Do I need to fill subject and body?

No. Only the email address is required. Subject and body are optional.

Which mail apps work?

Any app that handles mailto: links — typically the default Mail, Gmail, Outlook, or similar on the scanning device.

Yes for generation. maintool processes fields locally in the browser and does not upload them to create the QR image.

The device may prompt to choose an email app or show an error. Always test on the phones your audience actually uses.

100% client-side — no data uploaded

Open a ready-to-send email with one scan — optional subject and message included.

QR type

Required fields only

Email address

Subject (optional)

Message body (optional)

Style

Size (px)

Logo (optional)

Foreground

Background

Live preview

Fill in the form and click Generate to preview your QR code.

Your data never leaves your browser — all QR codes are generated locally.

An email QR code uses a mailto: link. Scanning it opens the device’s mail app with your address filled in, and optionally a subject and body.

Useful for support desks, feedback forms on posters, event follow-ups, and print ads where email is preferred over a phone call.

maintool creates the mailto payload and QR image in your browser. Addresses and message text are not uploaded for generation.

Keep subjects short so they remain readable in the mail composer. Pre-filled bodies help you recognize which flyer or location the message came from.

Because codes are static, changing the subject or body means generating a new image for print and digital placements.