To gauge the effectiveness of email campaigns, several metrics related to viewers are crucial:
Open Rate - The percentage of viewers who open your email. Click-Through Rate (CTR) - The percentage of viewers who click on links within the email. Conversion Rate - The percentage of viewers who complete the 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 viewers who opt out of your email list.