To measure the success of email marketing campaigns and ensure they are contributing to the desired ROI, track the following metrics:
Open Rate: The percentage of recipients who open the email. Click-Through Rate (CTR): The percentage of recipients who click on a link within the email. Conversion Rate: The percentage of recipients who complete a desired action, such as making a purchase. Bounce Rate: The percentage of emails that could not be delivered to the recipient's inbox. Unsubscribe Rate: The percentage of recipients who opt-out of receiving future emails.