Report an email Message as "Not Junk"

Use the built-in Report button in Outlook on the web to report messages that aren't junk
In Outlook on the web, select one or more messages in the Junk Email folder, select Report, and then select Not junk in the dropdown list.

Open

Based on the User reported settings in your organization, the messages are sent to the reporting mailbox, to Microsoft, or both. The messages are also moved out of Junk Email to the Inbox.