Email retention

package.json

@@ -35,6 +35,7 @@
     "@prisma/client": "^5.7.0",
     "@stripe/stripe-js": "^8.0.0",
     "@types/d3-scale": "^4.0.9",
+    "@types/nodemailer": "^7.0.11",
     "axios": "^1.13.2",
     "bcryptjs": "^2.4.3",
     "chart.js": "^4.4.0",
@@ -55,6 +56,7 @@
     "lucide-react": "^0.562.0",
     "next": "^14.2.35",
     "next-auth": "^4.24.5",
+    "nodemailer": "^8.0.4",
     "papaparse": "^5.4.1",
     "posthog-js": "^1.332.0",
     "qr-code-styling": "^1.9.2",