Why didn't my back-in-stock flow send?

Common causes are a flow left in draft or turned off, a trigger not linked to inventory updates, or a variant restocked under a new listing. Checking requests against live stock shows which one applies.

How fast should I email after a restock?

As soon as stock is live. People who asked to be told are among your warmest shoppers, and the item can sell out again before they hear about it.

Can I use ChatGPT or Grok for this?

Yes. The prompt works with any assistant that can read your Klaviyo requests and Shopify inventory, through a connection or exported files. ChatGPT, Grok and Muse all work this way.

What if I have more requests than stock?

Email the people who asked first, or send in batches as stock allows. Telling everyone at once can lead to disappointed shoppers or oversold orders if inventory is tight.

All playbooks

Make more from every customer · Leak

Back-in-stock demand left waiting

210 people asked to hear when it's back. It's back. Nobody told them.

Back-in-stock requests go unanswered when the flow is off, in draft, or not tied to restocked items. Connect Klaviyo and Shopify to Claude and ask it to match every request to products now in stock, count waiting shoppers per product, and confirm whether they were emailed. Send the emails now and make the flow live.

1
Connect
- Klaviyo
- Shopify
2
Ask
List every back-in-stock request in Klaviyo for products that are now in stock in Shopify. How many people are waiting per product, and has anyone been emailed?
Paste this into Claude, ChatGPT, Codex or Cursor.
3
Act
Send the back-in-stock emails now and make sure the flow is live.

What it tends to findExample

210 people waited on a size that had been back for a week.

Watch out

None. Either they were emailed or they weren't.

Step by step

01Connect Klaviyo and Shopify to Claude read-only, through a connector or MCP server if available, or upload a back-in-stock request export and a Shopify inventory report.
02Run the prompt so Claude lists waiting shoppers for each product that is now in stock.
03Confirm in Klaviyo whether each group was emailed. There is no gray area here.
04Send the back-in-stock emails now, and check the flow is live and triggered by inventory changes.
05Re-run weekly, and after every restock.

Questions

Run these next

Every number on these pages is an illustrative example, not a result from a named store. Read-only access is enough for every check; make any change yourself.

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