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Increase conversions with live customer activity

Your best seller sells out on Saturday morning. The ad is still running. Shoppers keep landing on a page with a grey button that says "Sold out", and they leave. Nobody left a name, so nobody hears when it's back.
A waitlist landing page is a page where shoppers who can't buy today leave their email to hear when the product is available. It turns that dead end into a list of people who already told you what they want. Here's what the page needs, how to show real demand without faking it, and when to send the email.
A sold-out page is a dead end
A shopper who reaches a sold-out product page wanted that product. That's more intent than most of your traffic shows all week.
The default Shopify product page gives them nothing to do. They can browse something else, but most won't. They came for one thing.
So the job is simple: before they leave, ask for one detail that lets you tell them when it's back.
What a waitlist page needs (and what it doesn't)
A waitlist page can be the product page itself or a separate landing page you point the ad to. Either way, it needs four things:
- The product, as it was. Same photos, same name, same price. They should know they're in the right place.
- One honest line about what happened. "Sold out on Black Friday. We're making more." If you have a restock date, give it. If you don't, say so.
- One field. The email. Use Shopify Forms or the form that comes with your email tool.
- One promise. "We'll email you once, when it's back." Then keep it.
What it doesn't need: a countdown, an urgency banner or a discount you'll regret. The product sold out. That's the proof that people want it.
Show the real number of people waiting
A waitlist has a quiet strength: the people on it are real. You can say so.
If 140 people joined, you can write "140 people are waiting for the next batch" on the page, and update it when the number changes. Use your real count from the form. If it's 12, say 12, or leave the number off until it means something. Never round up and never make one up. Our guide to creating urgency in sales covers the line between real scarcity and the kind shoppers see through.
Fomo shows real activity from your store, including sign-ups and form submissions, as small notifications on the pages you choose. On a waitlist page that means a visitor sees that other people joined recently, next to the form. That answers the question every first-time visitor has: is anyone else interested in this, or am I the only one?
Fomo can also do the counting. A Custom Roundup adds up recent sign-ups into one line with the number of people who joined, and recounts it every 10 minutes. It looks back 30 days at most, so it shows recent momentum, not the whole list. Your own count on the page covers the total.
Keep it honest. Real sign-ups only, shown as they happened. A notification that names nothing reads as decoration, and a shopper who spots one fake stops believing the rest. Our post on fake social proof notifications explains what that costs.
The restock email: when and what
The waitlist only pays off when you send the email. Send it the moment the product is back on the shelf, and make it short:
- Subject line: the product name and "is back".
- One photo, one sentence, one button to the product page.
- The truth about stock. If the batch is small, say how many you made. That's real scarcity, and it's allowed.
Send it to the waitlist segment first, before anyone else hears. They asked; they go first. If you use SmartrMail for email, you can send it to the waitlist as its own segment and keep those buyers separate for the next drop. New to SmartrMail? Install it from the Shopify App Store.
Send one reminder at most, a day or two later, only to the people who didn't open or click. Then stop.
Waitlists for launches, drops and restocks
The same page works before a product exists, too.
- Launches. A new product gets a waitlist page a week or two before release. The people who join are your first buyers.
- Limited drops. A small batch gets a waitlist, and the waitlist gets first access. Say how many you're making.
- Restocks. The sold-out case above. The most common, and the one most stores skip.
New stores often feel their numbers are too small to show. Social proof for new ecommerce stores covers what to show while you're starting out.
FAQ
Is a waitlist fake scarcity?
Not if the product really sold out or really isn't released yet. Fake scarcity is a timer that resets or a stock count that never moves. A waitlist for a product you can't sell today is the opposite: it tells the truth and asks people to wait.
What if only a few people join?
Then you learned something cheap. A handful of sign-ups tells you how big the next batch should be. Don't show a count until it helps, and never pad it.
Should the waitlist get a discount?
It doesn't have to. Early access is the reward: they hear first and buy first. If you add a discount, make it one you'd give anyway, so the list doesn't learn to wait for a code.
Is there a free way to make a waitlist?
Yes. On Shopify, the Shopify Forms app is free, as of October 2026, and adds an email form to the page. Your email tool's own form works too. What you pay for is what comes after: showing the sign-ups and sending the email.
Sold out isn't the end of a sale; it's the start of a list
Every sold-out page this Black Friday is either a dead end or a list of people who want your product. Add the form, show the real people who joined, and send one honest email when it's back.
Fomo is the original social proof app. It shows real activity from your store, right where shoppers decide, and it's rated 4.5 on the Shopify App Store from 154 reviews, as of October 2026. Try Fomo for free for 14 days. No credit card required.




