Privacy, in plain language.

The waitlist is here to keep you informed about Fourier. Here’s what happens when you join.

What we collect

We save your email address, the time you signed up, and a record of your agreement to receive Fourier early-access and product updates. We also save a one-way fingerprint of your private signup-management token so you can remove your signup.

Why we collect it

We use your email to manage the waitlist, share product and launch updates, and invite you to early-access opportunities. We do not sell waitlist email addresses or use them for third-party advertising.

Where it lives

The website is hosted by Vercel. Signup records are stored in private Vercel Blob storage and are accessible to Fourier through authenticated services. The hosting provider may process normal request metadata, including IP addresses, for delivery and security. The website does not include advertising trackers or third-party analytics.

Your controls

After joining, your browser can remember a private management link. Use Manage your signup to save that link or remove your email from the waitlist. The link authorizes removal, so keep it private. Clearing browser storage removes the saved link from your device, but does not remove the signup itself. You can use a copy of your link on another device.

We keep your waitlist record until you remove it or the waitlist is retired. Any product-update email we send will include an unsubscribe option.

Local browser storage

We use local storage only to remember your signup-management link on this device. If browser storage is unavailable, signup still works and the private link is available on the success screen. We do not set marketing cookies.

Last updated 8 October 2026.