Free
$0 forever
- Threshold and days-of-stock alerts
- Monday restock list
- One email recipient
- All locations, no variant limit
- Activity log and Shopify Flow trigger
No card, no variant limit.
Install on ShopifySimple. Quiet. Always in stock.
Never run out of your best‑sellers.
Stock Alert App watches your Shopify inventory and emails you once when a variant hits your number, or a few days before it runs out at its sales pace. Simple and automatic.
- Setyour limit
- Getone email
- Reorderon time
Free on the Shopify App Store · No variant limit · Flow optional
Free to start
Alerts and the Monday list are free, with no variant limit. Pro is optional.
One email per crossing
Sitting at the threshold stays silent.
Inventory only
Products, stock, and locations. Nothing else.
Flow optional
Slack or tags later, if you want them.
Live today
How it works
You set the limits. We send the email.
A variant drops to your unit threshold, or its stock covers fewer days of sales than your limit → one email and a line in the activity log. Restock above it, and the next crossing can fire again.
- 01
Set your limits
A unit floor, and how many days of sales you need to reorder in time. The email goes to the shop contact by default.
- 02
We learn your sales pace
Every stock change is checked. After 7 days, we know how fast each variant sells, without reading your orders.
- 03
You reorder from the email
Units left, days left, suggested quantity. Plus a restock list every Monday.
The email you would get
Low stock alert
Wool sweater · Heather / M
Available
3
Dropped to your threshold of 5 at Warehouse A. SKU WSW-HM.
- One email per crossing, not per sale
- Optional Shopify Flow trigger
- Reads products, inventory, and locations only
Pricing
Free to start. Pro when you need more.
Alerts in units and in days of stock, the Monday restock list and the activity log are free, with no variant limit. Pro adds the controls a growing team needs.
14-day free trial
Pro
$9.99 / month
- Everything in Free
- Rules per product
- Choose your locations
- Alerts for your team
- Slack alerts
- CSV restock list
Billed by Shopify. Cancel any time in the app.
Install on ShopifyThe rule
Why it stays quiet
You only hear when the line is crossed.
Every sale moves stock. Most of those moves can wait. Stock Alert App remembers the last state and writes you once — when available units drop to your threshold or below. Days of stock follow the same rule: one email when the sales pace says you are about to run out.
Not every sale
Sitting at 3 units does not email again. Restock above the line, then the next drop can.
Enough to reorder
The email names product, variant, SKU, units left, and location.
Inventory only
We read products, inventory, and locations. Not orders. Not customers.
Same rule, later
After low stock
The live product is inventory. These would use the same idea: a threshold, one alert.
Coming next
Refund Monitor
Alert when a product's refund rate climbs past a line you set.
Coming next
VIP Recovery
Alert when a high-value customer has gone quiet.
Questions
- Will I get an email on every sale?
- No. One email when available units drop to your threshold or below. After you restock above it, the next crossing can alert again.
- Do I need Shopify Flow?
- No. Stock Alert App emails you and logs the crossing. Flow is only if you want Slack, a tag, or another action after the same alert.
- What does Stock Alert App read?
- Products, inventory, and locations — so the email can name the variant, SKU, and place. We do not read orders or customers.
- What does it cost?
- Nothing to start: alerts, days of stock and the Monday list are free, with no variant limit. Pro is $9.99 a month after a 14-day free trial, for rules per product, a choice of locations, team and Slack alerts, and the CSV list.
Install on Shopify. Set a number. Get the email.
You review permissions on Shopify before anything is watched.