I maintain a mailing list to introduce new fans to my work and to let existing fans know about new books. Email addresses on my list will never be shared or sold. Each email contains an unsubscribe link. It's easy to get off the list if you're no longer interested.
Likewise, if you purchase anything in my online store, your information is safe. I will never share or sell your email address or physical address. No credit card data is stored on my website. My online store is hosted by Stripe.