How can I set up a "Back-in-Stock" notification without external apps in Shopify?

[Leon09]

Hello Shopify Community,

I would like to offer my customers the ability to sign up for a notification when a product they're interested in is back in stock.
I'm currently using Shopify Flow, but I'm unsure how to set it up to notify customers when a product is available again without using external apps.

• I've already added a form where customers can enter their email address and the product they are interested in.

• Now, I need a solution where Shopify automatically sends the notification when the stock of the product is updated to "available".

Has anyone figured out how to do this without using external apps?

Thanks in advance!

[tim]

If you're using Shopify Forms, it's possible to fire a Flow when form submitted.
There you should be able to find the product, and add this user into a metafield list of users on this product.

Then when product inventory is positive again another Flow should fire, send e-mail to these users and remove the metafield.

Looks like doable without paid apps, however, I am sure there will be a lot of hiccups to work around.

[Leon09]

I'm not using Shopify Forms — I'm using a custom form built with the native Shopify 'contact' form type inside my theme.

[tim]

The difficult part is to connect all the parts. 

Forms apps allows to pass data further, contact form -- not really.

[Zel_Minimate]

Hi @Leon09 ,

If you're looking to automatically notify customers when a product is back in stock, it's worth noting that Shopify Flow has limitations when it comes to handling product- or variant-specific back-in-stock alerts. It doesn’t support waitlist logic or direct email notifications to customers who signed up for a specific product or variant.

That’s where our app, Mini: Restock Alert & Waitlist, comes in — and the good news is, it works seamlessly with Shopify Flow.

With Mini, you can:

• Add a customizable sign-up form directly on the product page (even at the variant level)

• Collect customer emails when items are out of stock

• Automatically send back-in-stock notifications via Shopify Flow

• See how many customers are waiting for a specific product or variant

• Easily manage waitlists and reports from within the app

It’s a powerful way to turn sold-out items into future sales without manual follow-up.

Let me know if you’d like a hand getting started!

Best regards,
Zel