Privacy Policy

Last updated July 20, 2026

What we collect

Account: your email address, first and last name, and a password. Your password is handled entirely by Amazon Cognito; it is stored only as a cryptographic hash and we never see it.
League data: team names, weekly picks, message-board posts, and any dues contact details (such as a phone number or payment handle) a commissioner chooses to share with their league.
Invites: when a commissioner invites someone, we store that email address to send a single invitation and to recognize the invitee if they join. If they never join, the address is used for nothing else and is deleted on request.

What we use it for

Running your fantasy league: signing you in, showing leagues to their members, and sending league email (invitations and pick reminders, which your commissioner can turn off). That's it. We do not sell or rent personal information, and we do not use it for advertising.

Where it lives

All data is stored on Amazon Web Services in the United States (Amazon Cognito for accounts, DynamoDB for league data, SES for email). Traffic to the site is encrypted with HTTPS. NFL player statistics shown in the app are fetched from public sports APIs (Sleeper, ESPN) directly by your browser; no personal information is sent to them.

Who can see what

League content (team names, picks after reveal, posts, dues status) is visible to signed-in users of the site. Email addresses are used for login and league administration and are visible to your league's commissioner.

Access, correction, and deletion

You can delete your account and everything associated with it yourself at any time from the Account page (your email address in the top bar). You can also email privacy@3sumleague.com from your account address to request a copy of your data, a correction, or deletion. Emailed requests are honored within 30 days.

Cookies

We use only the storage necessary to keep you signed in (Amazon Cognito session tokens). There are no advertising or analytics trackers.

Children

3Sum League is not directed at children under 13, and accounts may not be created for them.

Changes

If this policy changes materially, we'll update this page and the date above.