Plastic Math

Privacy policy

Updated November 8, 2026

Plastic Math ("we") runs plasticmath.com. This page explains what we collect and what we do with it.

What we collect

  • Your email address, if you sign up for the cheat sheet or the newsletter, along with the page you signed up on and the date.
  • Analytics. We use Google Analytics and Cloudflare Web Analytics to count visits and see which pages are useful. These record things like pages viewed, the site that sent you, your browser and device type, and an approximate location from your IP address. Google Analytics sets cookies.
  • Spam protection. Sign-up forms use Cloudflare Turnstile, which checks that a person, not a bot, is submitting the form.
  • What you type into the quick answers stays in your browser. The numbers you enter aren't sent to us.
  • Emails you send us, if you write to us.

How we use it

To send what you asked for (the cheat sheet, a short welcome series and a monthly email), to see which pages help people, to keep forms free of spam, and to answer you if you write. We don't sell or rent your information, and we don't share it with card issuers.

Who processes it for us

Cloudflare (hosting, the sign-up database, spam protection and analytics), Google (analytics) and Resend (sending email). Each handles the data only to provide its service to us.

Your choices

  • Every email has a one-click unsubscribe link.
  • To see, correct or delete the information we hold about you, email hello@plasticmath.com. We'll do it within 30 days. Depending on where you live (for example California), you may have further rights under state law, and we honor those requests the same way.
  • You can block analytics cookies in your browser settings, or with Google's opt-out add-on.

Kids

The site is for adults. We don't knowingly collect information from anyone under 16.

Keeping it safe and how long

Your email address stays on our list until you unsubscribe or ask us to delete it. We keep it in an access-controlled database and only for the purposes above.

Changes

If this policy changes, we'll update this page and the date above. If we ever start collecting new kinds of information (for example, from connected accounts), we'll say so here first and ask for your permission.

Contact

Plastic Math, 3737 Easton Market #1341, Columbus OH 43219 · hello@plasticmath.com