Tell the people who wanted it that it's back.
A sold-out product is a list of people who already decided to buy. Hamla listens for the back-in-stock event and messages exactly that list, in the order they asked.
Trigger: Back in stock
What a restock alert looks like.
Collect the waitlist
01An on-site notification on the sold-out product captures who wants it. That's a contact plus a specific product intent.
Wait for the restock event
02When your store marks the product available again, it fires back-in-stock. No inventory polling, no manual export.
SallaZid
Shopify
🔔Alert the waitlist first
03Message the waitlist before you announce it publicly. They asked, they get first claim — and that's what makes the alert feel like a favour.
WhatsAppPushSay when it's going again
04If the restock is small, a low-stock follow-up converts the undecided. Honest scarcity only — Hamla uses your real stock number.
Restock alerts, beyond retail.
E-commerce
Waitlist popup on sold-out size → WhatsApp the moment it's back → low-stock nudge.
Clinics
Fully-booked specialist → alert when a slot opens → direct booking link.
Restaurants
Sold-out dish or fully-booked night → alert when tables free up.
Coaching
Closed cohort → waitlist → first-access alert when enrolment reopens.
Restock alert questions.
How do I collect a back-in-stock waitlist?
Put an on-site notification or popup on the sold-out product that asks for one contact detail. Hamla stores it against the product, so the alert goes only to people who wanted that specific item.
Which channel should a restock alert use?
The fastest one the contact accepted, because restock alerts are a race. WhatsApp and push arrive in seconds; email is the fallback when it's the only detail you have.
What if the restock sells out again immediately?
Hamla reads your live stock level, so it stops sending once the product is gone rather than driving people to an out-of-stock page. Anyone unsent stays on the waitlist for the next restock.
Integrations that power this campaign
Channels it sends on
Explore other campaigns.
Use case · Acquisition
Turn new visitors into loyal customers.
A welcome series is the first conversation you have with a new contact. Build the right sequence — Hamla delivers it the moment someone joins.
Use case · Recovery
Win back the carts your customers left behind.
Most shoppers who add to cart never check out. Hamla watches for the abandoned-cart event and reaches out while the intent is still warm — on the channel that customer actually reads.
Use case · Retention
Keep customers coming back.
The sale is the start, not the finish. Build a post-purchase sequence that delights, earns reviews, and brings customers back for more.
Use case · Recovery
Follow up on the product they looked at but didn't add.
Browsing is intent too. Hamla tracks viewed products and repeat visits, then follows up on the item someone kept coming back to — long before a cart ever exists.
All use cases →Ready to build your campaign?
Free plan · No credit card needed