Salesforce Exam Marketing Cloud Account Engagement Specialist Topic 5 Question 40 Discussion

You can use an automation rule to opt out prospects by changing their field value of 'Do Not Email' to 'true'. This will prevent them from receiving any email communication from you. You cannot use an automation rule to change the field value to 'Opt-out', since that is not a valid option for the 'Do Not Email' field. You also cannot use an automation rule to opt out prospects by changing any other field value, since the 'Do Not Email' field is the only one that controls the opt-out status of prospects. Reference: [Automation Rules], [Opt Out Prospects]