Which functionality should a Marketing Cloud user utilize to retrieve the email addresses of unsubscribed users without SQL access?

The functionality that allows a Marketing Cloud user to retrieve the email addresses of unsubscribed users without requiring SQL access is found in the "My Tracking" feature. This option provides a user-friendly interface that allows users to view various engagement metrics and subscriber statuses, including unsubscribe information.

"My Tracking" focuses on presenting information related to email campaigns and includes insights into unsubscribe trends, making it a suitable choice for users looking to track the status of their subscribers easily. Users can access essential details about their subscriber lists, including those who have opted out, without needing to write any SQL queries, maintaining accessibility for those who may not have technical expertise.

In contrast, other options like "My Reports" and "Tracking Extract" are more geared towards broader report generation or data extraction tasks, which may not specifically cater to filtering out unsubscribed users without some technical manipulation. "Data Views" are designed for users who utilize SQL to directly query subscriber data and other records, which would not meet the requirement of not having SQL access.