Chances are the person will read it before you can send the recall request. This feature is definitely not something you should rely on. If you’re in a bind because of an email you regret sending, it’s possible that Outlook’s recall feature can help you remove the email before the recipients read it.
The Recall option is not available for a message displayed in the Reading Pane. Double-click on the message you want to retract to open it in a separate window. To recall a message sent in error, here are the steps to perform: Go to the Sent Items folder. The tutorial provides the detailed guidance on how to retrieve email in Outlook after it has been sent, explains the key factors of recall success and describes a couple of alternatives.