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Everything you need to set up and run Preorders and Back in Stock alerts with STOQ. Pick a product to dive in, or jump to a popular guide below.

STOQ is a Shopify app. Preorders adds a Preorder button so you can sell a product before it is in stock, and take full payment or a deposit. Back in Stock adds a Notify me button to sold-out products, so shoppers can sign up and get an email or SMS when you restock. These guides show the exact steps in the STOQ app to install it, set up each feature, connect tools like Klaviyo and Shopify Flow, and fix common problems.

PreordersSell products before they're in stock. Take full payment or a deposit, and fulfill on your own schedule.

Back in StockAdd a Notify me button to sold-out products and alert customers by email or SMS the moment you restock.

Start here

New to STOQ? These steps get you from install to a working setup.

Getting startedWhat you see after installing, and how to finish onboarding.

Enable STOQ on your themeTurn on the app embed so the buttons appear on your storefront.

Test your setupRun a signup, restock, and alert end to end before you launch.

Set up preordersCreate your first offer and add products.

Set up back in stock alertsTurn on the Notify me button and your first alert.

Plans and billingLimits, overage, and what's free vs paid.

Popular topics

Send alerts through KlaviyoRoute back in stock and preorder notifications through your Klaviyo flows.

Preorder fulfillmentChoose how preorders are held and shipped: unfulfilled, scheduled, or on hold.

Reports and analyticsTrack demand, signups, notifications sent, and recovered sales.

Page buildersMake the buttons appear on GemPages and Pagefly pages.

AI assistants

Can I use STOQ with ChatGPT or Claude?

Yes. Add STOQ to Claude or ChatGPT as a custom connector, then sign in with your store. See Connect AI assistants to STOQ for the steps. Developers and agents can start from the AI block on the developer docs home.

What can an AI assistant do in my STOQ account?

It can answer questions from your live data, such as waitlists, preorder orders and demand reports, and make changes for you, such as updating a preorder offer. See what you can ask an assistant to do, or the AI block on the developer docs home for the technical side.

Is it safe?

You approve the connection by signing in with your store, and you choose when the assistant may read or change things in its tool permissions. Ask it to confirm before it changes anything, especially anything that charges a customer’s saved card. To disconnect every Claude and ChatGPT connection, reset the connector key: see Reset your connector key. More in Connect AI assistants to STOQ and the developer docs.

Browse everything

Use the tabs at the top of the page to see every guide grouped by topic:

• Preorders: offers, payment, fulfillment, notifications, and reporting.
• Back in Stock: the Notify me button, channels, delivery, and reports.
• General: install and themes, page builders, migration, and account help.

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Looking for the REST/GraphQL API, the MCP server, or the storefront SDK? Those live in the developer docs. Still stuck? Open the chat widget in the corner and our support team will help.