How to Add a “Notify Me” Button to Your Lightspeed Webshop

Why sold-out pages in Lightspeed leak revenue

A sold-out product page in Lightspeed does exactly one thing by default: it tells the visitor to leave. The add-to-cart button disappears or is disabled, and there is nothing else for an interested customer to do.

Most of those visitors will not come back on their own. They found the product through Google, a social post, or a price comparison — and the next shop selling something similar is one click away. Every day a popular product stays sold out without a signup option, demand quietly evaporates.

Your options for a notify-me button in Lightspeed

There are broadly three ways to let customers subscribe to sold-out products in a Lightspeed C-Series webshop:

• Edit your theme yourself — add a custom form to the product template, wire it to a mailing tool, and manually track which product each address belongs to. It works, but it's fragile, and every theme update can break it.
• Use a generic form builder — embed a contact form on product pages. Easy to add, but it doesn't know your stock levels, so every notification has to be sent by hand.
• Use a back-in-stock app — the app detects the sold-out state, shows the form automatically, and sends the notifications for you the moment stock returns.

Unless you enjoy maintaining custom theme code, the app route is the only one that stays accurate as your assortment and stock levels change.

How Restockly adds the button automatically

Restockly is built specifically for Lightspeed C-Series. After installation, its widget loads with your storefront and takes care of everything:

• It detects when a product or the selected variant is sold out, across standard and customized themes
• It renders a “Notify me” form exactly where your add-to-cart button normally sits
• When a customer switches variants, the form follows: it only shows for variants that are actually sold out
• Once you restock in your Lightspeed back office, a webhook fires and every subscriber is emailed automatically

Setting it up step by step

1. Install Restockly from the Lightspeed App Store (the listing is launching soon). The app connects to your store automatically — no code changes.
2. Open the dashboard and match the button and form to your brand: colors, button text, and field labels.
3. Edit the notification email template with the live preview. Placeholders fill in the product name, variant, and your shop details.
4. Done — the widget is live on every sold-out product page, in your shop's language.

Tips for getting more signups

• Keep the button label action-oriented: “Email me when it's back” beats a generic “Subscribe”
• Leave sold-out products visible in category pages and search — a hidden product collects no demand
• Cover sold-out variants too, not just fully sold-out products; size and color gaps are where most demand hides
• Watch your dashboard: products with long waiting lists are your clearest restock priorities

Related guides

• Back-in-stock notifications: the complete guide
• Back-in-stock email best practices & examples