To gauge the effectiveness of your mass email campaigns, monitor these key metrics:
Open Rate: The percentage of recipients who open your email. Click-Through Rate (CTR): The percentage of recipients who click on a link within your email. Conversion Rate: The percentage of recipients who take the desired action, such as making a purchase. Bounce Rate: The percentage of emails that were not delivered. Unsubscribe Rate: The percentage of recipients who opt-out of future emails.