diff --git a/conf/config.yml b/conf/config.yml
index 4ea9c3c..633e08a 100644
--- a/conf/config.yml
+++ b/conf/config.yml
@@ -98,15 +98,15 @@ cors:
 
 mailer:
   # Whether to enable the mailer or not. If it is disabled, all users are enabled right away and password reset is not possible.
-  enabled: false
+  enabled: true
   # SMTP Host
-  host: ""
+  host: "localhost"
   # SMTP Host port
-  port: 587
+  port: 25
   # SMTP username
-  username: "user"
+  username: "vikunja"
   # SMTP password
-  password: ""
+  password: "__SMTP_USER_PWD__"
   # Wether to skip verification of the tls certificate on the server
   skiptlsverify: false
   # The default from address when sending emails
diff --git a/manifest.json b/manifest.json
index 196e6f8..a236d12 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Self-hosted To-Do list application",
         "fr": "Application de liste de tâches auto-hébergée"
     },
-    "version": "0.18.1~ynh2",
+    "version": "0.18.1~ynh3",
     "url": "https://vikunja.io/",
     "upstream": {
         "license": "GPL-3.0",
diff --git a/scripts/install b/scripts/install
index 6812e5f..87fcf8b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -123,6 +123,8 @@ ynh_add_nginx_config
 #=================================================
 ynh_script_progression --message="Adding a configuration file..." --weight=1
 
+smtp_user_pwd=$(ynh_string_random --length=24)
+ynh_app_setting_set --app=$app --key=path --value=$smtp_user_pwd
 redis_db=$(ynh_redis_get_free_db)
 ynh_add_config --template="../conf/config.yml" --destination="/etc/vikunja/config.yml"
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 1c09288..de27cd2 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -26,11 +26,11 @@ db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
 timezone="$(cat /etc/timezone)"
 secret=$(ynh_string_random --length=32)
+smtp_user_pwd=$(ynh_app_setting_get --app=$app --key=smtp_user_pwd)
 
 #=================================================
 # CHECK VERSION
 #=================================================
-ynh_script_progression --message="Checking version..."
 
 upgrade_type=$(ynh_check_app_version_changed)