To measure the impact of redundancy, you should monitor key performance indicators (KPIs) such as:
Open Rates: A decline in open rates may indicate that your emails are becoming redundant and losing subscriber interest. Click-Through Rates (CTR): A drop in CTR can signal that your content is no longer engaging or relevant to your audience. Unsubscribe Rates: An increase in unsubscribe rates may suggest that subscribers are frustrated with repetitive content.
Regularly reviewing these metrics can help you identify and address redundancy issues promptly.