Open Rate: The percentage of recipients who open your email. A higher open rate often indicates a compelling subject line. Click-Through Rate (CTR): The percentage of recipients who clicked on one or more links in your email. This metric shows how engaging your content is. Conversion Rate: The percentage of recipients who took the desired action, such as making a purchase or filling out a form. Bounce Rate: The percentage of emails that could not be delivered. A high bounce rate could indicate issues with your email list quality. Unsubscribe Rate: The percentage of recipients who opt out of your email list. Monitoring this metric helps you understand if your content is resonating with your audience.