Emails are stored in Outlook in the Junk folder
In Outlook, any emails are also automatically moved to the Junk folder. You can mark single emails as junk in Outlook. To do this, right-click on the desired email and click on Junk Email => Block Sender
How can the Junk Filter be turned off?
To prevent emails from being moved to the Junk folder open Start => Junk Email => Junk Email Options
Then you can disable the junk email filter as follows: