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Low-stock & back-in-stock alerts

Two safety nets watch your stock: low-stock signals tell you a variant is running out, and back-in-stock alerts tell customers when something they wanted is buyable again.

Low stock: your signal

Set a per-variant threshold on the inventory list (see Stock levels & adjustments). When Available falls to or below it, the row flips to a Low stock badge, and your dashboard's inventory summary counts it — a running tally of in-stock / low-stock / out-of-stock rows. Restocking is just an adjustment with a positive amount.

Back in stock: your customers' signal

When a product is out of stock, your storefront can offer an "email me when it's back" form. A shopper who signs up gets a confirmation email right away (with a one-click unsubscribe link), and then waits on your list.

See who's waiting

Inventory → Stock Alerts lists every signup with the product, variant, email, and signup date. Filter by:

  • Pending (the default) — customers still waiting.
  • Sent — already notified, kept for history.
  • Unsubscribed — opted out before the restock.
  • All — everything.

The email sends itself

There's no "send" button — the moment stock comes back, waiting customers are emailed automatically. Specifically: when an adjustment (or a cancellation freeing reserved units) takes a product from Out of stock back to buyable — even if it lands in Low stock — every pending signup for it gets the back-in-stock email and moves to Sent.

Two details worth knowing:

  • One email per signup. A notified customer isn't emailed again on the next restock — they'd sign up again on the storefront if they want another alert.
  • Customers who unsubscribed are skipped, and every email carries its own one-click unsubscribe.

Who can do this

Any team member can view the Stock Alerts list. The back-in-stock emails are automatic — they fire whenever stock crosses back above zero. That usually comes from a manual stock adjustment (Owners, Admins, or Staff with the Inventory permission group; see Stock levels & adjustments), but cancelling an order also releases its reserved stock, so a teammate with order access (the Orders and fulfillment permission group) can trigger them that way too.

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