I want to setup a custom rule on Outlook 2016 so that I cannot send an email to a specific person from a specific account.
I know this sounds crazy, but I have two accounts on Outlook 2016, say from CompanyA and CompanyB. I don't want to send emails from the account with CompanyA to people in CompanyB, by mistake (pretty embarrassing).
I understand Office 2016 has the option to setup rules, but I didn't find a specific rule to effect the above. How can I do so? Please advise.