Developer QR codes

Email QR code generator

Subject

Message

Version 2 · 33×33 · 22/26 bytes

Error correction

Higher levels survive more damage and make the code denser. M is the usual choice; use H only if the code will be printed small or partly covered.

Dark Light Margin

Local · subject and body URL-encoded for you

What the code actually contains

mailto:?subject=&body=

Encodes a `mailto:` link with subject and body. Scanning opens the phone’s mail app with a draft ready — the person still sends it.

How to make a email qr code

1 Fill in the fields. The code updates as you type.

2 Raise the error correction if it will be printed small or might get covered.

3 Download it as PNG for the web or SVG for print — SVG stays sharp at any size.

The subject and body have to be URL-encoded to survive, which is handled here; a hand-written mailto with a space or an ampersand in the subject truncates at that character and quietly loses the rest. Length is the practical limit: a long body makes a dense QR code, and mail clients differ in how much of a mailto body they accept, with some truncating around 2,000 characters. Keep the body to a short prompt — a reference number, a template opening line — rather than a full message. Note it opens the default mail app, so a phone with no mail account configured does nothing useful.

Questions

Are the subject and body encoded properly? −

Yes. A hand-written mailto with a space or ampersand in the subject loses everything after it.

How long can the body be? +

Does it send the email? +

Will this QR code expire? +

What if the phone has no mail app set up? +

Sources

ISO/IEC 18004 — QR code specification ZXing — barcode contents formats

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