When the customer list is loaded for a campaign, and some of those customers in atom already have a typing or label that allows them to generate a warning as to whether or not the campaign should be sent to that customer and thus discard it.

Example: a customer who has not responded to a previous campaign is labeled as “not responding”, who, when reloading it, Atom notices that that customer has that label to know if I decide to move forward and send them a new campaign or not