What is the default publication list when sending to data extensions?

The All Subscribers List serves as the default publication list in Salesforce Marketing Cloud when sending emails to subscribers in data extensions. This list is crucial because it contains all email addresses that a marketer has collected, regardless of specific audience segments or criteria. When an email is sent, if the subscribers are not specifically assigned to a different publication list, they will automatically fall back to this comprehensive list.

The concept of the All Subscribers List is essential for managing overall subscriber engagement and ensuring compliance with subscriber preferences and consent. Utilizing the All Subscribers List as the default helps streamline the process of managing communications, making it easier to oversee who receives what messages based on their subscription status.

In contrast, the Group List and the Publication List are specific ways to segment audiences for targeted communications but do not function as default settings for data extension sends. None of the above is also not accurate since the All Subscribers List is indeed the recognized default. Understanding this structure allows marketers to effectively utilize email campaigns while adhering to subscriber management best practices.