Which of the following is a built-in way to subscribe a recipient to a service?

The correct answer is importing a list of subscribers using the import wizard. This method is a built-in functionality within Adobe Campaign that allows you to efficiently add or update multiple recipients in your database. The import wizard provides an interface to map fields from an external data source to the corresponding fields in the Adobe Campaign database, ensuring that the import process is streamlined and efficient.

Using this tool, you can manage subscriber data effectively, ensuring that they are correctly subscribed to the desired services. This serves businesses well when they want to make large-scale updates or additions to their subscriber lists quickly and accurately.

While other options may involve ways to interact with recipients or encourage subscriptions, they do not utilize the built-in subscription features of Adobe Campaign as directly or efficiently as the import wizard. The other methods might be effective in their own contexts, but they do not align with the specific built-in subscription functionality that Adobe Campaign offers for managing recipient data.