In real world it might happen to send wrong emails ( contents and destination contacts) and realize, after a while, that you already clicked on Outlook send button.
To avoid this kind of mistakes you can configure your outlook to send all emails only after waiting xy amount of time. (from 1 to 120 minutes)
Original article and more details can be found at below link:
https://www.ablebits.com/office-addins-blog/2019/09/25/schedule-email-delay-delivery-outlook/
Here they are basics step by step screenshots that well explain how to get that.
