A campaign-level metric that measures the specific amount of revenue generated for every individual email successfully delivered to a recipient’s inbox. It provides a granular look at the efficiency of a single message or automated trigger.
EPE Formula
EPE is calculated by dividing the total revenue attributed to a campaign (typically via UTM tracking) by the number of emails successfully delivered to the audience.
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As privacy regulations and inbox providers make tracking “open rates” less reliable, EPE has emerged as a primary performance indicator. It bypasses vanity engagement data to focus on the actual economic impact of a send. Marketers use EPE to perform rigorous A/B testing on offers, subject lines, and design layouts. For example, if Campaign A has a high click rate but a low EPE, and Campaign B has a lower click rate but a higher EPE, Campaign B is the superior strategic choice because it drove higher-value actions.
