Blog / Marketing
QR codes that actually grow your customer list
A practical playbook for using QR codes in a cafe, shop, salon or restaurant to collect emails, run offers and measure what works.
QR codes went from gimmick to everyday habit. Customers now scan them without thinking. That makes them one of the cheapest ways for a local business to turn people who walk in into people you can reach again.
The trick is giving people a reason to scan, and making what happens next fast.
Key takeaways
- Every QR code needs a clear reason to scan ("10% off your next visit", "free cookie", "join the waitlist").
- The landing page must be mobile-first and one step: an email field and a button.
- Use a different code for each placement so you can see which poster actually works.
Where to put your QR codes
- On the counter or by the register. The classic. Pair it with an offer.
- On tables. Diners have time to kill while waiting for food.
- On receipts and bags. A thank-you with a reason to come back.
- In the window. Capture interest even when you're closed ("Scan to hear about our opening night").
- At events and markets. A sign at your stall turns passers-by into subscribers.
- On mirrors at salons and barbers. Clients are a captive audience for 30 minutes.
What to offer
A good offer is small for you and meaningful for them:
- A free add-on (cookie, coffee, deep-conditioning treatment)
- A percentage off the next visit (it brings them back)
- Early access to new menus, products or event tickets
- Entry into a monthly draw
Keep the offer redeemable on a future visit. The goal is the second visit, not a discount on today's.
Make the landing page fast
When someone scans, they should see a page that loads instantly, explains the offer in one line and asks for one thing: their email (and maybe a first name). No account creation, no app download. Show the coupon code right away.
Measure everything
Use a separate code for the counter, the tables and the window. After a month you'll know which placement earns its spot, and you can redesign or move the ones that don't.
Then actually email people
A list is only valuable if you use it. A short monthly note (new menu, upcoming event, a quiet-night offer) keeps you top of mind. Make sure every email has an unsubscribe link and only goes to people who opted in.
How DollarSite does it
The QR signups app creates print-ready posters, table tents and cards, a fast mobile landing page for each code, and coupon codes for offers (shown on screen and emailed). You see scans and signups per code, every signup lands in Contacts, and the Newsletter app lets you email them from the same dashboard. Both are included in $7 per month.
Frequently asked questions
Do customers need an app to scan QR codes?
No. Modern phone cameras scan QR codes natively.
Is it legal to email people who signed up via a QR code?
If they clearly opted in to hear from you, generally yes, but rules vary by country. Always say what they're signing up for, and include an unsubscribe link in every email.
How big should a printed QR code be?
As a rule of thumb, at least 2 to 3 cm across for close-up scanning (tables, receipts) and larger for posters seen from a distance.
Written by the DollarSite team. We make a website builder for small businesses, so we have a point of view. We've tried to make this guide useful whatever tool you choose.