An email QR code uses the standard mailto: URI scheme to encode an email address, subject line, and body text. When scanned, it opens the phone's default email app with all fields pre-filled. The user just reviews the message and taps Send. This removes friction and increases the chances of getting a response.
Fields You Can Pre-Fill
Email address — The recipient address (required)
Subject line — Pre-written subject for quick identification
Body text — A template message the sender can edit before sending
CC and BCC — Additional recipients if needed
Best Uses for Email QR Codes
Customer feedback — "How was your experience?" with pre-filled subject
Event RSVP — Scan to confirm attendance with details pre-filled
Support requests — Include product info in subject line for faster service
Job applications — Pre-fill position title in subject line
Newsletter sign-up — "Subscribe" in subject with instructions in body
Email QR Code Tips
Keep Subject Short
Long subjects make the QR code denser and harder to scan. Keep subjects under 50 characters.
Test on Multiple Devices
Some email apps handle mailto: URIs differently. Test on both iPhone and Android before printing.