QR code email signature: what it can track and what it cannot

A QR code email signature sounds like a gimmick until you watch how people read mail. Many recipients open your message on a laptop, with their phone lying next to the keyboard. A small code at the bottom lets them move your contact details, a booking page or a portfolio onto that phone in one scan. This guide covers when the code helps, when it does nothing, what a scan can and cannot tell you, and how to add one in Gmail and Outlook.

Why a QR code email signature can earn its place

The code bridges two screens. The reader is at a desk with your email open on the large screen, and the next step happens on the phone: saving your number, opening a map before a site visit, or booking a call on the way to a meeting.

Three destinations tend to work well:

• Your contact card. The recipient scans once and saves your details without retyping them.
• A booking page. A client picks a slot for a first meeting on the device that holds their calendar.
• A portfolio or project page. Photos and drawings look better on a phone in the hand than in a cramped mail preview.

Printed mail is the strongest case. A quote that you send as a PDF often ends up on paper, together with the email that carried it. The signature on that printout still shows the code, so the reader can scan it from the page days later. A plain link on paper gives them nothing to tap.

When the code does nothing at all

Now picture a different reader. She opens your email on her phone, on a train. The code sits on the same screen as the camera she would need to scan it. A phone cannot scan its own display, so for her the code is dead weight.

That reader is common, and the fix is simple: always place a clickable link next to the code. A line such as "Save my contact details", linked to the same page, serves the phone reader. The code serves the laptop reader and the printout. Nobody has to guess.

A few habits keep the code useful:

• Keep it small enough not to dominate the signature, and large enough to scan from a screen at arm's length.
• Put a short label beside it, so people know what they get before they scan.
• Leave it out of quick internal replies. A code in every reply to a colleague adds noise and nothing else.

What a scan can tell you, and what it cannot

A dynamic QR code points to a short redirect first and then to your page. That redirect is where counting happens. With EUQR's dynamic QR codes, each scan is counted on the server, and you can change the destination later without replacing the image in anyone's signature.

What you see is aggregate. EUQR's scan statistics show counts per code over time, broken down by country, device, browser and phone language. They are aggregate counts only: EUQR stores no IP addresses and uses no tracking cookies, and there is no city level. Scan data is hosted in the EU, in Amsterdam.

What you cannot see is the person. A scan does not tell you which recipient scanned, whether they read the email, or who forwarded it to whom. With one code per signature, you learn how often that signature's code was scanned. With one code per department, you learn which team's mail leads to scans.

Say your sales team's code gets 40 scans in a month and the support team's code gets 3. You still do not know who those 40 people are. You do know where the code earns its space and where a text link is all you need.

Tracking pixels in email work differently

A tracking pixel is a tiny, often invisible image with an address that is unique to one recipient. When the mail app loads it, the sender learns that this person opened this message, often with a time and a device. The pixel reports on the recipient without them doing anything.

The French data protection authority has published a recommendation on exactly this. Its deliberation n° 2026-042 was adopted on 12 March 2026, and the CNIL announced it on 14 April 2026 on its page about tracking pixels in emails (checked 4 November 2026). The recommendation sets out the cases in which a sender needs the recipient's consent.

It also describes a narrow exemption. A sender may measure, per recipient, whether messages linked to a service the person asked for are delivered, such as order confirmations or account alerts. That data may only serve to measure deliverability. For addresses collected before publication, senders had three months to inform recipients clearly so they could object.

A QR code image in your signature is not that kind of pixel. It is the same image for everyone, it reports nothing when the email opens, and a count only happens when someone decides to scan. Keep it that way. Do not create a separate code or URL per recipient to learn who scanned: that turns a neutral image into a personal tracker. Our article on tracking links and consent under the EDPB guidelines explains why personal links are treated differently. This is not legal advice.

Example: an architecture practice with 12 people

Picture a practice with 12 staff in three teams: design, technical drawings and the office. They send a lot of mail with drawings and quotes attached, and clients often print those.

Option one is a code per department. Three codes lead to three destinations, and you get a clear answer to which team's mail produces scans. It is easy to maintain, because a new colleague simply copies the team signature.

Option two is a code per person, each pointing to that person's own digital business card. Twelve codes lead to twelve cards, and a client who scans a project architect's signature saves exactly that architect's number. Tell your staff that their code is counted, even though the count says nothing about who scanned.

Both options fit the Pro plan at €9 per month or €90 per year. Pro includes 50 dynamic codes, so 12 personal codes plus a few for projects leave plenty of room. Digital business cards are available on Pro and up. Pro also has 4 seats, so decide who manages the codes: with 12 staff, not everyone gets a login. You can compare the limits of each plan on the EUQR pricing page.

Setting up a QR code email signature in Gmail and Outlook

Create the code first, download it as an image, and keep the link to its destination at hand. Then add both to your signature.

Gmail

Google's help page on creating a Gmail signature (checked 4 November 2026) describes these steps on a computer:

1. Open Gmail.
2. At the top right, click Settings, then See all settings.
3. In the Signature section, add your signature in the box. You can insert an image there as well.
4. Click Save Changes at the bottom of the page.

A Gmail signature can hold up to 10,000 characters, and images count toward that limit. If Gmail shows an error, Google suggests resizing the image.

Outlook

Microsoft's guide on adding a signature in Outlook (checked 4 November 2026) gives these steps for the new Outlook for Windows:

1. Open Settings, go to Accounts and select Signatures.
2. Choose the account if you have more than one.
3. Select Add signature and give it a name.
4. Type and format your signature. Microsoft notes that it can include pictures and logos.
5. Choose whether it appears on new messages, replies and forwards, then select Save.

For classic Outlook, Microsoft's page on creating an email signature starts from a new message. On the Message tab, select Signature and then Signatures, pick the account, select New and type your signature.

After saving, send a test to yourself and to a colleague who uses another mail app. Check that the code shows, that it scans from the screen, and that the link next to it opens the same page.

Where a QR code email signature should lead

The destination matters more than the code. For a signature, a digital business card from EUQR is a natural fit. It holds your name, photo, phone numbers, address, email, website and social links, plus a Save contact button that downloads a .vcf file. It also has its own link at qreu.eu/your-name, which is exactly the clickable link to place next to the code.

You can update the card at any time and keep the same link and code. A junior architect who becomes project lead changes the title on the card once, and every old email still leads to the right details. If you are weighing a card against a code that stores the contact data itself, read our comparison of vCard QR codes and digital business cards.