There are several crucial metrics that should be monitored in email marketing:
Open Rate: The percentage of recipients who open your email. Click-Through Rate (CTR): The percentage of recipients who clicked on one or more links in your email. Conversion Rate: The percentage of recipients who completed a desired action after clicking on a link in your email. Bounce Rate: The percentage of your total emails sent that could not be delivered to the recipient's inbox. Unsubscribe Rate: The percentage of recipients who opted out of your email list after receiving an email.