Match the testing metric to the most relevant campaign objective.
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Correct answer: Open rates - deliver content, Conversion rate - boost sales, Click-throughs - drive traffic to a specific website, social media, story, etc., Total spend/average spend - maximize revenue, Clicks per unique open - effectiveness of CTA.
Why this is the answer
Open rates directly indicate how many recipients opened your email, showing if your content was delivered and compelling enough to view. Conversion rate measures how many recipients completed a desired action (like a purchase) after opening, directly correlating to sales. Click-throughs quantify how many recipients clicked on a link within your email, essential for driving traffic to external sites. Total spend/average spend metrics are financial indicators, directly tied to maximizing revenue. Clicks per unique open (CTO) measures the percentage of unique opens that resulted in a click, providing a more refined view of how effective your call to action (CTA) was for those who actually engaged with the email content.
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