There are several metrics you can use to assess the health of your email list:
Open Rate: The percentage of recipients who open your emails. Click-Through Rate (CTR): The percentage of recipients who click on links within your emails. 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 your mailing list. Spam Complaint Rate: The percentage of recipients who mark your emails as spam.