email forwarding

How to prevent email forwarding in Outlook and Gmail
recently, following gmail, outlook also implemented new features for its users, both of which offer a feature to prevent forwarding email. if this feature is what you are looking for, please read the following article to know how to use it to prevent recipients from forwarding your email.
Microsoft will encrypt email, preventing mail forwarding in Outlook
as promised, microsoft is releasing security-related features on outlook.com mail application.