How tracker checking works
What "Check for trackers" actually does, and its real limits.
What we can't do
No website, including this one, can read the cookies another website has stored in your browser. That's a security boundary every browser enforces (the same-origin policy), not a limitation specific to ReclaimInbox. So this feature does not scan your machine or your browser's cookie jar.
What we actually check
When you click "Check for trackers" on a company, we fetch their public homepage server-side and look at the raw HTML for known third-party tracker and pixel URLs (analytics tags, ad networks, session-replay scripts, and similar). We check the company's registrable root domain (e.g. wellsfargo.com), not the exact address they emailed you from, since companies almost always send mail from a dedicated sending subdomain (like mail1.wellsfargo.com) that has no real website behind it. When that differs from the sender's address, we show which domain we actually checked. Matches are checked against a hand-curated list of roughly 50 well-known trackers, not a full crowdsourced database like Disconnect.me or DuckDuckGo's Tracker Radar, so treat the count as a floor, not a complete audit.
What this does and doesn't prove
Finding ad-network or analytics trackers on a company's site is circumstantial evidence toward "this company likely shares data with third parties," which is exactly what a do-not-sell request targets. It is not proof they sell your specific data, and a clean result doesn't prove they don't. We only fetch and read raw HTML, we never run JavaScript, so anything injected at runtime, anything behind a login, and anything in their mobile app is invisible to this check.
Why some checks fail
Many sites block automated requests, redirect unpredictably, or are just slow. We time out after 8 seconds. A failed check means we couldn't verify their homepage, not that no trackers exist.
What we store
The domain, company name, the list of trackers found, and when we checked. Scoped to your account only, same as everything else. See how we protect your data.
Actually clearing cookies
Your browser already has a built-in cookie manager that can list and delete cookies per site, something no website can do for you. Official instructions: Chrome, Firefox, Safari, and Edge.