Open Outlook
Click the Search box at the top
Type a keyword, sender name, subject, or phrase
Press Enter
Use search filters to narrow results
Select a folder before searching if needed
Search by sender with from: name@example.com
Search by subject with subject: keyword
Search by date with received: this week
Search by attachment with hasattachments:yes
Search by unread status with isread:no
Search within a specific mailbox or folder
Use Advanced Search or Search Tools for more options
Clear the search box to start a new search