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.
Quick start templates
Appearance
Body & eyes
Body pattern
Eye frame
Eye ball
Colors
Body
#1F2937
Eye frame
#1F2937
Eye ball
#1F2937
Background
#FFFFFF
Logo

Drop a logo, or click to browse

PNG, JPEG, SVG, WebP · up to 2 MB

Frame
Frame style
Advanced
Size
Error correction
Quiet zone (4 modules)
Preview
Enter content to generate a QR code
Download
Format
PNG and WebP support transparency. SVG scales to any size without quality loss. JPEG is the smallest file but has no transparency.

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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