* `account_field_value_length`: An account field value maximum length (default: `2048`).
* `external_user_synchronization`: Enabling following/followers counters synchronization for external users.
* `cleanup_attachments`: Remove attachments along with statuses. Does not affect duplicate files and attachments without status. Enabling this will increase load to database when deleting statuses on larger instances.
+* `show_reactions`: Let favourites and emoji reactions be viewed through the API (default: `true`).
## Welcome
* `direct_message`: - welcome message sent as a direct message.