Se agregó el módulo para mandar emails masivos

src/excel/excel.controller.ts

@@ -0,0 +1,14 @@
+import { Controller, Get } from '@nestjs/common';
+import { ExcelService } from './excel.service';
+
+@Controller('excel')
+export class ExcelController {
+  constructor(private readonly excelService: ExcelService) {}
+
+  @Get('read-emails')
+  async getEmails() {
+    const filePath = './src/excel_Usuarios/usuarios_fake.xlsx'; 
+    const emails = this.excelService.readEmailsFromExcel(filePath);
+    return { emails };
+  }
+}