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Warehouse stock alerts for Shopify
A warehouse is not just a big shop. It restocks on a much slower clock, from much further away and usually in far bigger amounts. Copy your shop numbers across to it and the alerts will fire far too late to help.
By Fazeel Tanveer, Founder · Last reviewed 25 August 2026
The short version
A warehouse is not a big shop. It restocks on a slower clock, from further away, usually in much larger quantities, so a threshold copied from your retail location will warn you far too late. Set warehouse thresholds from the supplier's real lead time rather than from days of cover, then alert on that location on its own rather than on your total across everywhere.
On this page
A warehouse restocks on a much slower clock
Everything about a warehouse alert comes down to one thing: how long it takes to get more stock in.
| Retail location | Warehouse | |
|---|---|---|
| Restocked from | Your own warehouse | The supplier |
| Typical lead time | Days | Weeks, sometimes months |
| Order size | Cases | Pallets or containers |
| Cost of being wrong | A transfer | Expedited freight, or a stockout everywhere |
The sum multiplies daily sales by days to restock, so a restock measured in weeks gives you a number many times higher than a shop's. If your warehouse threshold looks alarmingly big, it is probably right.
A warehouse running out empties every location
A shop running out is one location's problem and you can usually fix it by moving stock across. A warehouse running out means nowhere can be topped up, so every location empties at its own pace and then stops.
That makes warehouse alerts far more serious than shop alerts. Give yourself a longer warning, send them to more than one person and act on the first email rather than the third.
Alerts for a third party fulfillment partner
If a fulfillment partner holds your stock, you can still see that location in Shopify, as long as their integration writes the numbers back. Check two things before you trust alerts from it.
- How often the numbers update. An alert is only as fresh as the data behind it. If your partner writes back on a timetable rather than every time stock moves, your alert is late by the same amount. Raise the threshold to cover that delay.
- How fast arrivals get booked in. Stock that has physically landed but has not been logged still reads as low. Those alerts look wrong and wrong alerts teach people to ignore all of them.
Setting up warehouse alerts step by step
- Work the number out from your supplier's real delivery time, not from what feels about right. Use the true figure, including the slow months.
- Add a buffer for late deliveries. Suppliers slip and the buffer is what absorbs it. See the safety stock formula.
- Send warehouse alerts to more than one person. These are the ones you cannot afford to have land with somebody who is on holiday.
- Add a daily summary. Warehouse stock drains slowly rather than dropping all at once and a morning list makes that slide obvious in a way single alerts never do.
- Check it after every restock. If the alert left you too little time to do anything, the number was too low. Raise it.
Alerts that name the warehouse
Stockwell watches each location on its own with its own number, so a warehouse that takes six weeks to restock can warn you far earlier than a shop you top up overnight.
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Common questions
What threshold should a warehouse use?
Units shipped per day times the days your supplier really takes, plus a buffer for late deliveries. At ten units a day with a six week wait that is around 420 units before any buffer. Far higher than a shop threshold. That is correct.
Can I get alerts for a third party fulfillment location?
Yes, as long as their integration writes the numbers back into Shopify. Check how often it updates, because your alert is only as fresh as that data. Raise the threshold to cover the delay.