Online privacy is essential for several reasons. Firstly, it helps to protect individuals from unauthorized access or misuse of their personal information. Secondly, it ensures compliance with privacy laws such as the General Data Protection Regulation (GDPR) and the CAN-SPAM Act. Non-compliance can result in hefty fines and legal repercussions. Lastly, respecting privacy encourages trust and loyalty among your subscribers, which can lead to higher engagement rates and better overall campaign performance.