CheckMate.bio - Showcase Project
Listed November 13, 2026
About CheckMate.bio
Who is behind this email address?
CheckMate.bio is a people search that takes an email address. It checks 2,500+ sites for an account registered to the address and for profiles under the same username, then groups the results by category. We kept the first step free. A search shows how many accounts turn up in each category and names three, up to three times a week, with no account. The full report is $0.99 once and adds names, photos, locations, bios and profile links. Each match has a confidence score, because a shared username is not proof. The site is a React app on Vercel. Checkout takes PayPal, Venmo, Apple Pay, Google Pay or a card and needs no registration. CheckMate.bio is not a consumer reporting agency. It is not for employment, housing, credit or insurance decisions.
Project details
Website: https://checkmate.bio