diff --git a/.gitignore b/.gitignore
index 3d457d9..cc0666d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,9 +19,6 @@ lerna-debug.log*
 
 # Variables de entorno
 # -------------------------------
-# Nunca subas tus claves de API, contraseñas de BD, etc.
-# Crea un archivo .env.example con las variables vacías para guiar a otros desarrolladores.
-.env
 .env.local
 .env.development.local
 .env.test.local
diff --git a/Backend/GestionIntegral.Api/.env b/Backend/GestionIntegral.Api/.env
new file mode 100644
index 0000000..aab9c6b
--- /dev/null
+++ b/Backend/GestionIntegral.Api/.env
@@ -0,0 +1,12 @@
+# ================================================
+# VARIABLES DE ENTORNO PARA LA CONFIGURACIÓN DE CORREO
+# ================================================
+# El separador de doble guion bajo (__) se usa para mapear la jerarquía del JSON.
+# MailSettings:SmtpHost se convierte en MailSettings__SmtpHost
+
+MailSettings__SmtpHost="mail.eldia.com"
+MailSettings__SmtpPort=587
+MailSettings__SenderName="Club - Diario El Día"
+MailSettings__SenderEmail="alertas@eldia.com"
+MailSettings__SmtpUser="alertas@eldia.com"
+MailSettings__SmtpPass="@Alertas713550@"
\ No newline at end of file
diff --git a/Backend/GestionIntegral.Api/GestionIntegral.Api.csproj b/Backend/GestionIntegral.Api/GestionIntegral.Api.csproj
index 808f888..4042988 100644
--- a/Backend/GestionIntegral.Api/GestionIntegral.Api.csproj
+++ b/Backend/GestionIntegral.Api/GestionIntegral.Api.csproj
@@ -9,6 +9,7 @@
   <ItemGroup>
     <PackageReference Include="AspNetCore.HealthChecks.SqlServer" Version="9.0.0" />
     <PackageReference Include="Dapper" Version="2.1.66" />
+    <PackageReference Include="DotNetEnv" Version="3.1.1" />
     <PackageReference Include="MailKit" Version="4.13.0" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="9.0.4" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.3" />
diff --git a/Backend/GestionIntegral.Api/Program.cs b/Backend/GestionIntegral.Api/Program.cs
index 064ad81..0ec1aaa 100644
--- a/Backend/GestionIntegral.Api/Program.cs
+++ b/Backend/GestionIntegral.Api/Program.cs
@@ -24,6 +24,10 @@ using GestionIntegral.Api.Models.Comunicaciones;
 using GestionIntegral.Api.Services.Comunicaciones;
 using GestionIntegral.Api.Data.Repositories.Comunicaciones;
 
+// Carga las variables de entorno desde el archivo .env al inicio de la aplicación.
+// Debe ser la primera línea para que la configuración esté disponible para el 'builder'.
+DotNetEnv.Env.Load();
+
 var builder = WebApplication.CreateBuilder(args);
 
 // --- Registros de Servicios ---
diff --git a/Backend/GestionIntegral.Api/appsettings.json b/Backend/GestionIntegral.Api/appsettings.json
index ad27f49..2748571 100644
--- a/Backend/GestionIntegral.Api/appsettings.json
+++ b/Backend/GestionIntegral.Api/appsettings.json
@@ -16,11 +16,11 @@
   },
   "AllowedHosts": "*",
   "MailSettings": {
-  "SmtpHost": "mail.eldia.com",
-  "SmtpPort": 587,
-  "SenderName": "Club - Diario El Día",
-  "SenderEmail": "alertas@eldia.com",
-  "SmtpUser": "alertas@eldia.com",
-  "SmtpPass": "@Alertas713550@"
-}
+    "SmtpHost": "",
+    "SmtpPort": 0,
+    "SenderName": "",
+    "SenderEmail": "",
+    "SmtpUser": "",
+    "SmtpPass": ""
+  }
 }
\ No newline at end of file