How to Set Up Low Stock Alerts in Shopify

Running out of a best seller is one of the most expensive and most avoidable mistakes in ecommerce.

Set thresholds by velocity, not a flat number

A single low-stock number across the catalog rarely works because products sell at very different rates. A fast mover might need an alert at 50 units while a slow mover only matters at 5.

Where possible, base the threshold on how many days of stock remain at the current sales rate, combined with supplier lead time. That tells you when to reorder, not just when stock is numerically low.

Separate low stock from sold out

Low stock is a warning that gives you time to act; sold out is a lost-sales event that needs immediate attention. Treat them as distinct alerts so the urgent case is never buried under routine warnings.

A sold-out alert is also a merchandising trigger: you may want to hide the product, mark it as coming back, or promote an alternative.

Deliver alerts where the team will see them

Posting low-stock alerts to a Slack channel that the operations team watches turns a passive report into a prompt that someone actually acts on.

Avoid alert fatigue

• Only alert on products that matter to revenue.
• Avoid repeated alerts for the same item every sync.
• Group or summarize when many items are low at once.
• Review thresholds when sales velocity changes seasonally.

If a low-stock channel becomes noisy, the team stops reading it. Tune thresholds and de-duplicate repeats so each alert still earns attention.

Frequently asked questions

How do I get a low stock alert in Shopify?

Choose an inventory threshold for your products, monitor stock levels against it, and trigger a notification when stock drops below the threshold. Sending the alert to a Slack channel your team watches makes it most likely to be acted on.

What is a good low stock threshold?

There is no single number. Base it on sales velocity and supplier lead time so the alert fires with enough runway to reorder. Fast-moving products need higher thresholds than slow movers.

What is the difference between low stock and out of stock alerts?

A low stock alert is an early warning that gives you time to reorder, while an out-of-stock alert flags a lost-sales situation that needs immediate action. Keeping them separate prevents urgent cases from being buried.