Privacy Policy

Last updated 10 September 2026

This policy explains what personal data Sellerfuse collects when you use app.sellerfuse.com, our mobile apps and the Sellerfuse Sourcing Scout Chrome extension, why we collect it, who we share it with and the choices you have.

Who we are

Sellerfuse is run by SELLERFUSE LTD, a company registered in England and Wales (company number 16482751). Our registered office is 57 Ironstone Road, Burntwood, England, WS7 1LZ.

For anything about this policy or your data, email support@sellerfuse.com. We have not appointed a formal Data Protection Officer; our founder is responsible for data protection and reads every request sent to this address.

Our role

  • Controller. We decide how your account, login and billing details are used, so we are the controller of that data.
  • Processor. When you connect a marketplace or other account, the order, product and customer data we pull belongs to your business. We process it only on your behalf and on your instructions, to provide Sellerfuse to you.

What we collect

Your account

Your name, email address, password (stored only in hashed form), optional profile photo, team members you invite, your settings and preferences, and any messages you send to our support team.

Billing

Payments are handled by Stripe. We receive your Stripe customer reference, plan, subscription status and invoice history. We never see or store your full card number.

Accounts you connect

When you choose to connect them, we receive data from:

  • Amazon (through Amazon's Selling Partner API): your seller ID and marketplaces, orders, products and listings, prices, inventory, shipments, fees, settlements, reimbursements and returns.
  • eBay: your orders, listings, fees and payouts.
  • Vinted: your sales, through the Chrome extension described below.
  • TikTok Shop, once you connect it: your shop's orders, products, inventory and finance data.
  • Xero and Google Sheets: access to the organisation or sheets you pick, so we can send your figures to them.
  • Keepa: the API key you give us, used to request product data from Keepa for you.
  • Discord: your Discord account ID and username, if you link Discord for community access and alerts.

To stay connected we store the access tokens these services issue to us. We never ask for your password for Amazon, eBay, TikTok Shop, Xero or Google.

Your customers' data

We collect as little about your buyers as we can. We deliberately do not pull buyer names from Amazon. For Amazon orders we keep the shipping city, postcode and country, which we use for delivery-area insights and to help you spot suspicious order patterns. For Vinted sales we keep the buyer's Vinted username. For eBay orders we keep the buyer details eBay includes with each order, which can include the buyer's username, name and delivery address. We use these only to show you your own orders.

Mobile apps

If you allow notifications in our iOS or Android app, we store a push notification token for your device, the platform (iOS or Android) and when the app last checked in. We use it only to send you the alerts you have switched on.

Usage, security and error data

  • Activity log. When you sign in or out, or create, change or delete records in Sellerfuse, we log what happened, when, and the IP address and browser details of the request. This helps us keep accounts secure and investigate problems.
  • Server logs. Our servers keep short-lived technical logs of requests and errors.
  • Error monitoring. We use Sentry to find and fix errors. When something goes wrong, Sentry receives technical details such as the page, the error and your browser type. Our server is set up not to send personal data such as IP addresses to Sentry.

Support access

To investigate a problem you have reported, authorised Sellerfuse staff can view your account as you see it. Only admin accounts can do this.

The Sourcing Scout Chrome extension

Sourcing Scout is a companion to your Sellerfuse account. It doesn't work on its own. Every feature requires you to be logged in to Sellerfuse, and the data it reads is only ever sent to your own Sellerfuse account.

Vinted sync

When you're logged in to Vinted in your browser, the extension reads your existing Vinted session (the CSRF token and cookies your browser is already sending Vinted) so Sellerfuse can sync your Vinted sales for you. This is sent to Sellerfuse only when you choose to connect the account, or, if you've turned on auto-sync, automatically while you're logged in to Vinted.

We never see your Vinted password. The extension only reads the session your browser already has open. It does not read or intercept anything you type into Vinted's login form.

Amazon product data

On Amazon product pages, the extension reads publicly visible page content (ASIN, price, category and similar) to show profit, ROI and fee estimates from your Sellerfuse account. This feature is currently limited to a small number of accounts while we finish testing it.

Signing in

The extension asks for your Sellerfuse email and password to sign you in, the same as the website. These are sent directly and securely to our own servers to issue you a login token, which is then stored in your browser to keep you signed in. We don't share this with anyone else.

What the extension doesn't do

  • It doesn't track your browsing outside the specific Amazon, Vinted and Sellerfuse pages it is built for.
  • It doesn't collect data from any site it isn't designed to work on.

Your login token and extension preferences are stored locally in your browser (in Chrome's extension storage) and removed if you log out or uninstall the extension. You can disconnect Vinted, turn off auto-sync, log out or uninstall at any time from the extension's Settings tab or Chrome's extensions page.

How we use your data

Under UK data protection law we must have a lawful basis for each use:

  • To provide Sellerfuse (syncing your accounts, calculating profit, repricing, reports, alerts and support): this is necessary to perform our contract with you.
  • To take payment and keep financial records: contract, and our legal obligations under UK tax and company law.
  • To keep Sellerfuse secure, prevent fraud and abuse (including stopping repeat free trials) and fix errors: our legitimate interest in running a safe, reliable service.
  • To improve Sellerfuse: our legitimate interest in understanding how features are used.
  • To send you service emails and notifications you have switched on: contract, or your consent where the law requires it. You can turn notifications off at any time.

We don't sell your data, and we don't share it with anyone for their own advertising.

Who we share it with

We use trusted providers to run Sellerfuse. They act on our instructions and may only use your data to provide their service to us:

  • Hetzner Online GmbH: hosts our application servers and database in Germany.
  • Amazon Web Services: background job queues and file storage.
  • Stripe: subscription billing and payments.
  • Sentry: error monitoring.
  • Microsoft 365: our company email, including support emails you send us.
  • Email delivery: a provider that sends our account and notification emails.
  • Cloudflare: delivers and protects our website, sellerfuse.com.
  • PromoteKit: runs our referral programme, so partners who refer customers to us can be credited.
  • Google Fonts: some of our pages load fonts from Google, which receives your IP address when they load.

Only when you choose to connect or use them, we also exchange data with:

  • Amazon, eBay, Vinted, TikTok Shop, Xero, Google, Keepa and Discord, as described above.
  • Google Firebase Cloud Messaging and Apple Push Notification service, to deliver mobile notifications.
  • Your own AI assistant, if you connect it through our AI connector. You authorise this yourself, it is read-only, and it only receives the data you ask it about. The AI provider's own privacy policy applies to what happens in your AI assistant.

We may also disclose data if the law requires it, to protect our rights or users' safety, or to a buyer of our business, who would have to respect this policy.

International transfers

Our main servers are in Germany. The UK recognises the European Economic Area as providing adequate protection, so no extra safeguards are needed there. Some of our providers are based in, or process data in, the United States or other countries. Where that happens, we rely on the safeguards UK law provides, such as the UK Extension to the EU-US Data Privacy Framework or the UK International Data Transfer Agreement or Addendum.

How we protect your data

  • All traffic to app.sellerfuse.com is encrypted with HTTPS.
  • Passwords are stored only as secure hashes, never in plain text.
  • You can switch on two-factor authentication in your profile settings.
  • Access to our servers and database is limited to authorised staff.
  • We protect the stored access tokens for your connected accounts and never ask for your marketplace passwords.

No system is perfectly secure. If a breach affects your personal data, we will tell you without undue delay and report it to the Information Commissioner's Office where the law requires.

How long we keep it

  • While your account is open, we keep your data so Sellerfuse keeps working.
  • When you ask us to delete your account, from your profile settings or by emailing us, we review the request and then permanently delete your account and team, disconnect your Amazon accounts and delete the Amazon data we hold for them, and remove your profile photo and API tokens. How to delete your account sets out both routes and what is removed.
  • Fraud prevention. After deletion we keep a small record (your email address, seller ID, Stripe customer reference and trial dates) so the same business can't take repeated free trials.
  • Billing records are kept for as long as UK tax law requires.
  • Server logs are deleted automatically after a short period.

Your rights

Under UK data protection law you can ask us to:

  • give you a copy of your personal data;
  • correct data that is wrong or incomplete;
  • delete your data;
  • restrict or object to how we use it, including where we rely on legitimate interests;
  • send your data to you or another provider in a portable format;
  • withdraw consent, where we rely on it.

Email support@sellerfuse.com. We will reply within one month. If you are unhappy with how we handle your data, you can complain to the Information Commissioner's Office at ico.org.uk/make-a-complaint.

Requests from your customers

If one of your buyers asks you to access, correct or delete their data, or a marketplace such as Amazon or TikTok Shop asks on their behalf, contact us and we will help you find, update or delete what we hold about them.

Cookies and similar technologies

  • Essential cookies keep you signed in, protect forms against forgery and remember a "stay signed in" choice. Sellerfuse can't work without them.
  • Referral cookies. If you arrive through a partner's referral link, PromoteKit's script and a promotekit_referral cookie (kept for 30 days) record the referral so the partner can be credited when you sign up. A sellerfuse_affiliate cookie may be used for the same purpose.
  • Local storage in your browser remembers display preferences such as light or dark mode and whether the sidebar is expanded.

You can block or delete cookies in your browser settings, but essential cookies are needed to sign in.

Children

Sellerfuse is a business tool and is not intended for anyone under 18. We don't knowingly collect data from children.

Changes to this policy

If we change this policy, we'll update the date at the top of this page. If a change significantly affects how we use your data, we'll also tell you by email or in the app before it takes effect.