Open Rates: Indicates the percentage of recipients who open your emails. Click-Through Rates (CTR): Shows how many recipients clicked on the links within your email. Conversion Rates: Measures the number of recipients who completed a desired action, such as making a purchase. Unsubscribes: Reflects the number of recipients who opted out of your mailing list. Replies and Direct Feedback: Provides qualitative data that can offer deeper insights into customer preferences and concerns.