Let's say you're using Outlook.com and just sent an email message to someone by mistake. How do you recall it?
Unfortunately, you can't.
Message recall is not available for users with email addresses ending in @outlook.com, @hotmail.com, @live.com, or @msn.com. These are web-based email services where once you send that email message, it's gone from your email server and out of your control.
Message recall is available in Outlook 2016. See Retract or replace an email message after it's sent for instructions.