To recall and replace a message
1.
In the folder pane on the left of the Outlook window, choose
the Sent Items folder.
2.
Open the message that you want to recall. You must double-click
to open the message. Selecting the message so it appears in the reading pane
won't allow you to recall the message.
3.
If you have the Classic Ribbon, from the Message tab,
select Actions > Recall This Message.

If you have the Simplified Ribbon, select the Message tab and then select More commands (...). Point to Actions and select Recall
This Message.
Notes:
* If you don’t see the Recall This Message command, you probably don’t have an Exchange account or the feature isn’t available within your organization.
* You can't recall a message that's protected by Azure Information Protection.
* You can't recall a message in Outlook on the web.
4. Select Delete unread copies of this message or delete
unread copies and replace with a new message, and then select OK.
5. If you’re sending a replacement message, compose the message,
and then select Send.
To check on the recall
After
submitting a recall request, usually less than 30 seconds later, you will
get an email notification with the subject.