Maintaining a healthy subscribers list involves regular cleaning and updating to ensure high engagement rates. Remove inactive subscribers who havenât engaged with your emails in a while; this can improve open and click-through rates. Segmenting your list based on subscriber preferences, behavior, and demographics can also enhance the relevance of your emails, leading to better engagement. Regularly testing different aspects of your emails, such as subject lines and content, can provide insights into what resonates with your audience.