HubTools

Email QR Code Generator

QR code that opens a pre-filled email in the recipient's default mail app.

How does an email QR code work?

An email QR code encodes a mailto: URL — when scanned, it opens the user's default mail app (Apple Mail, Gmail, Outlook) with the recipient pre-filled, and optionally with a subject line and body text. It's the easiest way to drive cold-email or feedback responses from a printed flyer, business card, or in-store sign. The mailto: spec is universal across iOS, Android, Windows, and macOS. Encoding is computed locally on your device — no signup, no upload, no tracking.
Content
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Enter content to generate a QR code

About the mailto: scheme

RFC 6068 defines the mailto: URL scheme used universally by mobile and desktop mail clients.
  • Format: mailto:address?subject=...&body=...
  • Subject and body are URL-encoded (spaces → %20, line breaks → %0A)
  • Multiple recipients: mailto:a@x.com,b@x.com or use ?cc= and ?bcc=
  • Universally supported on iOS, Android, Windows, macOS

Frequently asked questions

Will this open Gmail or the default mail app?
It opens whatever the user has set as their default mail handler. On iOS that's typically Apple Mail unless they've installed Gmail and changed the default; on Android it's typically Gmail. The QR doesn't control which app opens — that's a system setting.

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