Which of the following is NOT a method used to track the success of Marketo programs?

The correct response highlights that "Emails Sent" is not typically regarded as a direct method for tracking the success of Marketo programs. When evaluating the performance of marketing programs, metrics such as conversion rates, engagement scores, and attributed revenue are far more indicative of success than simply the quantity of emails sent. While knowing how many emails were dispatched can provide context or preliminary insight into a campaign's reach, it does not convey the effectiveness or return on investment (ROI) of that program.

On the other hand, dashboards aggregate key performance indicators (KPIs) and allow marketers to visualize program performance, while "Costs/Period Costs" helps analyze spending against returns. Tags serve to organize and filter programs for better analysis, giving contextual insight into effectiveness. Overall, to effectively measure the success of marketing efforts, a deeper examination of engagement and conversion-related metrics is essential, rendering "Emails Sent" less relevant in that context.