1. Subscriber List: Regularly update your subscriber list to ensure it’s current and segmented according to various criteria like demographics, behavior, and preferences. 2. Email Templates: Maintain a library of email templates categorized by campaign type (e.g., promotional, transactional, newsletters). This will save time and ensure brand consistency. 3. Content Library: Keep a repository of images, videos, and copy that can be used across different campaigns. Ensure that all content adheres to your brand guidelines. 4. Tracking Tools: Inventory your analytics and tracking tools, such as Google Analytics, CRM systems, and email service provider metrics. Ensure all integrations are up to date. 5. Compliance Documentation: Keep records of consents, privacy policies, and any other legal documentation required to comply with regulations like GDPR or CAN-SPAM.