Back-in-Stock Alerts for Shopify: An Honest Look at Notify Me!

If you want back-in-stock alerts for Shopify, the reason is usually simple: you already paid for the traffic that hit a sold-out product page, and right now that visitor leaves with nothing and you learn nothing. A restock alert turns that dead end into an email address and a queue of buyers waiting for the restock. Notify Me! is the tool we list for that job in our Marketing Partners directory, and this is an honest look at where it fits.

Disclosure: the tool links below are affiliate links. If you buy through one, we may earn a commission at no extra cost to you. Nobody paid for a place on this page or for a kinder write-up.

The problem: out-of-stock pages are paid traffic you throw away

Stockouts are not only a lost sale. They are a lost sale you have already spent money to create. The ad clicked, the SEO worked, the customer arrived — and the page said “sold out”. Worse, you have no record that the demand existed, so the next purchase order is guesswork again.

Two things fix that. First, capture the intent while the customer is still on the page. Second, contact them the moment stock lands, before they buy from somebody else. That is the whole product category, and it is one of the cheapest conversion repairs available to a small store. We cover the other common leaks in why website visitors don’t convert.

What Notify Me! actually does

Notify Me! adds a “Notify me” button to out-of-stock product and variant pages. A shopper leaves an email address, phone number or push subscription, and the app sends the alert automatically when you restock. Every request is logged in the app, so you can see which products and which variants people are actually waiting for.

Beyond plain restock alerts, the app bundles three related mechanics that small stores usually buy separately:

• Preorders — sell the item before it lands, with options for discounts, notes and partial payments.
• Wishlists — capture interest on products that are in stock but not being bought today.
• Low-stock urgency — a “only a few left” signal on the product page.

Alerts can go out by email, SMS, web push and WhatsApp. It integrates with the usual email platforms (Klaviyo, Mailchimp) and page builders, and it is built primarily for Shopify, with a BigCommerce version available as well. On the Shopify App Store it carries a 4.9 rating across roughly 3,700 reviews, with support speed the thing merchants mention most often.

What it costs

There is a free plan with small lifetime limits, then paid tiers starting around $9.90 per month (a discounted “Kickstarter” plan exists for eligible early-stage stores), with a mid tier near $39.90 per month and larger annual plans above that. Usage above your plan’s caps is billed per alert — roughly $0.20, dropping to about $0.15 on higher tiers — and SMS is priced per country on top. Billing runs through Shopify’s own invoice rather than a separate bill.

Those numbers moved during 2026 and vendors change plans without warning, so treat them as a ballpark and check the current pricing page before you budget. The part worth understanding is the shape of the pricing, not the exact number: a small subscription plus per-alert overages.

Who it fits

This is a good buy if you run Shopify or BigCommerce and you go out of stock more often than you would like — seasonal inventory, small production runs, single-supplier products, apparel sizes that sell through unevenly. It is also a fit if you want preorders without adding a second app and a second theme edit.

The math is easy to sanity-check before you install anything. Count how many sessions hit sold-out pages in a month in your analytics, assume a modest share leave an email, and assume a share of those buy on restock. If that number is not comfortably above $10 a month in margin, the app is not your bottleneck yet.

Who should skip it

Skip it if you rarely stock out. No amount of alert software creates demand; it only recaptures demand you are already losing. Skip it if you sell only on Amazon — this is a storefront app, and Amazon does not let you put a capture widget on a sold-out detail page. (If Amazon is your only channel and that limitation bothers you, that is exactly the argument in Why Not to Sell on Amazon.)

Two real downsides from independent reviews and merchant feedback. First, the plan limits are hard caps: hit the ceiling and the feature stops until the next cycle or an upgrade, which is the opposite of what you want during the restock rush that made you buy the app. Second, merchants report that preorder products cannot be included in site-wide Shopify discount campaigns such as Buy X Get Y, which causes confusion at checkout during a promotion. Reviewers also note the free plan is tight enough to be a demo rather than a plan, and that SMS costs add up quickly at volume.

How it compares to the alternative

The long-standing competitor is Back In Stock (Restock Alerts), which has been on Shopify since 2011 versus Notify Me!’s 2020. The practical difference is pricing model and scope. Back In Stock is flatter — entry around $19 per month with an unlimited top tier near $99 — and it does restock alerts as its main job. Notify Me! starts cheaper at $9.90 but bills overages per alert, and it covers restock plus preorder plus wishlist plus low-stock badges in one widget.

So: if restock alerts are all you need and your volume is spiky, a flat plan with an unlimited ceiling is easier to predict. If you want the four demand-capture mechanics without paying for four apps and editing your theme four times, the bundled option is the cheaper path. Either way, the decision is about predictability of spend, not features — both send the email fine.

FAQ

Do back-in-stock alerts actually recover sales?

They recover a share of demand you can already measure. Before you install anything, look at sessions landing on out-of-stock pages in your analytics; that number, not a vendor case study, is your ceiling. Anyone quoting you a fixed recovery percentage is guessing about your store.

Does Notify Me! work on BigCommerce as well as Shopify?

Yes. Shopify is the primary platform and gets features first; a BigCommerce app is also available. If you are on WooCommerce or a custom stack, look elsewhere.

Should I use preorders instead of restock alerts?

They solve different problems. A preorder takes the money now and commits you to a delivery date; an alert just holds the customer’s attention until stock arrives. Preorders are stronger when you are confident in the restock date, and a liability when you are not. Our Amazon Seller’s Pocket Guide covers the cash-flow side of committing to orders you have not received yet.

Notify Me! is listed with its plain “good fit / skip it if” line, alongside the other tools we recommend, in the Marketing Partners directory.