If you are using Outlook client 2013 or 2016 you may recall an email message, this feature is not available if using OWA.
How to Recall an Email
Go to your sent items and open the email in a new window.
Click on the ellipses (⋮) on the top right of the mail
Click on the Actions drop down in the ribbon.
Click Recall This Message
To recall your message altogether, so it will be deleted from the recipient’s mailbox, click Delete unread copies of this message.
To make a slight amendment to the message, click Delete unread copies and replace with a new message.
Click OK to finish. If you checked the box to receive notification if the recall succeeded or failed, you will receive an automated email informing you of the outcome.
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