126 Email MCP Server

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { z } from "zod"; import nodemailer from "nodemailer"; // Configuration schema for 126 email SMTP service with SSL export const configSchema = z.object({ debug: z.boolean().default(false).describe("Enable debug logging"), smtp_host: z.string().default("smtp.126.com").describe("SMTP server host"), smtp_port: z.number().default(465).describe("SMTP server port (465 for SSL)"), smtp_secure: z.boolean().default(true).describe("Use SSL/TLS (true for SSL)"), email_user: z.string().describe("126 email address for authentication"), email_password: z.string().describe("126 email password or app-specific password"), from_name: z.string().optional().describe("Display name for sender"), }); export default function createStatelessServer({ config, }: { config: z.infer<typeof configSchema>; }) { const server = new McpServer({ name: "126 Email MCP Server", version: "1.0.0", }); // Create SMTP transporter with SSL const createTransporter = () => { return nodemailer.createTransport({ host: config.smtp_host, port: config.smtp_port, secure: config.smtp_secure, // true for SSL (port 465) auth: { user: config.email_user, pass: config.email_password, }, tls: { // For SSL connections, we can be more strict rejectUnauthorized: config.smtp_secure } }); }; // Add email sending tool server.tool( "send_email", "Send email using 126 SMTP service", { to: z.string().describe("Recipient email address"), subject: z.string().describe("Email subject"), text: z.string().optional().describe("Plain text content"), html: z.string().optional().describe("HTML content"), cc: z.string().optional().describe("CC email addresses (comma separated)"), bcc: z.string().optional().describe("BCC email addresses (comma separated)"), }, async ({ to, subject, text, html, cc, bcc }) => { try { if (!text && !html) { throw new Error("Either text or html content must be provided"); } const transporter = createTransporter(); const mailOptions = { from: config.from_name ? `"${config.from_name}" <${config.email_user}>` : config.email_user, to, subject, text, html, cc: cc ? cc.split(',').map(email => email.trim()) : undefined, bcc: bcc ? bcc.split(',').map(email => email.trim()) : undefined, }; if (config.debug) { console.log("Sending email with options:", JSON.stringify(mailOptions, null, 2)); } const info = await transporter.sendMail(mailOptions); return { content: [ { type: "text", text: `Email sent successfully!\nMessage ID: ${info.messageId}\nTo: ${to}\nSubject: ${subject}` } ], }; } catch (error) { const errorMessage = error instanceof Error ? error.message : "Unknown error occurred"; return { content: [ { type: "text", text: `Failed to send email: ${errorMessage}` } ], isError: true, }; } } ); // Add email verification tool server.tool( "verify_smtp_connection", "Verify SMTP connection to 126 email service", {}, async () => { try { const transporter = createTransporter(); await transporter.verify(); return { content: [ { type: "text", text: "SMTP connection verified successfully! Ready to send emails." } ], }; } catch (error) { const errorMessage = error instanceof Error ? error.message : "Unknown error occurred"; return { content: [ { type: "text", text: `SMTP connection failed: ${errorMessage}` } ], isError: true, }; } } ); return server.server; }