To determine the effectiveness of your mass email campaigns, you need to track key metrics:
Open rate: The percentage of recipients who opened your email. Click-through rate (CTR): The percentage of recipients who clicked on a link within your email. Bounce rate: The percentage of emails that could not be delivered. Unsubscribe rate: The percentage of recipients who unsubscribed after receiving your email. Conversion rate: The percentage of recipients who completed a desired action, such as making a purchase.