---
title: Shopify Back in Stock Trigger
description: The Back In Stock trigger lets shoppers subscribe to be notified when an out-of-stock product becomes available again. When inventory is replenished, TapOnIt automatically sends subscribers a notifica
---
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September 26, 2025
# Shopify Back in Stock Trigger
### What is the Back In Stock trigger?
The **Back In Stock** trigger lets shoppers subscribe to be notified when an out-of-stock product becomes available again. When inventory is replenished, TapOnIt automatically sends subscribers a notification so they can return and complete their purchase.
This feature helps you capture demand that would otherwise be lost, while creating a better experience for shoppers who don’t want to keep checking back for availability.
### **Key Features:**
- **Variant-Level Sign-Ups** – Customers can subscribe to the exact product variant they want.
- **Text Message Alerts** – Send SMS/MMS notifications to bring shoppers back the moment inventory is replenished.
- **Flexible Opt-In Options** – Choose whether sign-ups are only for “Back In Stock” alerts, or if shoppers should be fully opted into your text club.
### Table of Contents
- [How it works](https://help.taponit.com/shopify-back-in-stock-trigger#howitworks)
- [Why it's beneficial](https://help.taponit.com/shopify-back-in-stock-trigger#benefits)
- [How to set it up](https://help.taponit.com/shopify-back-in-stock-trigger#setup)
---
### How it works
1. A customer visits a product page and selects a variant that’s out of stock.
2. They click the **“Notify Me via SMS”** button.
3. They enter their phone number (and/or email) and get a confirmation message.
4. When the product is restocked, TapOnIt automatically sends them a text message.
5. The customer clicks through and completes their purchase.
You control how the opt-in is presented on your product page. When setting up Back In Stock, you can choose:
- **Back In Stock Only** – Shoppers are prompted just to sign up for the notification.
- **Back In Stock + Marketing** – Shoppers are prompted with the option to sign up for your marketing texts in addition to the Back In Stock alert.
---
### Why it’s beneficial
- **Recover lost sales** – Instead of losing a customer to another retailer, you can bring them back the moment inventory is available.
- **Capture demand insights** – Every notification sign-up gives you data about which products (and variants) are in high demand, helping with forecasting and restocking.
- **Improve the shopping experience** – Customers don’t have to check back repeatedly. They get the product they want, and you get the sale.
- **Flexible opt-in options** – Choose whether Back In Stock sign-ups are part of your ongoing marketing or just a one-time notification.
- **Seamless automation** – Once set up, everything runs automatically in the background, saving time while driving conversions.
---
### How to set it up in Shopify
1. In Shopify, go to **Online Store \> Themes**.
2. Click **Customize** on your active theme.
3. From the dropdown, select your **Default Product** page.
4. Click into the **Product Information** section.
5. Hover between blocks (we recommend placing Back In Stock under the **Buy Button**).
6. Click **Add Block \> Apps**.
7. Select **Back In Stock Notify**.
8. In the right-hand settings panel, choose your **Notification Mode**:
- **Fully Marketing** (opt into your text club + Back In Stock).
- **Single Notification** (only receive the Back In Stock alert).
9. Click **Save** to publish your changes. Now head to your **TapOnIt Admin** to:
- Set up the **opt-in flow** for Back In Stock sign-ups.
- Edit the **messages subscribers will receive** when items are available again under **Shopify** \> **Create Automation** \> **Back in Stock**
[View a full walkthrough on how to add back in stock to your Shopify Store](https://scribehow.com/viewer/Adding_the_TapOnIt_Back_In_Stock_Field_in_Shopify__fOsb6o6_SYm5sTi6gGsqBQ)
---
### Best practices
- Place the Back In Stock form **directly under the Buy Button** for best visibility.
- Keep your message copy short, clear, and urgent (e.g., *“It’s back! Don’t miss out on \[Product Name\]. Shop now before it sells out again.”*).
- Use Back In Stock sign-ups as a signal for **high-demand items** when planning future inventory.
- [Read more at TapOnIt – Shopify Automated Messages Guide](https://taponit.notion.site/Back-In-Stock-BIS-270d363992598096b119d6fe8d06b3b5)
---
💡 The Back In Stock trigger is one of the simplest and most effective ways to recover sales, grow your subscriber list, and create a better customer experience—all with zero extra work after setup.
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