Email Workers wrong message ID

import { EmailMessage } from 'cloudflare:email';
import { createMimeMessage } from 'mimetext';

async function webhook(message) {
    await fetch('https://discord.com/api/webhooks/xxx', {
        method: 'post',
        headers: {
            'Content-Type': 'application/json',
        },
        body: JSON.stringify({
            username: 'webhook',
            content: `${message}`,
        }),
    });
}

export default {
    async email(message, env, ctx) {
        const messageID = message.headers.get('Message-ID');
        const messageText = `Hello

This is an automated reply to your email.`;

        await webhook(`ID: ${messageID} Received email from ${message.from} to ${message.to}`);
        try {
            await message.forward('admin@mail.xxx.ch');
            await webhook(`ID: ${messageID} Forwarded email from ${message.from}`);
        } catch (e) {
            await webhook(`ID: ${messageID} Failed to forward email from ${message.from} with error ${e}`);
        }
        const msg = createMimeMessage();
        msg.setHeader('In-Reply-To', message.headers.get('Message-ID'));
        msg.setSender({ name: 'no-reply', addr: 'noreply@xxx.ch' });
        msg.setRecipient(message.from);
        msg.setSubject('Probable typo in email address');
        msg.addMessage({
            contentType: 'text/plain',
            data: `${messageText}`,
        });

        var replyMessage = new EmailMessage('noreply@xxx.ch', message.from, msg.asRaw());
        try {
            await message.reply(replyMessage);
            await webhook(`ID: ${messageID} Replied to email from ${message.from} to ${message.to}`);
        } catch (e) {
            await webhook(`ID: ${messageID} Failed to reply to email from ${message.from} with error ${e}`);
        }
    },
};