This is why Microsoft Outlook offers a dedicated encryption option. Not only does it secure the message, but it also keeps it within the Microsoft 365 network all the way until final delivery.

For that, Open the new Outlook app and start composing a new email. Then, switch to the Options tab and find the lock or Encrypt option. Click on it and select the Do Not Forward option.

It Will Encourage More People to Use Private Browsing Options If you use ... of secure email providers that encrypt your accounts. If you’re unhappy with how Outlook approaches your security ...