Export your data: Begin by exporting your email list from your email service provider or CRM system. Clean your data: Use data cleaning tools to remove duplicates, correct errors, and fill in missing information. Validate email addresses: Employ email validation services to check the validity of your email addresses. Analyze engagement: Review engagement metrics to identify inactive subscribers and consider re-engagement campaigns or removing them from your list. Update segments: Ensure that your segments are still relevant and that subscribers are correctly categorized. Document findings: Keep a record of your audit process and findings for future reference and to track improvements over time.