Privacy Policy
Last updated: 2 November 2026
The browser extension
The MarginMate extension does not collect, transmit or sell any personal data. It reads the price shown on the Amazon product page you are viewing, only to calculate profit, margin and ROI inside your browser.
Your settings (fee defaults, VAT status) and the buy costs you type are stored locally in your browser using the browser's extension storage. They never leave your device. The extension makes no network requests to our servers or any third party.
The extension does not use analytics, tracking, cookies or advertising.
The waitlist
If you join the waitlist on this website, we store the email address you provide and the page that referred you, using our form provider. We use it only to tell you when the beta opens and about MarginMate pricing. You can ask us to delete it at any time by replying to any email we send, and every email includes an unsubscribe link.
Changes
If a future version needs to process data differently (for example, syncing a watchlist across devices), we will update this page and ask for your consent in the extension before it happens.