Email QR code generator
Set the address, and optionally a subject and a message. Scanning the code opens a new email in the mail app with those fields filled in.
Free, with no account, no watermark, and no scan limit. The code is static: what it holds is in the pattern, so it never expires.
What happens when someone scans it?
The phone opens its mail app with a new email. The person checks it and taps Send. Nothing is sent automatically.
What is in the code?
mailto:<address>?subject=<subject>&body=<message>A mailto link (RFC 6068). Spaces and special characters in the subject and message are percent-encoded, so a space is %20.
How big should I print it?
Measured with the encoder this page uses, for one example: an address, a subject, and a three-line message (101 characters). Each module needs at least 0.4 mm, and no code should be under 2 cm. A logo raises error correction to level H, which adds modules.
| Design | Modules | Minimum width | Scans from up to |
|---|---|---|---|
| No logo (level M) | 41 × 41 | 2 cm | 20 cm |
| With a logo (level H) | 57 × 57 | 2.3 cm | 23 cm |
For your own content and scan distance:
Tips
Pre-fill the subject
A fixed subject such as "Table booking" or "Feedback, store 12" lets you sort the emails you get from the code.
Give the message a shape
Lines such as "Date:" and "Guests:" tell people what to write, and you get answers in the same order.
Keep the message short
Every character is in the code. A long message makes a dense code that needs more print space.
Show the address too
Some people use a computer, or a phone without a mail app set up. Print the address next to the code.
Questions
- Does the email send by itself?
- No. The code opens a draft. The person who scanned it reads it and taps Send.
- Which mail app opens?
- The default mail app of the phone: Mail on iPhone, often Gmail on Android. If none is set up, the phone asks which app to use.
- Can people see the email address?
- Yes. The address is in the To field of the draft, and anyone with a QR reader can read it from the code.
- Can I see who scanned the code?
- Not from the code: it holds the email fields and nothing else. You see who wrote when the email arrives.