With the recent GDPR regulations in mind, Postmark has implemented support for the Do Not Track (DNT) setting available in many web browsers to protect users' privacy when browsing their website. The DNT feature disables all third-party scripts that collect data about users visiting the site if it is enabled, including analytics and A/B testing services. Websites can detect and respect the DNT header by examining specific HTTP headers or using JavaScript APIs. Postmark has developed a plugin for Craft CMS to help detect Do Not Track preferences and display a callout in the footer to reassure users that their privacy settings are being respected. By enforcing DNT, websites can build trust with their users and raise awareness of user privacy.