Open Outlook and go to the folder you want to clean up
Click the first email you want to delete
Hold Shift and click the last email to select a range
Hold Ctrl and click individual emails to select multiple separate messages
Press Delete to move the selected emails to Deleted Items
To delete all emails in a folder, press Ctrl+A to select all
Press Delete to remove the selected emails
To permanently delete them, open Deleted Items
Select the emails you want to remove permanently
Press Shift+Delete
Confirm the deletion if prompted
To delete emails by sender, use the search bar to find the sender
Select all search results
Press Delete or Shift+Delete
To delete emails by date, sort or filter the folder by date
Select the emails you want to remove
Press Delete
Empty the Deleted Items folder if you want to free up space
Right-click Deleted Items
Select Empty Folder
Confirm the action if prompted