Improving engagement metrics involves a combination of strategies. Firstly, focus on personalization. Tailor your emails to the interests and preferences of your subscribers. Secondly, optimize your subject lines and preview text to increase open rates. Thirdly, ensure that your email content is valuable and relevant. Use compelling CTAs to encourage clicks. Also, segment your email list to deliver more targeted content. Finally, regularly clean your email list to remove inactive subscribers and reduce bounce rates.