How many times have you pressed the Send button only to realize you forgot the attachment? How about forgetting that person that was supposed to be CC’d on your important email?
If you use Outlook Web Version, there is an option to delay sending your email for up to 10 seconds. This gives you a chance to unsend quickly making adjustments to your email.
You can find this helpful feature in the Outlook Settings when logged into your Office365 portal (https://portal.office.com). Just look for the gear icon near your name in the upper right and then select “Compose and Reply” section.