Recalling an Email in Outlook (Wrong Recipient) and Extending Undo Sending Message

Recall a Message

1. Once you've sent the email, you can go to your sent items folder and find the email there. Double click it to open it up

2. Go to Recall message.

3. In the prompt, click OK. Outlook will now try to recall the message from the recipient's mailbox.

Undo a Sending Message

1. Go to the  in the upper right corner.

2. In the window that appears, go to Mail in the left menu. Now look for Compose and reply.

3. Here, you'll find Undo Send if you scroll down further. This will allow you a grace period of 5 to 10 seconds after sending an email, during which time you can undo sending it. Set it to your desired time, then click Save.

Here's a Video for the Step-by-Step process