Privacy Policy

Overview

This Privacy Policy describes how James R. Holbein and Justin Holbein (“we,” “us”) collect, use, and disclose your information when you visit our website or purchase our book.

Information We Collect

Email signups. When you join our mailing list, we collect the email address you provide.

Purchases. When you buy the book through Gumroad or Amazon, those platforms collect your payment and delivery information directly. We receive transaction confirmations and the email address associated with your purchase so we can deliver the book and provide support.

Analytics. We use Vercel Analytics, which captures anonymized, aggregated traffic data without cookies or personal identifiers.

How We Use Your Information

• To send launch notifications, book updates, and occasional related communications.
• To deliver the book you purchased and provide support.
• To improve our website, content, and reader experience.

Third-Party Services

We rely on the following processors to operate this site:

• Gumroad — payment processing and digital delivery
• Amazon — Kindle and paperback distribution
• Kit (formerly ConvertKit) — email list management and delivery
• Neon — database hosting for subscriber records
• Vercel — website hosting and privacy-respecting analytics

Each maintains its own privacy policy governing how it handles your data.

Your Rights

You may unsubscribe from our emails at any time using the link in every message. You may request access, correction, or deletion of your personal data by contacting us at the address below. Residents of California, the European Union, the United Kingdom, and other jurisdictions have additional rights under applicable law, including the right to lodge a complaint with a supervisory authority.

Children

This site is not directed to children under 13, and we do not knowingly collect personal information from them. If you believe a child has provided us with personal information, please contact us so we can remove it.

Changes to This Policy

We may update this policy as our practices evolve. The “Last updated” date above reflects the most recent revision.

Contact

Questions about this Privacy Policy may be sent to 0xsardius@gmail.com.