LandinChat — WhatsApp marketing softwareLandinChat
WhatsApp Templates Knowledge Base

WhatsApp back-in-stock restock, wishlist & pre-order templates

Notify-me capture on the sold-out PDP, Utility-category restock alerts on inventory webhook, throttled sends to prevent overselling — Shopify and WooCommerce native.

  • Utility-category compliant
  • Auto-fire on inventory webhook
  • Throttled to prevent overselling

Key things to know

  • Notify-me PDP widget

    One-tap WhatsApp opt-in on every sold-out variant — captures number + SKU.

  • Inventory webhook listener

    Shopify / WooCommerce — fires the Utility template the moment stock returns.

  • Stock-aware throttle

    Release alerts in waves matched to current inventory — no overselling.

  • Per-variant capture

    Subscribe per size/color, not just per product — sends only when the right variant restocks.

People also ask

Q.Is a restock alert Marketing or Utility?

If the customer explicitly opted-in for THIS product (notify-me), it qualifies as a Utility template — cheaper and approved faster. Blast-to-list restocks are Marketing.

Q.How do customers opt-in for notify-me?

Add a 'Notify on WhatsApp' button to your sold-out PDP. LandinChat captures the number + product SKU and fires the template when stock returns.

Q.Can I auto-trigger from Shopify/WooCommerce?

Yes — the inventory webhook fires when stock returns. LandinChat dispatches the Utility template to everyone subscribed to that SKU.

Q.How do I prevent overselling?

Throttle the send — release the alert in waves of 20–50 per minute, gated by current stock level. LandinChat does this automatically.

Q.What CTR should I expect?

Notify-me restock alerts clear 70–85% CTR and 25–40% conversion — the highest-intent segment in ecommerce.

Q.Can I capture pre-orders for unreleased SKUs?

Yes — same Flow, but the Utility template confirms pre-order and charges via payment link or deep-link checkout.

75%
CTR on restocks
30%
Conversion rate
98%
Open rate
Utility
Cheaper category
Overview

Why notify-me restocks are the highest-ROI WhatsApp send

Customers who tap 'Notify me' on a sold-out PDP are pre-qualified — they wanted the product, they couldn't have it, they raised their hand. The conversion math beats every other ecommerce sequence.

Because the customer explicitly opted-in for that exact SKU, the restock alert qualifies as a Utility template — cheaper than Marketing and faster to approve.

LandinChat captures the number + SKU on the PDP widget, listens to the Shopify/WooCommerce inventory webhook, and dispatches the Utility template in throttled waves to prevent overselling.

Capabilities

Built for serious growth teams

Notify-me PDP widget

One-tap WhatsApp opt-in on every sold-out variant — captures number + SKU.

Inventory webhook listener

Shopify / WooCommerce — fires the Utility template the moment stock returns.

Stock-aware throttle

Release alerts in waves matched to current inventory — no overselling.

Per-variant capture

Subscribe per size/color, not just per product — sends only when the right variant restocks.

Pre-order template

Same Flow for unreleased SKUs — confirms pre-order with payment-link or deep-link checkout.

Wishlist sync

Sync Shopify, Yotpo and Klaviyo wishlists — broadcast restocks across all captured channels.

How it works

Get live in days, not months

  1. 1

    Install PDP widget

    Drop the LandinChat snippet into your Shopify / WooCommerce theme — appears on sold-out variants.

  2. 2

    Connect inventory webhook

    OAuth — LandinChat listens for stock-return events per SKU and variant.

  3. 3

    Pick Utility template

    Restock Alert, Pre-Order Confirm — choose from the library and submit for approval.

  4. 4

    Set throttle rules

    Cap sends per minute and per current stock level to prevent overselling.

  5. 5

    Monitor & re-broadcast

    Track CTR, conversion, and re-send any non-openers with a 24h follow-up.

Comparison

WhatsApp restock alert vs email/SMS

CapabilityLandinChatEmail / SMS
CTR on restock alert70–85%10–20%
Conversion rate25–40%3–8%
Template categoryUtility (cheap)N/A
Time to first open< 2 minHours
Native PDP widgetYesPlug-in
Throttled to stock levelBuilt-inManual
FAQ

Frequently asked questions

Recover lost demand the moment stock returns

PDP notify-me, inventory webhook, Utility-category restock alerts — ship today.