change mail sending package

shifted from nodemaller to sendgrid/mail  , because render dont allow certen connection which is require to send mail

Author: NoB0T21

backend/package-lock.json

@@ -25,7 +25,6 @@
     "@types/jsonwebtoken": "^9.0.10",
     "@types/multer": "^1.4.13",
     "@types/node": "^24.0.3",
-    "@types/nodemailer": "^7.0.9",
     "@types/uuid4": "^2.0.3",
     "concurrently": "^9.1.2",
     "dotenv-cli": "^8.0.0",
@@ -39,6 +38,7 @@
     "typescript-eslint": "^8.34.0"
   },
   "dependencies": {
+    "@sendgrid/mail": "^8.1.6",
     "@supabase/supabase-js": "^2.50.0",
     "bcrypt": "^6.0.0",
     "cookie-parser": "^1.4.7",
@@ -50,7 +50,6 @@
     "jsonwebtoken": "^9.0.2",
     "mongoose": "^8.16.0",
     "multer": "^2.0.1",
-    "nodemailer": "^8.0.0",
     "uuid4": "^2.0.3",
     "ws": "^8.18.2"
   }

backend/package.json

@@ -1,23 +1,15 @@
 import Redis from "ioredis";
-import nodemailer from "nodemailer";
+import sgMail from "@sendgrid/mail";
 import dotenv from "dotenv"
 dotenv.config();
 
-const transporter = nodemailer.createTransport({
-    host: "smtp.gmail.com",
-    port: 465,
-    secure: true,
-    auth: {
-        user: process.env.EMAIL_USER,
-        pass: process.env.EMAIL_PASS,
-    },
-});
+sgMail.setApiKey(process.env.SENDGRID_API_KEY!);
 const redis = new Redis(process.env.REDIS_URL||'');
 
 async function sendEmail(to: string) {
-  await transporter.sendMail({
-    from: process.env.EMAIL_USER,
+  await sgMail.send({
     to,
+    from: process.env.EMAIL_USER!,
     subject: "Welcome back",
     text: "Hello Aryan 👋",
   });