Hello, Today plesk released minor update #23. After this automatic update all mail tab and settings are missing. Also there isnt mail server and settings field in tools and settings page. Making change(checking) from custom view not help. Update was. Plesk Onyx Version 17.0.17 Update #23, last updated on April 20, 2017 03:24 AM Also in services management page shows all services are off but everything works fine.