You may have a subscriber who subscribes to your newsletter and then unsubscribes. You could just let them go, or you could do this:
Neuromarketing is powerful, which is why us marketers need to be on the right side of ethics.
It's one thing to create a strategy to slow down distracted users. It's quite another to use tactics to manipulate.
Seen the Netflix documentary Fyre Festival? That's an example of unethical marketing.
Let's use marketing for good.