diff --git a/src/mail/mail.service.ts b/src/mail/mail.service.ts
index 0360dce..ff6a8c9 100644
--- a/src/mail/mail.service.ts
+++ b/src/mail/mail.service.ts
@@ -19,7 +19,7 @@ export class MailService {
     
     
     
-    this.transporter = nodemailer.createTransport({
+   /*  this.transporter = nodemailer.createTransport({
       host: 'smtp-relay.gmail.com',
       port: 587,
       secure: false,
@@ -28,6 +28,18 @@ export class MailService {
         user: process.env.USER_GMAIL,
         pass: process.env.PASS_GMAIL,
       },
+    }); */
+
+    this.transporter = nodemailer.createTransport({
+      host: 'smtp.gmail.com',          // o smtp‑relay.gmail.com (ver punto 2)
+      port: 587,
+      secure: true,                   // TLS STARTTLS
+      auth: { user: process.env.USER_GMAIL, pass: process.env.APP_PASS },
+      pool: true,                      // <‑‑ activa reuse
+      maxConnections: 1,               // una sola conexión viva
+      maxMessages: 100,                // reabrir después de 100 envíos
+      rateDelta: 2000,                 // ventana 1 s
+      rateLimit: 1                     // máx. 5 mensajes/seg
     });