If you routinely forget to copy people when sending an email, create a rule in Microsoft Outlook. Then you can forget about it without worry.

Why does my Outlook not allow rules? If rules are not working in your Microsoft Outlook app, it might be the case that your server administrator has disallowed you from using Outlook rules.

2] Create a custom rule to move or delete emails A popular workaround is to set up an Outlook rule that automatically processes note-to-self messages.