Last updated: October 13, 2026
Three7 DFS (“we”, “us”) runs three7dfs.com and our NFL and MLB DFS tools. This page explains what information we collect, why, and the choices you have. If you have a question, email us at support@three7dfs.com.
Your email address. If you sign in or subscribe, we collect your email address. You sign in with a link or code sent to that email; there’s no password.
Subscription and payment details. If you subscribe to Premium, payments are handled by Stripe. Stripe collects your card details and billing information (such as your ZIP or postal code). We never see or store your full card number. From Stripe we see your email, your subscription status (for example, trialing, active or cancelled) and your payment history.
Your saved settings and lineups. If you’re a Premium member, the NFL tool saves your optimizer settings (such as lineup counts, exposures, removed or locked players and projections you’ve edited) and any lineups you choose to save, so they’re there when you come back. They’re linked to your account, and other members can’t see them.
Your saved settings and lineups are encrypted. Our app encrypts them (AES-256) before they’re stored, including the names you give your saved lineups, so they’re unreadable in our database, even to someone browsing it. Lineups are created on our servers when you build them, but we don’t keep a record of them unless you choose to save them.
Our promise: we play DFS ourselves, so we built it this way on purpose. We never view your saved settings or lineups unless you ask us to for support, we never use member data for our own contest entries, and we never share or sell it.
Basic technical information. Like most websites, our hosting providers automatically record standard technical information when you visit, such as your IP address, browser type and the pages you open. We use it to keep the tools running and secure.
Information stored in your browser. When you sign in, our NFL tool saves a sign-in token in your browser so you stay signed in on that device. We don’t use advertising cookies.
We don’t collect your DraftKings or FanDuel account details, and we don’t need them.
We don’t sell your information. We share it only with the companies that help us run Three7 DFS, and only for that purpose:
| Service | What it does for us |
|---|---|
| Stripe | Processes payments and manages subscriptions |
| Supabase | Handles sign-in (stores your email and sign-in history) and stores your saved settings and lineups |
| Resend | Delivers our sign-in emails |
| Posit (shinyapps.io) | Hosts our NFL and MLB tools |
| GitHub Pages | Hosts this website |
We may also share information if the law requires it, or to protect our rights or the safety of others.
We keep your email and account information while you use Three7 DFS. Saved lineups stay until you delete them in the tool. If you ask us to delete your account, we’ll delete it from our sign-in system along with your saved settings and lineups. Stripe keeps payment records for as long as the law requires.
Three7 DFS is for people 18 and older, or the minimum age to play daily fantasy sports where you live if that’s higher. We don’t knowingly collect information from anyone younger.
If we make important changes, we’ll update the date at the top of this page.
Questions about this policy or your information: support@three7dfs.com