Automate Stock Checks and Back in Stock Alerts in Chat

By Alva Chew 5 min read Updated November 11, 2026

Answer “is it in stock?” from your live inventory, and add shoppers to your restock list when it isn’t. AeroChat checks the exact size and color in your store, sends the link when it is in stock, offers the closest alternative when it is not, and signs the shopper up for a back in stock alert in the app you use. It runs on WhatsApp, Instagram, Messenger, web chat, email and every other channel.

Most stock questions come from shoppers who are ready to buy. This workflow keeps them, either with a sale now or with a place on your restock list.

What customers ask

  • “Do you have this in M?”
  • “When is the black one back?”
  • “Can you tell me when it’s restocked?”
  • “Is this available in your store or only online?”
  • “How many do you have left?”

What AeroChat does, step by step

  1. Finds the product and the exact variant the shopper means, and asks if the size or color is not clear.
  2. Checks live stock for that variant in your store.
  3. If it is in stock, says so and sends the link.
  4. If it is sold out, offers the closest variant in stock, such as another color in the same size.
  5. If the shopper wants to wait, takes their email or uses their number and creates a back in stock sign-up for that variant in your alerts app.
  6. Shares a restock date only if you have put one in the knowledge base.

The systems it uses

What it looks like on WhatsApp

Customer: Do you have the wool throw in rust? (example)

AeroChat: The wool throw in rust is sold out right now. Oatmeal and charcoal are in stock. Or I can tell you when rust is back.

Customer: Rust please. ana@example.com

AeroChat: Done. You’re on the list for the wool throw in rust. You’ll get an email the day it’s back.

In your alerts app: a back in stock sign-up for the wool throw in rust is created for ana@example.com (example). Your restock flow sends the alert.

The recipe

Copy this into AeroChat

When a shopper asks whether a product is in stock, follow these steps.

  1. Find the product and the exact variant in our store. If the size or color is not clear, ask.
  2. If it is in stock, say so and send the product link.
  3. If it is sold out, offer the closest variant that is in stock.
  4. If they want to wait, ask for their email and create a back in stock sign-up for that exact variant in Klaviyo (example).
  5. Confirm what they signed up for and how they will be told.
  6. Share a restock date only if our knowledge base has one.

Never say how many units are left unless we allow it. Reply in the customer’s language.

Change the alerts app and whether you share stock counts before you paste it.

After you paste the recipe, AeroChat builds the workflow as a draft and shows a checklist of what is left: connect your store and any app the recipe uses, add your policies to the knowledge base, then switch it on.

Where it runs

The same workflow runs on WhatsApp, Instagram, Facebook Messenger, Telegram, the chat on your website and email. On TikTok Shop it answers in buyer chat, and it supports Shopee and Lazada too. Your store stays the record whichever channel the customer uses.

On Shopify? See stock and back in stock in chat for Shopify. Channel versions: WhatsApp stock questions. Also see what to do when customers ask for sold-out products.

Questions

Is the stock AeroChat quotes live?

Yes. It reads stock from your store, so the answer matches what the shopper can buy.

Does AeroChat send the restock alert itself?

Your back in stock app sends it, as it does for sign-ups on your product page. AeroChat creates the sign-up for the exact variant the shopper asked about.

Can the alert go out on WhatsApp?

Yes, if your alerts flow sends WhatsApp messages. Outside the 24-hour window it has to be an approved template.

What if I sell on Shopee, Lazada or TikTok Shop too?

AeroChat answers buyers there as well, and checks stock in the same store data.

Using a different system? If it has a public API, it connects to AeroChat the same way: describe what you want, paste in its key, and it runs.

Can’t find your tool? Message us in the chat on this page and we’ll tell you how it connects.

Turn your next sold-out question into a sign-up

Connect your store, paste the recipe, and ask your own chat for a variant that is sold out.

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Sign up for an annual plan on Growth or above and we’ll set up your workflows for you, free. See plans.

On Shopify? Install AeroChat from the Shopify App Store.