Privacy Policy

Updated 2026-07-19. This site collects as little as possible; here is the full picture.

Email subscriptions

When you subscribe to an email course or newsletter we store: your email address, the course subscribed, the page language, and the time of subscription. We use double opt-in: nothing is sent until you click the confirmation email. Delivery is handled by Resend (USA).

Every email carries two unsubscribe links — leave that course, or leave all emails — effective immediately, no login required. To have your record deleted entirely, write to [email protected] and we will remove your address from the database.

Analytics

We use PostHog and Google Analytics for anonymous usage statistics (page views, time on page, clicks) to improve the content. There are no user accounts, and no data is ever sold. The browser’s "continue exploring" feature uses only local localStorage; that data never leaves your device.

Affiliate links

Some outbound links are affiliate links (see the disclosure on the About page). Once you click through, the destination site’s own privacy policy applies.

Contact

Any privacy question: [email protected].