Maintaining an email list requires more than just growing its size, as quality can be equally important as quantity. Churn in the business and inactive subscribers can negatively impact deliverability and engagement, making it essential to keep your email list up to date. To achieve this, you can remove invalid and disengaged emails, make it easy for users to unsubscribe, automatically add new subscribers, use email tools that can automate audience segmentation, and leverage automation tools like Zapier to streamline your workflow. By implementing these strategies, you can increase engagement with your target audience, improve deliverability, and ultimately enhance the effectiveness of your email marketing efforts.