WhatsApp Back in Stock Alerts for Shopify
Turn out-of-stock pages into a sales pipeline. Customers subscribe with one tap, and Whapi sends them a WhatsApp alert the instant a product is restocked. over 90% open rates. Fully automated. Built on the official WhatsApp Business API with zero markup on Meta fees.
From out of stock to sold out in four steps.
Whapi handles everything automatically. No manual work, no spreadsheets, no forgotten follow-ups.
Customer subscribes on the product page
When a product is out of stock, a "Notify Me via WhatsApp" button appears. The customer enters their phone number and they are subscribed instantly.
Product is restocked in Shopify
Whapi monitors your Shopify inventory in real time. The moment a product variant goes from zero to available, the alert workflow triggers automatically.
WhatsApp alert is sent instantly
Every subscribed customer receives a personalized WhatsApp message with the product name, image, and a direct link to purchase. Delivered through Meta's official API.
Customer purchases the product
With a over 90% open rate and a direct link to checkout, customers buy within minutes of being notified. Restocked products sell faster than ever before.
What your customers see
Your Store
online
Back in Stock!
Great news! The Wireless Bluetooth Headphones you wanted is back in stock. Limited quantity available, grab yours before it sells out!
Wireless Bluetooth Headphones
$79.99
11:45 AM
Why WhatsApp back in stock alerts outperform email.
Email back in stock notifications have abysmal open rates. WhatsApp changes the game for Shopify merchants who want to convert demand into revenue.
over 90% open rate vs 20% for email
WhatsApp messages are opened almost instantly. Email back in stock alerts often land in spam or promotions tabs and go unread for days. With Whapi, your restocked products are seen within minutes.
Instant notification, instant sales
Speed matters for restocked products. Whapi sends notifications the moment inventory is updated in Shopify. Customers get a direct link to the product and can purchase before it sells out again.
Fully automated, zero manual work
From the subscribe button to the restock notification, everything is handled automatically. Whapi monitors your inventory, sends messages, and clears the subscriber list after notification.
Variant-level tracking
Customers subscribe for specific sizes, colors, or other variants. They are only notified when the exact variant they want is back in stock, not when an unrelated variant is restocked.
Official API, low ban risk
Whapi uses Meta's official WhatsApp Business API. Your number has a very low risk of being banned, and messages are delivered reliably. No gray-market workarounds or unofficial methods.
Track demand and conversion
See how many customers subscribe for each product, how many alerts were sent, and how many converted to purchases. Use this data to make smarter restocking decisions.
1,000+ Shopify stores use Whapi to recover lost sales.
Back in stock alerts are one of the highest-converting automations available to Shopify merchants. With Whapi, you capture demand when products are unavailable and convert it the moment they return. No markup on Meta's conversation fees. Built for Shopify.
Average open rate for WhatsApp back in stock alerts, compared to roughly 20% for email.
Higher click-through rate than email back in stock notifications across Whapi merchants.
Average time from restock to purchase when customers are notified via WhatsApp.
Frequently Asked Questions
Ready to automate your WhatsApp?
Join 1,000+ Shopify stores using Whapi to boost sales and cut costs. Free plan available.