What is an email QR code?

An email QR code encodes a mailto: URI that pre-addresses an email message. When scanned, the phone opens the default email app with the recipient, subject, and body already filled in — the user only needs to tap Send.

Can I pre-fill the subject and body of the email?

Yes. Use the standard mailto URI format: mailto:email@example.com?subject=Your Subject&body=Your message. URL-encode the subject and body values for reliable results.

Does the email QR code work with all email clients?

Most modern email clients — Gmail, Apple Mail, Outlook, and others — support the mailto: scheme. The QR code simply opens whatever the user's default email app is.

Can I track who scanned the email QR code?

Not directly from the QR code itself, since the email is sent from the user's own account. For tracking, use a dynamic QR code that redirects to a contact form with analytics instead of a mailto link.

What is the difference between an email QR code and a URL QR code pointing to a contact form?

An email QR code opens the native email app, which some users prefer. A URL QR code to a contact form keeps the interaction on your website, gives you full control over the form fields, and enables proper tracking and analytics.

Email QR Code Generator

Free Email QR Code Generator

Create a QR code that opens a pre-addressed email draft when scanned. Perfect for feedback forms, customer support, and contact buttons — users just tap "Send" without typing your email address.

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Example Email QR Code

API URL

https://api.online-qr.com/v1/make-qr?data=mailto:[email protected]?subject=Hello...

What is a Email QR Code?

An email QR code uses the standard mailto: URI scheme to encode an email address, optional subject line, and optional message body into a scannable QR code. When scanned, the phone's default email client opens a new message pre-filled with your specified details. This removes friction from the email contact process and is commonly used on marketing materials, product packaging, event programs, and websites.

How to Create a Email QR Code

1
Format your mailto URI: mailto:[email protected]?subject=Your%20Subject&body=Your%20message%20body
2
Pass it as the data parameter: https://api.online-qr.com/v1/make-qr?data=mailto%3Ayou%40example.com%3Fsubject%3DHello
3
Embed the QR code image wherever you want people to contact you — the correct email app opens automatically on scan

Example API call

 https://api.online-qr.com/v1/make-qr?data=mailto%3Acontact%40example.com%3Fsubject%3DHello%26body%3DI%2520wanted%2520to%2520reach%2520out

Common Use Cases

Product packaging for customer support or warranty claims
Event programs for attendee feedback submission
Conference materials for speaker or sponsor contact
Retail signage for customer inquiries
Marketing materials with a "Contact Us" call to action
Restaurant receipts for direct review or feedback submission

Tips for Best Results

Pre-fill the subject line to help your team identify the source of incoming emails
Keep the body text minimal — long pre-filled messages can make the QR code complex and harder to scan
URL-encode special characters in the subject and body (spaces become %20, @ becomes %40)
Test the QR code with Gmail, Apple Mail, and Outlook to verify cross-app compatibility

Frequently Asked Questions

Related QR Code Types

vCard QR Code Generator

Turn your contact information into a scannable QR code. When someone scans your vCard QR code, they can instantly save your name, phone number, email, and address to their phone contacts — no typing required.

URL QR Code Generator

Create a QR code for any website URL in seconds. With Online-QR, just paste the URL into our API endpoint — no signup, no SDK, no software to install. Embed it anywhere as a simple image tag.

Phone QR Code Generator

Generate a QR code that initiates a phone call when scanned. Let customers call you with a single scan — no memorizing or typing required. Perfect for business signs, print ads, and contact materials.

View all 11 QR code types

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