diff --git a/src/pages/api/emailPostulacion/send.ts b/src/pages/api/emailPostulacion/send.ts
index cc735dc..72ec10d 100644
--- a/src/pages/api/emailPostulacion/send.ts
+++ b/src/pages/api/emailPostulacion/send.ts
@@ -1,5 +1,5 @@
 import type { APIRoute } from "astro";
-import { appendToSheet } from "../lib/googleSheets";
+import { appendToSheet, emailExists } from "../lib/googleSheets";
 export const prerender = false;
 
 export const POST: APIRoute = async ({ request }) => {
@@ -21,6 +21,14 @@ export const POST: APIRoute = async ({ request }) => {
       return Response.redirect("/?error=datos", 303);
     }
 
+    const exists = await emailExists(email);
+    if (exists) {
+      return Response.json({
+        success: false,
+        message: 'El email ya existe en la base de datos',
+      })
+    }
+
     const dataSend = {
       nombres,
       apellidos,
diff --git a/src/pages/api/lib/googleSheets.ts b/src/pages/api/lib/googleSheets.ts
index f333aaa..b963bda 100644
--- a/src/pages/api/lib/googleSheets.ts
+++ b/src/pages/api/lib/googleSheets.ts
@@ -11,7 +11,7 @@ const auth = new google.auth.GoogleAuth({
 const sheets = google.sheets({ version: 'v4', auth });
 const SPREADSHEET_ID = import.meta.env.GOOGLE_SHEET_ID;
 
-async function emailExists(email: string): Promise<boolean> {
+export async function emailExists(email: string): Promise<boolean> {
   const formula = `=COUNTIF(G:G,"${email}")`;
 
   // Escribir fórmula en celda auxiliar
@@ -39,20 +39,6 @@ async function emailExists(email: string): Promise<boolean> {
 
 export async function appendToSheet(values: any[]) {
   try {
-    const email = values[6]; // índice donde está el email en tu array
-
-    if (!email) {
-      throw new Error('Email requerido');
-    }
-
-    const exists = await emailExists(email);
-    if (exists) {
-      return {
-        success: false,
-        message: 'El email ya existe en la base de datos',
-      };
-    }
-
     await sheets.spreadsheets.values.append({
       spreadsheetId: SPREADSHEET_ID,
       range: 'DATABASE!A2:H2',