ways that ActiveCampaign does support.
I want to send a campaign ONLY to users in A who are NOT in B? Any help here is most appreciated.