Notify for any variant restock

Use this guide if you want a customer who signed up for one variant to get notified when any variant of the same product restocks, not just the exact one they picked. By the end, waiting signups on the products you choose will get an alert whenever any variant of that product comes back in stock.

Before you begin

Turning on any-variant notifications requires a paid plan. On a free plan, the option is disabled with an Upgrade link instead of a toggle.

Choose your setup

Any-variant alerts make sense when your variants aren't a strict substitute the customer cares about, for example:

• One-size or one-material products where the "variant" is really just a SKU/location technicality, not a meaningful choice (e.g., a scarf sold as one size but tracked as several near-identical option values).
• Restock-adjacent options like packaging or bundle variants, where a customer who signed up would likely be satisfied by any of them coming back.
• Low-variant-count products where getting an alert a little early (for a similar option) is better than the customer missing the restock window entirely.

It's a worse fit for products where variants are a real choice the customer cares about: a T-shirt in size Small isn't a substitute for size XL, and a red version isn't what someone who wanted blue was waiting for.

You also choose which products any-variant notifications apply to:

• All products: applies to every product in your store.
• Selected products only: pick specific products from a product picker.

Any product not covered by your choice keeps the default behavior: a signup is only notified when the exact variant it signed up for restocks.

What customers will see

Customers don't see anything different on the signup form itself; they still sign up for the specific variant they're viewing. The difference shows up later: for a product covered by any-variant notifications, when any variant of that product restocks, all of its waiting signups can be notified, not only the signup's original variant. The notification content isn't customized to call this out, so from the customer's side it just looks like "the product is back."

Set it up

Check your setup

Reopen Back in stock alerts → Settings → Delivery settings and confirm the card shows Notify when any product option is restocked turned on, with your chosen product scope, All products or your selected list. If you chose Selected products only, confirm the products you want covered are in the list. The setting takes effect on the next restock: a waiting signup on a covered product should get an alert when any variant of that product comes back in stock, not just the exact variant they picked.

Troubleshooting

FAQ

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