Identify Inactive Subscribers: Determine which subscribers haven't engaged with your emails over a specific period. Validate Email Addresses: Use tools to verify the validity of email addresses and remove those that are invalid. Update Subscriber Information: Ensure that subscriber information is up-to-date and relevant. Segmentation: Segment your list based on subscriber behavior, preferences, and engagement levels to improve targeting. Remove Hard Bounces: Automatically remove email addresses that result in hard bounces to prevent future delivery issues.