You can improve your sender score in email marketing by following best practices. Maintain a clean email list by removing invalid addresses. Avoid sending emails to unengaged or inactive subscribers. Use double opt-ins to ensure your subscribers want your emails. Keep your email content relevant and valuable to your audience. Personalize your emails to increase engagement. Monitor bounce rates and fix any delivery issues. Stay consistent with your sending frequency to build trust. Ensure your emails are mobile-friendly for better user experience. Authenticate your domain with SPF and DKIM. Regularly check your sender score and address any issues promptly.