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Last updated - March 2026

Cookie Policy

1. What are cookies

Cookies are small text files placed on your device when you visit a website. They help the website function correctly, remember your preferences, and provide information to the site owner about how the site is used.

2. How we use cookies

yellow3.io uses a minimal number of cookies. We do not use cookies for advertising or tracking across other websites.

This policy covers yellow3.io and the yellow3 DPP Buyer Platform at buyer.yellow3.io. Visiting the Buyer Platform without signing in sets no cookies at all; the authentication cookies below are set only once you sign in.

3. Cookies we use

Cookie Purpose Type Duration
__vercel_live_token Required for website hosting and deployment Necessary Session
sb-<project>-auth-token Keeps you signed in to the DPP Buyer Platform at buyer.yellow3.io. Set only after you sign in, and removed when you sign out. Necessary Session, renewed while in use
y3_acting_org Remembers which organisation you are acting in when your account belongs to more than one. Buyer Platform only, after sign-in. Necessary 1 year
__stripe_mid Fraud prevention during payment processing Necessary 1 year
__stripe_sid Payment session identification Necessary 30 minutes

4. Third-party cookies

When you make a payment through our website, Stripe may set cookies on your device to process the transaction securely and prevent fraud. These cookies are governed by Stripe's Privacy Policy.

5. Managing cookies

You can control and delete cookies through your browser settings. Most browsers allow you to:

  • See what cookies are stored and delete them individually
  • Block third-party cookies
  • Block cookies from specific sites
  • Block all cookies
  • Delete all cookies when you close the browser

Please note that blocking all cookies may affect the functionality of our website, particularly during the payment process.

6. Your consent

Every cookie listed above is strictly necessary: it is there to sign you in, to remember which organisation you are acting in, to process a payment, or to serve the site. Cookies of that kind do not require your consent, and we do not ask for it.

We set no analytics, advertising or cross-site tracking cookies. If that ever changes, nothing of the kind will be loaded until you have actively chosen to allow it – not by continuing to browse, not by scrolling, and not by closing a notice. Refusing will always be one click, in the same place and the same size as accepting.

You can review or change that choice at any time:

7. Contact

For questions about our use of cookies, email us.

See also our Privacy Policy and Terms of Service.

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