How to schedule an email on Outlook.com
https://www.bleepingcomputer.com/news/microsoft/outlookcom-now-lets-you-schedule-emails-for-a-later-date/
If you have ever wanted to schedule emails on Outlook on the Web (Outlook.com), you now easily do it from the web interface.
Gmail has offered its users the ability to schedule an email for some time, and Outlook desktop client users have also had this feature.