Data Protection: Marketing emails often contain sensitive information about customers and businesses. Effective security measures protect this data from being compromised. Reputation Management: A security breach can damage a brand's reputation and lead to loss of customer trust. Compliance: Many regulations, such as GDPR and CCPA, require businesses to safeguard customer data, including email information. Email Deliverability: Security measures help in maintaining high email deliverability rates by preventing emails from being marked as spam.