These metrics give you a high-level overview of how your subscribers are interacting with your campaigns and allow you to compare the success of one campaign to another. If you want to go deeper and see the exact people who opened and clicked your campaign, what links they clicked, etc. you can do so by choosing some of the other reports from the right hand side menu.
When a subscriber is sorted into a segment, it can trigger an automation to send to them. Each person’s interactions with your email campaigns or your website can trigger a sequence of follow-up emails based on their interests, allowing you to hone your message to your targeted audience. For example, if someone visits your pricing page, you know they’re probably further down your sales funnel and will want to follow-up appropriately. Or if they went to a specific product page or clicked on a link for that product, you can send additional information about the product, testimonials and more.