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Mayne

•Created by Mayne on 12/24/2024 in #workers-help

Issue: Email Reply Chain Handling Failure

Issue: Email Reply Chain Handling Failure Description When using the Workers Email service to handle email communications, the service fails to process replies to auto-generated responses. While the initial auto-reply functionality works as expected, any subsequent replies from users to these auto-generated emails result in an internal error. The worker throws an internal error when processing reply emails. The error occurs at Object.email (index.js:13934:5) with an "internal error" message. The specific error details are not accessible. Reproduction Steps 1. Configure a Workers Email handler (e.g., [email protected]) 2. Send an initial email to [email protected] 3. Receive an auto-reply from the Worker 4. Reply to the auto-reply email 5. Worker fails to process the reply with an internal error Code Example

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

export default {
    async email(message: any, env: Env, ctx: ExecutionContext) {
        const msg = createMimeMessage();
        msg.setHeader('In-Reply-To', message.headers.get('Message-ID'));
        msg.setSender({ name: 'Thank you for your contact', addr: message.to });
        msg.setRecipient(message.from);
        msg.setSubject('Email Routing Auto-reply');
        msg.addMessage({
            contentType: 'text/plain',
            data: `We got your message, your ticket number is ${self.crypto.randomUUID()}`,
        });
        console.log({
            sender: message.to,
            recipient: message.from,
        });

        const replyMessage = new EmailMessage(message.to, message.from, msg.asRaw());

        await message.reply(replyMessage);
    },
};

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

export default {
    async email(message: any, env: Env, ctx: ExecutionContext) {
        const msg = createMimeMessage();
        msg.setHeader('In-Reply-To', message.headers.get('Message-ID'));
        msg.setSender({ name: 'Thank you for your contact', addr: message.to });
        msg.setRecipient(message.from);
        msg.setSubject('Email Routing Auto-reply');
        msg.addMessage({
            contentType: 'text/plain',
            data: `We got your message, your ticket number is ${self.crypto.randomUUID()}`,
        });
        console.log({
            sender: message.to,
            recipient: message.from,
        });

        const replyMessage = new EmailMessage(message.to, message.from, msg.asRaw());

        await message.reply(replyMessage);
    },
};

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