Receive Low Inventory Alerts For Specific Stock Locations In Shopify

When inventory levels change at any Shopify location (from order fulfillment, manual inventory adjustments, returns, stock transfers, or inventory imports), this trigger activates the workflow and captures the inventory item ID, location ID, and new available quantity. The workflow runs for every inventory change across all locations. No configuration is required—it's pre-connected to your Shopify store and monitors all inventory updates automatically.

Multi-location context: This trigger fires for each location separately. If you transfer stock between locations, it triggers twice (once for the decrease at source location, once for the increase at destination location).

This step retrieves the inventory item record using the inventory item ID from the trigger. It returns inventory item data including SKU, cost, country of origin, harmonized system code, and tracking status. The SKU is essential for the next step's product variant lookup.

Inventory item context: In Shopify's data model, inventory items are separate from product variants. One variant can have multiple inventory items (one per location), and inventory items store location-agnostic product information like SKU.

This step retrieves the product variant using the SKU from the inventory item. It returns variant data including product variant ID, product ID, variant title, price, and inventory management settings. The product ID is used in the next step to fetch complete product details.

SKU lookup: This uses MESA's SKU lookup endpoint which searches all product variants for a matching SKU. This is necessary because Shopify's inventory system doesn't directly link inventory items to variants.

This step retrieves the full product record using the product ID from the variant lookup. It returns complete product data including product title, description, vendor, product type, tags, images, and all variants. The product title is used in the alert email to clearly identify which product has low stock.

This step retrieves the location record using the location ID from the trigger. It returns location data including location name, address, active status, and legacy status. The location name appears in the alert email to specify where restocking is needed.

Multi-location value: For businesses with multiple warehouses or retail stores, knowing which location has low stock is critical for directing restocking efforts to the right place.

This step retrieves shop information from Shopify, specifically the myshopify domain. This domain is used to build the product admin URL format "https://admin.shopify.com/store/[shop]/products/[product_id]" that appears in the alert email.

This filter checks if the available inventory quantity is less than your configured threshold.

Configuration: You must set the low stock threshold during setup—the default is 1 (alert when stock reaches 0 or below), but you can increase it to get earlier warnings (like 5, 10, or 25 units).

Threshold strategy:

1. Low threshold (1-5): Last-minute alerts, minimal notification volume
2. Medium threshold (10-25): Balanced warning time for restocking
3. High threshold (50-100): Early warnings for high-volume products or long lead times

If the inventory is above the threshold, the workflow stops without sending an alert. Only inventory below the threshold proceeds to email notification.

This step sends an email to your configured address.

Configuration: You must enter the alert recipient email during setup—this could be your inventory manager, warehouse team email, or your personal email.

The email includes:

1. Subject: "Product [product name] stock level is low"
2. Message body:
3. Product name
4. Location name where stock is low
5. Current available quantity
6. Direct admin link to the product

Team distribution: For larger teams, use a distribution list email or add multiple email steps for different recipients. You could also replace/supplement with Slack notifications for real-time team alerts.