sK Address Check – Privacy Policy

Last updated: 3 October 2026

sK Address Check shows shoppers a clear message at checkout when the delivery address has a format problem that would cause trouble on a shipping label: a missing house number, a line that is too long, characters the carrier can't print, or a missing or malformed phone number. This policy explains what the app stores, what it reads, and what it never touches.

Shopper addresses

Your checks run as a Shopify Function inside Shopify's checkout. The Function receives the delivery address from Shopify, checks its format against the checks you turned on and returns a message if something needs fixing. Addresses are never sent to our servers and never stored by us. The Function makes no network calls.

What the app stores

• Your store domain (for example your-store.myshopify.com).
• The offline access token Shopify issues at install.
• Your settings: which checks are on, the countries they apply to, the line length limit and your custom messages. A copy is also stored in your store, on the checkout rule itself, so checkout can read it.

What the app never accesses

• No customer records, orders or payment data. The app requests no customer, order or product access scope. Its only scope is write_validations, to add the checkout rule to your store.
• No storefront tracking. The app adds nothing to your online store.

Shopify’s mandatory privacy webhooks

• customers/data_request — the app holds no customer data, so there is nothing to return.
• customers/redact — the app holds no customer data, so there is nothing to delete.
• shop/redact — your store record and settings are deleted.

Where data is stored

Your store domain, access token and settings are held in a Postgres database hosted in the European Union (Frankfurt region). Data is transmitted over TLS.

How long data is kept

Your access token is deleted immediately when you uninstall the app. Your store record and settings are deleted when Shopify sends the shop/redact request, which happens 48 hours after uninstall.

Sub-processors

Provider	Purpose	Location
Shopify	App platform	Global
Neon	Postgres database	EU (Frankfurt)
Vercel	Application hosting	EU

No other party receives any data.

Changes to this policy

If this policy changes in a way that affects what we store, we will update the date at the top of this page.

Contact

Questions about this policy: info@saitkatmerlikaya.com