Back-in-Stock Alerts & Wishlists: A Better Way to Re-Engage Shopify Shoppers
Running out of stock is a normal part of eCommerce. A popular product can sell faster than expected, seasonal demand can increase suddenly, or supply chain delays can leave shoppers waiting.
The problem is what happens next.
When customers find their preferred product unavailable, many will simply leave the store and look somewhere else. Without a way to remind them when the product becomes available again, your business may lose a potential sale permanently.
This is where Shopify wishlists and back-in-stock alerts can work together.
A wishlist gives shoppers a way to save products they are interested in, while a back-in-stock alert gives them a reason to return when those products become available. Shopify wishlists give customers an easy way to save products they want to purchase later while helping stores capture ongoing purchase intent.
What Are Back-in-Stock Alerts?
A back-in-stock alert is a notification that informs customers when a product they wanted to purchase becomes available again.
For example, imagine a customer visits your Shopify store and finds a pair of shoes they like. Their preferred size is sold out, so they cannot complete the purchase.
Instead of leaving without taking any action, the customer can select “Notify Me When Available.”
Once the product or selected variant is restocked, the customer receives a notification and can return to the store to complete the purchase.
Depending on the Shopify app or setup, notifications may be delivered through channels such as:
- SMS
- Push notifications
- WhatsApp or other messaging channels
The exact options depend on the tools and integrations used by the store.
Why Combine Wishlists With Back-in-Stock Alerts?
A wishlist and a back-in-stock notification solve different problems.
A wishlist answers:
“Which products does this customer want to remember?”
A back-in-stock alert answers:
“When should we remind this customer to come back?”
When the two features work together, the customer journey becomes more useful.
For example:
Customer discovers product → Saves it to wishlist → Product goes out of stock → Product is restocked → Customer receives notification → Customer returns → Customer purchases
Without a notification, the customer may never know that the product is available again.
This combination is especially valuable for products with frequent stock fluctuations.
How Back-in-Stock Alerts Help Shopify Stores Re-Engage Shoppers
1. Recover Sales From Out-of-Stock Products
An out-of-stock product does not necessarily mean a lost customer. By allowing shoppers to request a notification, your store can reconnect with them when the product becomes available again. Instead of making customers repeatedly check your website, a timely alert lets them know when the product is back in stock and ready to purchase.
2. Bring Interested Shoppers Back
Not every website visitor is ready to buy immediately.
A customer who saves a product or requests a restock notification has already shown interest. Reaching this customer later can be more effective than trying to attract an entirely new visitor.
This makes back-in-stock alerts a useful re-engagement strategy.
3. Create a Better Customer Experience
Customers generally do not want to keep checking whether a sold-out product is available again.
A simple notification option removes that inconvenience.
Instead of saying only:
“Out of Stock”
a store can provide a more helpful option:
“Notify me when available.”
This small change can make the shopping experience feel more customer-focused.
4. Increase the Value of Your Wishlist
A wishlist becomes more useful when it does more than simply save products.
If customers can receive relevant notifications about saved products, the wishlist becomes an ongoing part of the shopping journey.
Wishlist vs. Back-in-Stock Alerts: What's the Difference?
Although they are often used together, these features have different purposes.
| Feature | Wishlist | Back-in-Stock Alert |
|---|---|---|
| Main purpose | Save products for later | Notify customers when inventory returns |
| Customer action | Saves an item | Requests a notification |
| Best for | Future purchase intent | Re-engaging shoppers after stockouts |
| Trigger | Customer saves product | Product becomes available |
| Primary benefit | Product discovery and consideration | Recovering potential sales |
The two features complement each other rather than replacing one another.
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