Open Rates: The percentage of recipients who open the email. Click-Through Rates (CTR): The percentage of recipients who click on one or more links in the email. Bounce Rates: The percentage of emails that could not be delivered to the recipient's inbox. Unsubscribe Rates: The percentage of recipients who choose to unsubscribe from future emails. Conversion Rates: The percentage of recipients who take a desired action, such as making a purchase or filling out a form.