Updated July 2026. Figures based on 11.2 million back-in-stock requests followed for 90 days each, July 2025 – March 2026 cohorts.

In the world of online retail, the “Notify Me When Available” button has become a helpful tool for customers waiting on out-of-stock items. This feature promises convenience by alerting customers the moment a product is restocked. But what happens when a product will never come back? This is the problem of orphan products — items that frustrate customers and quietly leak sales.

What Are Orphan Products?

Orphan products are items in an online store that, despite having the “Notify Me” option, will never come back in stock. The store owners have either discontinued these products or do not plan to restock them, leaving customers unknowingly waiting for a product that may never return.

The Scale of Lost Demand

Insights

• Nearly half of demand goes unanswered: 46% of back-in-stock requests never get a restock within 90 days. Of the 11.2 million requests we tracked, more than 5 million were still waiting when the window closed.
• The cost is measurable: Restocked-and-alerted requests convert at 11.8% with an average order of $162. At those rates, every 1,000 orphaned requests works out to roughly $19,000 in lost sales.
• It adds up quietly: Orphaned requests don’t show up in any report by default. The shopper just never hears back, and the demand quietly expires.

What this means. Go through your waitlist for products you know aren’t coming back: discontinued items, seasonal one-offs, dead variants. Every request sitting on them is real purchase intent pointed at a dead end.

Solving the Orphan Product Problem: Variant Transfer

To deal with orphan products, Notify Me! offers Variant Transfer. When a product becomes an orphan — meaning it won’t be restocked — you can reach the customers who requested it by personalized email or SMS and offer an alternative from your live inventory. Instead of leaving people waiting for something that may never come back, you point their intent toward a product you can actually sell. For example:

Email example. Subject: {{product_name}} is available now! — “Because so many people wanted {{original_product_name}}, we’re unfortunately not able to restock it. We’d suggest the newest addition to our collection, {{product_name}}.”

SMS example. “Sorry, we won’t be restocking {{original_product_name}}. Take a look at our latest product, {{product_name}}.”

And keep the basket effect in mind: shoppers who click through an alert spend more than a third of their order value on items beyond the one they came for. Even when the substitute isn’t a perfect match, the visit itself is worth something.

The bottom line. Orphan products are the silent leak in back-in-stock programs: demand shows up, waits, and expires without anyone noticing. Flag the products that won’t return, move the waitlist onto live alternatives, and the 46% of requests that would otherwise go unanswered turn into the cheapest remarketing audience you own.