But if you are using Microsoft Exchange with Outlook and you make a mistake or you don’t want the recipient to read it, providing that they have not read the message yet you can recall it. To recall a message without sending a revised message, do the following: In Mail, in the Navigation Pane, click Sent Items. Open the message that you want to recall. On the Message tab, in the Move group, click Actions, and then click Recall This Message (this also works if you have a Microsoft ID like Outlook, Hotmail or a Live account added to Outlook) http://i.michaelmknight.co.uk/images/2016/02/18/recall.png Or click Resend when you have revised your message and the one you sent previously with be replaced with no duplicate message.