Last updated: October 2026
Clarke Index, Inc. ("Clarke", "we", "our", "us") is committed to protecting your privacy. This Privacy Policy explains what we collect, and why, when you visit clarkeindex.com or alpha.clarkeindex.com, sign in to the Clarke alpha, apply for access, or write to us.
1. Information we collect
Information you provide
- Your name, work email, company, role, and what you are tracking, when you apply for alpha access. We email you a link to confirm the address, and note when you open it.
- Your email address when you ask to receive updates, in the Stay current box or by ticking “Send me Clarke updates” when you apply. Either way, we email you a link to confirm the address first; once you confirm, it goes to our mailing service, Mailchimp, and you are on the list. To stop the box being used against someone else's address, we count requests from your connection for an hour under a scrambled form of your IP address, deleted after a day.
- Any information you send to us directly, by email or with the Feedback button
Your account and sign-ins
- Your account: your email address, and the name, company and role from your application.
- Each sign-in: when it happened, the kind of device (for example “Safari on iPhone”), your IP address and the country it maps to.
- A record of changes to your account: when it was approved, when you agreed to the Terms, signed in, signed out, or a session ended. Our team sees this record, and your application and the decision on it, in our own admin portal.
The sign-in codes and links we email you work once, for 10 minutes. We keep them only in a scrambled form that cannot be read back. Requests for a code and wrong codes are counted under a scrambled form of your email address or connection, and those counts are deleted after a day.
How you use the site
- The pages you view, what you click and how long you spend on each page. We may use this information to improve our product.
- For each page view, where the visit came from as our host, Cloudflare, places your connection: the country, the approximate state and city, and the name of the network (for example an internet provider, or a company's own network), with the kind of device (for example “Safari on iPhone”). We do not keep your IP address with these.
An application for alpha access is stored with the same connection details: IP address, country, and browser type.
Information kept in your own browser
- Your watchlist and your light or dark setting stay in your browser and are not sent to us. While you are signed in, your browser also keeps your email address so the pages can show who is signed in; signing out removes it. Clearing your browser's data for this site removes all of these.
We do NOT collect
- Sensitive personal information
- Payment information
- Biometric data
- Demographic data
- Your activity on other sites: we run no advertising or cross-site trackers and no third-party analytics
2. How we use your information
We use your information to:
- Review applications for alpha access and reply to them
- Give, manage, and withdraw access to the alpha
- Email you a sign-in code when you ask for one, and tell you if your account signs in on a new device
- Know who has used the alpha and for how long, and keep it secure
- Send the updates you asked for
- Improve the product
- Respond to inquiries
We do NOT sell your information or share it with advertisers.
3. Email communications
If you apply for alpha access, we email you to confirm your address, a note that your application is in, and the decision on it. With an account, you also get a sign-in code each time you ask for one, and a notice if your account is signed in on a new device. If you ask for updates, you may also receive:
- Product updates
- New Standards releases
- Clarke research notes or whitepapers
You can stop these at any time with the unsubscribe link in every update, by replying to any message, or by contacting us directly.
4. Third-party services
The site relies on these companies, each of which handles limited data on our behalf or receives a request from your browser, and each of which follows its own privacy policy:
- Cloudflare hosts the site and stores accounts, the sign-in record and applications. It handles your IP address in order to deliver pages.
- Mapbox draws the map. Your browser requests map images from Mapbox directly, which shows it your IP address.
- Google Fonts supplies the site's typeface. Your browser downloads it from Google directly.
- Mailchimp (Intuit) keeps the list of people who asked for updates and sends the updates, with an unsubscribe link in each.
- Resend sends the emails Clarke writes to you alone: the links to confirm your address, the note that your application is in and the decision on it, sign-in codes, new-device notices, and the welcome when you join the list.
- Our email provider carries the messages you send us and the ones we send you.
We do not use cookies for advertising or for tracking across sites. When you sign in, one cookie keeps you signed in: for up to 30 days on a device you ask us to remember (it ends after 14 days unused), otherwise until you close your browser and at most 12 hours; your account stays signed in on at most two devices at a time. A second cookie tells the site's open pages that you are signed in, so they can open profiles for you. Neither holds anything about you.
5. Data retention
We keep your account and its sign-in record while you have alpha access, and for 12 months after it ends. Information about how the site is used is kept for up to 12 months. We keep applications, approved or not, for 12 months after they are decided. Sign-in codes stop working after 10 minutes, and request counts are deleted after a day. Your email address for updates stays until you ask us to stop. You can ask us to delete any of these at any time.
6. Your rights
You may:
- Request deletion of your data
- Request a copy of your stored data
- Stop updates at any time
Contact: legal@clarkeindex.com
7. Security
We take reasonable measures to protect your information. No online system is perfectly secure, but we limit data collection to the minimum required.
8. Contact us
Clarke Index, Inc.
New York, NY
Email: legal@clarkeindex.com