Email tracking is crucial for several reasons. Firstly, it helps marketers measure the effectiveness of their campaigns. By understanding which emails are being opened and which links are being clicked, marketers can identify what content resonates with their audience. Secondly, it allows for real-time monitoring, enabling quick adjustments to improve engagement. Lastly, it provides valuable data that can be used to segment and target subscribers more effectively, ensuring that the right messages reach the right people at the right time.