gmail-mcp-server/dist/utils/smtp-operations.js

Gmail MCP Server with on-demand authentication for SIYA/Claude Desktop. Complete Gmail integration with multi-user support and OAuth2 security.

import { appPasswordAuth } from './app-password-auth.js';
import { logger } from './api.js';
/**
 * SMTP-based email operations using App Passwords
 * This replaces Gmail API operations for sending emails
 */
export class SMTPOperations {
    /**
     * Send an email using SMTP
     */
    async sendEmail(emailMessage) {
        try {
            if (!await appPasswordAuth.isAuthenticated()) {
                throw new Error('SMTP authentication required. Please configure app password first.');
            }
            const transporter = appPasswordAuth.getSMTPTransporter();
            // Prepare email options
            const mailOptions = {
                from: appPasswordAuth.getUserEmail(),
                to: emailMessage.to.join(', '),
                subject: emailMessage.subject,
                text: emailMessage.text,
                html: emailMessage.html,
                replyTo: emailMessage.replyTo
            };
            // Add CC if provided
            if (emailMessage.cc && emailMessage.cc.length > 0) {
                mailOptions.cc = emailMessage.cc.join(', ');
            }
            // Add BCC if provided
            if (emailMessage.bcc && emailMessage.bcc.length > 0) {
                mailOptions.bcc = emailMessage.bcc.join(', ');
            }
            // Add attachments if provided
            if (emailMessage.attachments && emailMessage.attachments.length > 0) {
                mailOptions.attachments = emailMessage.attachments.map(att => ({
                    filename: att.filename,
                    content: att.content,
                    contentType: att.contentType,
                    encoding: att.encoding || 'base64'
                }));
            }
            // Send the email
            const info = await transporter.sendMail(mailOptions);
            logger.log('Email sent successfully via SMTP');
            return {
                id: info.messageId || 'smtp-' + Date.now(),
                threadId: undefined // SMTP doesn't provide thread IDs like Gmail API
            };
        }
        catch (error) {
            logger.error('Error sending email via SMTP:', error);
            throw new Error(`Failed to send email: ${error instanceof Error ? error.message : 'Unknown error'}`);
        }
    }
    /**
     * Test SMTP connection
     */
    async testConnection() {
        try {
            const transporter = appPasswordAuth.getSMTPTransporter();
            await transporter.verify();
            return true;
        }
        catch (error) {
            logger.error('SMTP connection test failed:', error);
            return false;
        }
    }
    /**
     * Reset SMTP client (for authentication changes)
     */
    resetClient() {
        // App password auth handles its own transporter reset
        logger.log('SMTP client reset');
    }
}
// Export singleton instance
export const smtpOperations = new SMTPOperations();