Open Outlook
Go to Sent Items
Open the sent email
Select File
Select Info
Click Resend or Recall
Choose Recall This Message
Select Delete unread copies of this message
Optionally select Delete unread copies and replace with a new message
Click OK
Check the recall status in your mailbox
Use Undo Send immediately after sending if available in Outlook web or new Outlook
Set a delay rule in Outlook to prevent immediate sending in the future