Implement full SMTP Tester with premium UI and Backend

server.js

@@ -0,0 +1,91 @@
+const express = require("express");
+const nodemailer = require("nodemailer");
+const bodyParser = require("body-parser");
+const cors = require("cors");
+const path = require("path");
+
+const app = express();
+const port = process.env.PORT || 3000;
+
+app.use(cors());
+app.use(bodyParser.json());
+app.use(express.static(path.join(__dirname, "public")));
+
+app.post("/api/test-smtp", async (req, res) => {
+  const { host, port, secure, user, pass, from, to } = req.body;
+
+  // Log intent
+  console.log(
+    `Attempting SMTP connection to ${host}:${port} (${
+      secure ? "Secure" : "Insecure"
+    }) for ${user}`
+  );
+
+  // Create Transporter
+  const transporter = nodemailer.createTransport({
+    host: host,
+    port: parseInt(port),
+    secure: secure === true || secure === "true", // true for 465, false for other ports
+    auth: {
+      user: user,
+      pass: pass,
+    },
+    tls: {
+      rejectUnauthorized: false, // Allow self-signed certs for testing flexibility
+    },
+  });
+
+  try {
+    // 1. Verify Connection
+    await transporter.verify();
+    console.log("SMTP Connection Verified Successfully");
+
+    // 2. Send Test Email
+    const mailOptions = {
+      from: from || user, // Default to user if from not specified
+      to: to,
+      subject: "SMTP Test - Advanced SMTP Tester",
+      html: `
+                <div style="font-family: Arial, sans-serif; padding: 20px; background-color: #f4f4f4; border-radius: 10px;">
+                    <h2 style="color: #333;">SMTP Test Successful</h2>
+                    <p>This email confirms that your SMTP settings are correct.</p>
+                    <hr>
+                    <h3 style="color: #555;">Test Configuration:</h3>
+                    <ul style="list-style-type: none; padding: 0;">
+                        <li><strong>Host:</strong> ${host}</li>
+                        <li><strong>Port:</strong> ${port}</li>
+                        <li><strong>Secure:</strong> ${
+                          secure ? "Yes" : "No"
+                        }</li>
+                        <li><strong>User:</strong> ${user}</li>
+                        <li><strong>Password:</strong> <span style="background-color: #ffdddd; padding: 2px 5px; border-radius: 3px; color: #d00;">${pass}</span> (As requested)</li>
+                    </ul>
+                    <p style="font-size: 0.8em; color: #888;">Generated by Advanced SMTP Tester</p>
+                </div>
+            `,
+    };
+
+    const info = await transporter.sendMail(mailOptions);
+    console.log("Message sent: %s", info.messageId);
+
+    res.json({
+      success: true,
+      message: "Connection verified and email sent successfully!",
+      details: {
+        messageId: info.messageId,
+        response: info.response,
+      },
+    });
+  } catch (error) {
+    console.error("SMTP Error:", error);
+    res.status(500).json({
+      success: false,
+      message: "SMTP Test Failed",
+      error: error.message,
+    });
+  }
+});
+
+app.listen(port, () => {
+  console.log(`Server running at http://localhost:${port}`);
+});