Card Margin

What we store. Your email address and password (handled by our login provider, Supabase), the cards you add or import, and your fee settings. If you connect eBay, we store an encrypted access token and your eBay user ID and username, and we read your orders, payment fees and shipping label costs.

What we don’t store. We don’t keep your buyers’ names, addresses, emails or phone numbers, even when they appear in reports you upload. Payment card details are handled by Stripe and never touch our servers.

How it’s used. Only to show you your own profit and inventory. We don’t sell or share your data, and Card Margin can’t list, buy or change anything on your eBay account.

Deleting your data. Disconnect eBay anytime in Account settings to delete your eBay tokens. To delete your account and all your cards, email the address below. When eBay tells us an eBay account was closed, we delete the eBay data we hold for it.

Contact. cardmarginhelp@gmail.com