Some email platforms place limits on affiliate marketing because many users in the past abused email systems with spam promotions. Spam means sending unwanted sales emails to people who never asked for them. When too many complaints appear from subscribers email companies protect their servers and reputation by blocking accounts that mainly send direct affiliate links. Platforms prefer marketers who build real lists and share useful information before promoting products. In many cases this rule pushes marketers to focus on value first. Why do these rules still cause debate?