diff --git a/conf/parameters.yml b/conf/parameters.yml
index 5b5f803..a3e4f01 100644
--- a/conf/parameters.yml
+++ b/conf/parameters.yml
@@ -1,69 +1,35 @@
-# This file is a "template" of what your parameters.yml file should look like
+# This file is auto-generated during the composer install
 parameters:
-    # Uncomment these settings or manually update your parameters.yml
-    # to use docker-compose
-    #
-    # database_driver: %env.database_driver%
-    # database_host: %env.database_host%
-    # database_port: %env.database_port%
-    # database_name: %env.database_name%
-    # database_user: %env.database_user%
-    # database_password: %env.database_password%
-
     database_driver: pdo_mysql
     database_host: 127.0.0.1
     database_port: ~
     database_name: __DB_NAME__
     database_user: __DB_USER__
     database_password: __DB_PWD__
-    # For SQLite, database_path should be "%kernel.project_dir%/data/db/wallabag.sqlite"
     database_path: null
     database_table_prefix: null
     database_socket: null
-    # with PostgreSQL and SQLite, you must set "utf8"
     database_charset: utf8mb4
-
-    domain_name: https://__DOMAIN____PATH__
-    server_name: "Your wallabag instance"
-
-    #mailer_dsn: smtp://user:pass@__DOMAIN__:25
-    mailer_dsn: sendmail://default
-
+    domain_name: 'https://__DOMAIN____PATH__'
+    server_name: 'Your wallabag instance'
+    mailer_dsn: smtp://__APP__:__MAIL_PWD__@__DOMAIN__:25
     locale: en
-
-    # A secret key that's used to generate certain security-related tokens
     secret: __DESKEY__
-
-    # two factor stuff
-    twofactor_auth: true
     twofactor_sender: no-reply@wallabag.org
-
-    # fosuser stuff
     fosuser_registration: false
     fosuser_confirmation: true
-
-    # how long the access token should live in seconds for the API
     fos_oauth_server_access_token_lifetime: 3600
-    # how long the refresh token should life in seconds for the API
     fos_oauth_server_refresh_token_lifetime: 1209600
-
     from_email: no-reply@wallabag.org
-
     rss_limit: 50
-
-    # RabbitMQ processing
     rabbitmq_host: localhost
     rabbitmq_port: 5672
     rabbitmq_user: guest
     rabbitmq_password: guest
     rabbitmq_prefetch_count: 10
-
-    # Redis processing
     redis_scheme: tcp
     redis_host: localhost
     redis_port: 6379
     redis_path: null
     redis_password: null
-
-    # sentry logging
     sentry_dsn: ~
diff --git a/manifest.toml b/manifest.toml
index 0b56101..9f4f6b9 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -54,6 +54,7 @@ ram.runtime = "50M"
     autoupdate.asset = ".*\\.tar\\.gz"
 
     [resources.system_user]
+    allow_email = true
 
     [resources.install_dir]