There are several types of records that should be maintained:
Subscriber Lists: Keep detailed information about your subscribers, including their names, email addresses, and any other relevant demographic information. Campaign Performance: Track metrics such as open rates, click-through rates, and conversion rates. Email Content: Archive the content of sent emails for reference and analysis. Opt-Out Requests: Maintain a list of individuals who have unsubscribed to ensure compliance with anti-spam laws. Complaint Records: Keep track of any complaints or issues raised by recipients to address them promptly.