QR Codes in Email Marketing — Does It Even Make Sense?
The paradox of QR codes in emails: you're already on a device that can click links. When it works, when it doesn't, and the few scenarios where it's genuinely useful.
Let's address the elephant in the room. A QR code in an email requires the recipient to pull out a second device and scan their screen. They're already on a device that can click links. Why would they do that?
Mostly, they wouldn't. But there are a few scenarios where it actually works.
The Paradox
Someone opens your email on their laptop. They see a QR code. To use it, they need to:
- Pick up their phone
- Open the camera
- Aim it at their laptop screen
- Wait for the scan to register
- Tap the notification
This is why most QR codes in emails are pointless. You're adding friction to a process that was already frictionless. It's like putting a doorbell on a door that's already open.
When It Actually Works
There are exactly four scenarios where a QR code in an email delivers value:
1. Print-This-Coupon
The email contains a coupon or voucher meant to be presented in person. The customer prints the email (or shows their phone screen), and the cashier scans the QR code to apply the discount.
In this case, the QR code isn't for the recipient — it's for the store's POS system. The recipient just carries it.
Starbucks does this well. Their email promotions include a QR code that maps to the customer's rewards account. Barista scans it, discount applies. The QR code is the bridge between digital offer and physical redemption.
2. In-Store Pickup
"Your order is ready. Show this QR code at the pickup counter." The email is a ticket, and the QR code is the machine-readable identifier.
Target, Walmart, and Best Buy all use this pattern. The QR code in the email is scanned by store staff, not by the customer.
3. Cross-Device Transfer
The recipient opens the email on desktop and wants to continue on mobile. A QR code transfers the session. This is common in:
- App download campaigns (email on desktop, install on phone)
- Mobile-only features (AR experiences, camera-based tools)
- Authentication flows (WhatsApp Web uses this pattern)
4. Forwarded Physical Use
The email is designed to be printed and given to someone else. Conference tickets, boarding passes, event RSVPs. The QR code will eventually be scanned by a different device than the one displaying the email.
What Doesn't Work
- QR code as a "creative" link — replacing a button with a QR code in a marketing email. This only adds friction.
- QR code for "engagement" — some marketers add QR codes hoping it looks tech-savvy. It doesn't. It looks like they don't understand the medium.
- QR code to a landing page — just link to it. You're in an email. Links work.
- QR code for app download — unless the email is primarily opened on desktop. Check your open-rate data by device. If 70% opens are mobile (the industry average), they can't scan their own phone screen.
Email Open Device Split (2025-2026 Data)
| Device | Share of Opens |
|---|---|
| Mobile | 55-65% |
| Desktop/Webmail | 25-35% |
| Tablet | 5-10% |
More than half your recipients open on mobile. A QR code in an email is useful to, at best, the 30% who open on desktop AND have their phone nearby AND are motivated to scan. That's a small audience.
If You Must Use a QR Code in an Email
Follow these rules:
- Always include a clickable link alongside the QR code — the QR code is an option, not the only path
- Explain why — "Scan this at the store" or "Scan to open on your phone" gives context
- Size it appropriately — at least 150x150 pixels in the email. Smaller codes won't scan from a screen at arm's length
- High contrast — screens have variable brightness. Black on white works best.
- Test on actual screens — scan the QR code from a laptop screen, desktop monitor, and tablet at typical viewing distance
The Better Alternative: Deep Links
Instead of a QR code, use a smart link that detects the device and routes accordingly:
- Desktop click → opens webpage
- Mobile click → opens app (if installed) or app store
The Bottom Line
QR codes in emails are a solution looking for a problem in most cases. Use them only when the code is meant to be scanned by a different device (POS system, store staff, entry gate) or when you're deliberately bridging desktop-to-mobile.
For everything else, a regular link is better. Don't add complexity where simplicity works.
Related Tools
- QR Code Generator — create codes for in-store redemption
- Dynamic QR Codes — track coupon scan rates
- URL QR Code — simple URL encoding