implementation de nodemailer for email validation

backend/src/config/mailer.js

@@ -0,0 +1,13 @@
+const nodemailer = require("nodemailer");
+
+const transporter = nodemailer.createTransport({
+  host: process.env.MAIL_HOST,
+  port: Number(process.env.MAIL_PORT),
+  secure: false,
+  auth: {
+    user: process.env.MAIL_USER,
+    pass: process.env.MAIL_PASS,
+  },
+});
+
+module.exports = transporter;