Plugin of the Day · Tuesday 27 October 2026
Amp Back in Stock and Preorder: a notify button on sold-out shades at Kylie Cosmetics
Amp Back in Stock and Preorder is a Shopify app for back-in-stock alerts, preorders and low-stock badges. Its listing shows 4.9 out of 5 from 909 reviews and a free plan. On Kylie Cosmetics' sold-out product pages, a notify me button sits beside the quantity control.
The app, as its listing showed on 27 October 2026
- Rating: 4.9 out of 5 stars from 909 total reviews, on the app's listing in the Shopify App Store.
- Price: the listing says a free plan is available, along with a free trial.
- Badge: the listing carries the Built for Shopify badge.
- What it does, as the listing describes it: alerts sent by email, SMS and push when an item is back in stock, preorders for collections before they drop, low-stock badges, and buttons that replace "Out of Stock" with wording the merchant chooses.
The listing also claims alerts delivered across 25,000 brands. That is the developer's own figure, and we have not checked it.
Where we saw it working
- A sold-out shade with a notify button. The Winter Kissed Palette page on kyliecosmetics.com shows "out of stock" beside the product title, and "notify me" in the buy row beside a quantity control.
- The same state on a second product. The Winter Kissed Supple Kiss Lip Glaze page shows "out of stock" and "notify me" in the same place.
- The widget is loaded on the store. The page code loads a back-in-stock script from the app's own domain, with the store's name in the address. The button label and the sign-up lines sit in the same page code.
- In-stock pages show no notify button. We checked three shades that were in stock, and none showed the button, which is what we expected.
We believe the notify button comes from this widget, because the script and the button text sit together in the page code. We did not submit the form, so we have not confirmed it from the page alone.
What to check before you install it
- Look at a sold-out product as a shopper sees it, with the button label and where it sits on the page.
- Check which alert channels you can offer, email, text or push, and whether a shopper must opt in to each one.
- Read the reviews on the listing before you commit to a paid plan, since support is part of the experience they describe.
Where to look
The app is on its Shopify App Store listing, and the live store is kyliecosmetics.com. We read the listing and the product pages in a headless browser on 27 October 2026, without installing the app, submitting an email or contacting the developer or the store.