The answer to this question can be completely dependent on your experience, for example, you can say that:
Sample: “Yes, in my current company, email marketing is a prominent strategy to deploy. While shooting an email campaign, we keep track of essential metrics like email open rate, click-through rate (CTR), conversion rate, bounce rate, the total number of unsubscribes, and email sharing rate. Based on these elements, we execute A/B testing to maximize the overall conversion rates. Also, from time to time, we keep identifying the pattern like time of sending emails, which type of subject line improves open rates, which campaigns didn’t perform well, etc. All these patterns help us to take a clear marketing call.”