Several key metrics define engagement in email marketing:
Open Rate: The percentage of recipients who open your email. Click-Through Rate (CTR): The percentage of recipients who click on links within your email. Conversion Rate: The percentage of recipients who complete a desired action after clicking a link in your email. Bounce Rate: The percentage of emails that are not successfully delivered to the recipient's inbox. Unsubscribe Rate: The percentage of recipients who opt-out of your email list after receiving an email.