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Email QR Code Generator: Pre-Fill Email Address and Subject Free

By Aniket Nigam · Verified 2026-04-15 · Methodology

Quick Answer

An email QR code encodes a mailto: URI with the recipient address, subject line, and optional body pre-filled. Scanning opens the phone's default email app with the email partially composed - the sender just taps send.

Create QR Code Free See Format Syntax

Format Syntax

mailto:{email}?subject={subject}&body={body}

Example:

mailto:support@qrcrack.com?subject=Question%20about%20QR%20pricing&body=Hi%2C%20I%20have%20a%20question%3A

How to Create a Email QR Code - Step by Step

1
Open QRCrack's email QR tool.
2
Enter the destination email address in the To field.
3
Add a subject line - keep it under 60 characters so it does not get truncated in mail client previews.
4
Optionally add a body template. Use plain text and avoid HTML - it will not render in most mobile mail apps.
5
Generate and download the QR. Test it by scanning with your phone before printing.

Where to Use Email QR Code Codes

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Feedback forms at events - scan and the email to the organizer opens pre-filled with 'Event Feedback' as subject.
+
Customer support - print on product inserts so buyers contact support without searching for your email.
+
Job applications - include on a resume or portfolio so recruiters email you with one scan.
+
Business networking - conference QR that pre-fills a follow-up email template.
+
Complaint or returns - retail QR that opens a pre-addressed returns email.
+
Newsletter sign-up - QR that opens an email to a subscribe address with 'Subscribe' as subject.

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Email QR Code Generator

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Frequently Asked Questions

Does the email QR work with all email apps?

All standard email clients that respect the mailto: URI scheme respond correctly - Gmail, Apple Mail, Outlook, Spark, and native Android mail apps all open and pre-fill the fields. Web-only clients like browser-based Gmail may not respond to mailto: on desktop.

Can I pre-fill the email body?

Yes. Add &body=Your+text+here to the mailto URI. Spaces must be URL-encoded as %20 or +. Most mobile mail apps display the pre-filled body, though some strip it for security.

Is the email address visible to the person scanning?

Yes. QR codes are not encrypted. Anyone who scans the code can read the raw mailto: text, including the email address. Do not encode private or sensitive addresses.

What character limit applies to mailto: URIs in a QR?

The QR format limits the total encoded string to 4,296 characters. A typical mailto: URI with a short subject and body stays well under 500 characters, so length is rarely a constraint.

Other QR Code Formats

WiFi QR Code

WIFI:T:{security};S:{network_name};P:{password};

vCard QR Code

BEGIN:VCARD

URL QR Code

https://{domain}/{path}?{query}

SMS QR Code

SMSTO:{phone_number}:{message_body}

Phone QR Code

tel:+{country_code}{local_number}

Geo Location QR Code

geo:{latitude},{longitude}

Calendar Event QR Code

BEGIN:VCALENDAR

Bitcoin Payment QR Code

bitcoin:{address}?amount={btc_amount}&label={lab

Plain Text QR Code

{your text content, any characters}

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