diff --git a/backend/apps/authentication/serializers.py b/backend/apps/authentication/serializers.py
index c8cad44..78882da 100644
--- a/backend/apps/authentication/serializers.py
+++ b/backend/apps/authentication/serializers.py
@@ -2,6 +2,7 @@ from django.contrib.auth.password_validation import validate_password as django_
 from django.core.exceptions import ValidationError
 from rest_framework import serializers
 from apps.user.models import User
+from apps.tasks import send_email
 
 
 class RegisterSerializer(serializers.ModelSerializer):
@@ -33,5 +34,6 @@ class RegisterSerializer(serializers.ModelSerializer):
             validated_data["password"]
         )
         
-        
+        send_email.delay(user.pk)        
+
         return user
\ No newline at end of file
diff --git a/backend/apps/authors/models.py b/backend/apps/authors/models.py
index f4980e5..d0f263f 100644
--- a/backend/apps/authors/models.py
+++ b/backend/apps/authors/models.py
@@ -1,6 +1,6 @@
-from django.db import models
-from apps.user.models import User
+# from django.db import models
+# from apps.user.models import User
 
-class Author(models.Model):
-    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name="Authors")
-    name = models.CharField(max_length=255)
\ No newline at end of file
+# class Author(models.Model):
+#     user = models.ForeignKey(User, on_delete=models.CASCADE, related_name="Authors")
+#     name = models.CharField(max_length=255)
\ No newline at end of file
diff --git a/backend/apps/authors/urls.py b/backend/apps/authors/urls.py
index 70042c4..0203402 100644
--- a/backend/apps/authors/urls.py
+++ b/backend/apps/authors/urls.py
@@ -1,9 +1,9 @@
 from rest_framework.routers import DefaultRouter
 
-from apps.authors.views import AuthorsViewSet
+# from apps.authors.views import AuthorsViewSet
 
 urlpatterns = []
 
-router = DefaultRouter()
-router.register("", viewset=AuthorsViewSet)
-urlpatterns += router.urls
\ No newline at end of file
+# router = DefaultRouter()
+# router.register("", viewset=AuthorsViewSet)
+# urlpatterns += router.urls
\ No newline at end of file
diff --git a/backend/apps/authors/views.py b/backend/apps/authors/views.py
index ba890c7..7fff913 100644
--- a/backend/apps/authors/views.py
+++ b/backend/apps/authors/views.py
@@ -1,20 +1,20 @@
-from rest_framework import viewsets
+# from rest_framework import viewsets
 
-from apps.authors.models import Author
-from apps.authors.serializers import AuthorSerializer
-from rest_framework import viewsets 
-from rest_framework.permissions import IsAuthenticated
-from rest_framework_simplejwt.authentication import JWTAuthentication
+# from apps.authors.models import Author
+# from apps.authors.serializers import AuthorSerializer
+# from rest_framework import viewsets 
+# from rest_framework.permissions import IsAuthenticated
+# from rest_framework_simplejwt.authentication import JWTAuthentication
 
-class AuthorsViewSet(viewsets.ModelViewSet):
-    queryset = Author.objects.select_related("shelf")
-    serializer_class = AuthorSerializer
+# class AuthorsViewSet(viewsets.ModelViewSet):
+#     queryset = Author.objects.select_related("shelf")
+#     serializer_class = AuthorSerializer
 
-    authentication_classes = [JWTAuthentication]
-    permission_classes = [IsAuthenticated]
+#     authentication_classes = [JWTAuthentication]
+#     permission_classes = [IsAuthenticated]
 
-    def get_queryset(self):
-        return self.queryset.filter(
-            shelf__user_id=self.request.user.pk
-        )
+#     def get_queryset(self):
+#         return self.queryset.filter(
+#             shelf__user_id=self.request.user.pk
+#         )
 
diff --git a/backend/apps/books/models.py b/backend/apps/books/models.py
index 19bac53..025efd0 100644
--- a/backend/apps/books/models.py
+++ b/backend/apps/books/models.py
@@ -1,11 +1,11 @@
 from django.db import models
 
 from apps.shelves.models import Shelf
-from apps.authors.models import Author
+# from apps.authors.models import Author
 from apps.user.models import User
 
 class Book(models.Model):
     user = models.ForeignKey(User, on_delete=models.CASCADE, related_name="Authors")
-    authors = models.ManyToManyField(Author, related_name="books")
+    # authors = models.ManyToManyField(Author, related_name="books")
     name = models.CharField(max_length=255)
     isbn = models.CharField(max_length=13)
\ No newline at end of file
diff --git a/backend/apps/tasks.py b/backend/apps/tasks.py
new file mode 100644
index 0000000..ea45376
--- /dev/null
+++ b/backend/apps/tasks.py
@@ -0,0 +1,11 @@
+from celery import shared_task 
+
+
+@shared_task
+def send_email(user_pk):
+    print(user_pk)
+
+    # if sended
+    # zmienna info itp, jesli sie straci
+
+    return None
\ No newline at end of file
diff --git a/backend/config/__init__.py b/backend/config/__init__.py
index e69de29..612eebb 100644
--- a/backend/config/__init__.py
+++ b/backend/config/__init__.py
@@ -0,0 +1,3 @@
+from config.celery import app as celery_app
+
+__all__ = ('celery_app',)
\ No newline at end of file
diff --git a/backend/config/celery.py b/backend/config/celery.py
new file mode 100644
index 0000000..6f88b04
--- /dev/null
+++ b/backend/config/celery.py
@@ -0,0 +1,11 @@
+import os
+
+from celery import Celery
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.django.dev')
+
+app = Celery('library')
+
+app.config_from_object('django.conf:settings', namespace='CELERY')
+
+app.autodiscover_tasks()
\ No newline at end of file
diff --git a/backend/config/django/base.py b/backend/config/django/base.py
index 8267c17..dc548ad 100644
--- a/backend/config/django/base.py
+++ b/backend/config/django/base.py
@@ -131,3 +131,5 @@ USE_TZ = True
 # https://docs.djangoproject.com/en/6.0/howto/static-files/
 
 STATIC_URL = "static/"
+
+from config.settings.celery import *
\ No newline at end of file
diff --git a/backend/config/settings/__init__.py b/backend/config/settings/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/backend/config/settings/celery.py b/backend/config/settings/celery.py
new file mode 100644
index 0000000..94e7bf5
--- /dev/null
+++ b/backend/config/settings/celery.py
@@ -0,0 +1,3 @@
+from config.env import env
+
+CELERY_BROKER_URL = env("CELERY_BROKER_URL")
\ No newline at end of file