Privacy and refunds

Last updated 2026-09-17

Who we are

Patient Funnel (페이션트퍼널) is a sole proprietorship registered in Seoul, Korea, operated by Suokjoon Moon. Address: 602 Yeongdong-daero, 6F z208, Gangnam-gu, Seoul 06083. Contact: patientsfunnel@gmail.com.

What we collect

We collect contact information when you request the free edition, buy the book or contact us.

The free preview. When you ask for the preview at /en/preview/, your email address is stored on our own servers (Patient Signal, operated by us) and used to send you the PDF, four practical notes over eight days, then a reader offer when available and fortnightly columns for about three months (up to 11 emails in total). Earlier signups that agreed to five emails are limited to that sequence. Every one of those emails carries a one-click unsubscribe link, and unsubscribing stops them immediately. Delivery is handled by Resend, our email provider.

Contacting us. If you email us about your practice or an optional manual AI visibility check, we use the information you provide to respond. Please do not send patient information. The signup form stores a hash of your IP address to limit repeated requests.

Buying the book. Checkout is handled by Gumroad, Inc., which processes your payment and stores your email under its own privacy policy. We receive your email address and order details in order to deliver the files, handle refunds, stop book sales emails, and send two short usage notes on days 3 and 14 after purchase. You can unsubscribe from those notes.

We do not sell your data. We use the delivery, payment and analytics providers described here for these purposes.

Your rights

You can ask us at any time to see, correct, or delete the data we hold about you, or to stop emails, by writing to patientsfunnel@gmail.com. Readers in the EU/UK have the rights set out in the GDPR/UK GDPR; readers in Australia the rights set out in the Privacy Act.

Refunds

The full book comes with a 30-day, no-questions-asked refund. Email patientsfunnel@gmail.com with your order number within 30 days of purchase and we refund the full amount through Gumroad.

Disclaimer

The book and this site provide general business information for clinic owners. Nothing here is legal, tax, accounting, regulatory, or clinical advice. Rules on advertising, patient reviews, patient data, staff scope of practice, and deposits differ by country; confirm the rules where you practice before acting. Figures and results described are the author's own or those of participants in his Korean program and are not a guarantee of any outcome.

Free edition and purchase measurement

When you request the free edition, we store your email, language, signup source and the email sequence you agreed to receive. We may also store campaign labels and a Google Analytics browser identifier, when available, to connect a later book purchase using the same email address with the original signup. We do not send your email address to Google Analytics. Checkout links identify whether they came from a page, an email or a PDF. You can unsubscribe from every email; contact us to request deletion.