Which action cannot be performed using the direct mail delivery editor?

The direct mail delivery editor in Adobe Campaign Classic is primarily designed for managing the logistics of the delivery process, including scheduling the delivery and selecting recipients. The action of editing the creative, however, is not performed directly within the delivery editor. Instead, creative elements such as the design and content must typically be created and edited in a separate module or area of the application before they are applied to the delivery.

In contrast, scheduling the delivery allows users to choose when their campaign will be sent to recipients, and selecting recipients is a fundamental part of the delivery process, enabling targeted marketing. Setting tracking parameters is essential for measuring the effectiveness of the campaign and can be configured in the delivery editor. Thus, editing the creative is the only action that cannot be conducted within the direct mail delivery editor itself, as it focuses on delivery management rather than content creation.