based on chat GPT, this can be achieved :
can you try and reply back if it works or not

import 'package:qr_flutter/qr_flutter.dart';
import 'package:flutter_email_sender/flutter_email_sender.dart';

Future<void> sendEmailWithQRCode() async {

final String emailAddress = _emailController.text.trim();

final String qrData = 'mailto:$emailAddress';

try {

// Generate QR code

final qrCode = QrImage(

data: qrData,

version: QrVersions.auto,

size: 200.0,

);

// Store QR code image locally

final tempDir = await getTemporaryDirectory();

final filePath = '${tempDir.path}/qr_code.png';

final file = File(filePath);

await file.writeAsBytes((await qrCode.toByteData(format: ImageByteFormat.png)).buffer.asUint8List());

// Configure SMTP settings

final smtpServer = SmtpServer(

'smtp.example.com',

port: 587,

username: 'your_username',

password: 'your_password',

);

// Send email with QR code attached

final Email email = Email(

body: 'Scan the QR code to send an email.',

subject: 'QR Code Email',

recipients: [emailAddress],

isHTML: false,

attachmentPaths: [filePath],

);

await FlutterEmailSender.send(email, smtpServer);

} catch (error) {

_scaffoldKey.currentState.showSnackBar(

SnackBar(

content: Text('Failed to send email: $error'),

);

}

FF QR Code