I'm trying to figure out which system field should I modify in order to prevent Marketing Cloud from sending future email to whoever did not activate their email (Double-opt-in).
In this scenario we're not using the default preference center or profile center but only custom data extensions. Is there a specific system field to be changed (perhaps the 'Status' field in the All Subscribers ?).
The idea is that by default the field is inactive and once the subscriber verifies the email for the first time, the system can start to send emails.
Thanks for any suggestion,