diff --git a/src/main.py b/src/main.py
index 4e9c771..d046769 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,5 +1,10 @@
 #!/usr/bin/env python
 
+from src.notifications.service import make_notification_service
+from src.services.email import get_service as get_email_service
+from src.services.users import get_service as get_user_service
+from src.infra.db import get_database
+from src.infra.users import UserRepoImpl
 from waitress import serve
 from flask import Flask
 import argparse
@@ -15,6 +20,16 @@ def create_app(name: str, config: Config) -> Flask:
 
     app = Flask(name)
 
+    email_service = get_email_service(config.email)
+    notification_service = make_notification_service(email_service)
+    database = get_database(config.database)
+    user_repo = UserRepoImpl(database)
+    user_service = get_user_service(user_repo)
+
+    app.extensions['email'] = email_service
+    app.extensions['notifications'] = notification_service
+    app.extensions['user_service'] = user_service
+
     if config.host:
         app.config['SERVER_NAME'] = config.host