Receive Slack Notifications When a Shopify Product Goes Out of Stock

When a customer completes an order in your store, this trigger automatically captures all the order details including line items, quantities, and product variants. The trigger runs immediately when an order is created and requires no configuration from you. It passes the complete order data to the next step so the workflow can examine each purchased item and check their current inventory levels.

The workflow automatically retrieves your shop's basic information from Shopify, including your store's domain name. This data gets used later when generating direct links to product pages in the Slack message, so you can quickly navigate to out-of-stock items from the notification. No configuration is needed as it pulls from your connected Shopify store automatically.

The Loop step takes the line items array from the order and creates a separate execution path for each product variant purchased. If someone orders 3 different products, this creates 3 parallel processes - one for each item. This ensures that every single product variant gets its inventory checked individually, preventing any out-of-stock items from being missed in larger orders.

For each product variant from the loop, this step queries Shopify to get the latest inventory information including current stock quantity, SKU, and product details. It retrieves the exact inventory count at the moment the workflow runs, not the inventory level from when the order was placed. This current data gets passed to the filter step to determine if the item has reached zero stock.

The Filter step compares the current inventory quantity to zero and only passes items that match this condition. If the inventory quantity equals zero, the workflow continues to send a Slack notification. If the item still has stock remaining, the workflow stops for that particular variant. This ensures you only receive alerts for genuinely out-of-stock items, avoiding notification spam for products that are still available.

You'll configure which Slack channel should receive the out-of-stock notifications by entering your channel name in the "What is your Slack channel?" field. The message automatically includes either the product SKU or the product title with variant options, plus a direct link to the product page in your Shopify admin. Enter your channel name exactly as it appears in Slack (with or without the # symbol).