se agregó una validación al middleware

se agrego la app para enviar correos

mail/admin.py

+from django.contrib import admin
+
+# Register your models here.

mail/apps.py

+from django.apps import AppConfig
+
+
+class MailConfig(AppConfig):
+    name = 'mail'

mail/models.py

+from django.db import models
+
+# Create your models here.

mail/tests.py

+from django.test import TestCase
+
+# Create your tests here.