1. Data Accuracy: Ensure that your data is accurate and up-to-date. Regularly clean and update your email lists to avoid errors. 2. Double-Check Fields: Before sending out emails, double-check that all personalized fields are correctly populated. 3. Test Emails: Send test emails to ensure that personalization tokens are correctly working. 4. Use Reliable Tools: Invest in reliable email marketing tools that offer robust data management and personalization features.