Email send details
    Delivery status
    Recipient interactions (opens, clicks)
    Bounces
    Unsubscribes
How to Implement Logging?
Many email marketing platforms offer logging features. Make sure to enable these and regularly review the logs. For more advanced needs, consider integrating with a 
third-party logging service like AWS CloudWatch or Splunk.
How to Use Logged Data?
Use the logged data to identify patterns and trends. For example, if you notice a high bounce rate, you might need to clean your email list. If certain 
content receives more clicks, consider using similar content in future campaigns.
Best Practices for Monitoring and Logging
Here are some best practices to follow:    Regularly review your metrics and logs.
    Set up alerts for critical issues like high bounce rates or low open rates.
    Ensure your logging complies with 
data protection regulations.
    Use the insights gained to continuously improve your email marketing strategy.