Which of the following is NOT a custom data point for targeting users?

The choice of a user's email as the correct answer is based on the fact that email addresses are typically considered standard identifiers rather than custom data points specifically created for targeting. Custom data points are unique categories or segments that organizations define to tailor user experiences or targeting strategies.

User types, such as "traveling as a couple," are custom classifications that help marketers create personalized messaging or offers. The date a user last received a campaign can also be a customized point used to optimize engagement strategies or manage user interactions more effectively. Similarly, tracking whether a user watched a specific promotional video can provide insights unique to that individual’s engagement and interests.

In contrast, an email address serves as a standard method of identifying and communicating with users rather than a tailored aspect derived from unique user behavior or segmentation.