MAC Instructions
Start a new message.
You can add the Encryption button to your ribbon by click on the 3 dots and Customize Toolbar.
Click on Encryption and hold, drag to the toolbar and drop.
Start a new message, click on Encryption, please select one.
Windows Instructions
Start a new message. Then click on Options, Encryption drop-down menu.
Outlook onmicrosoft.com Instructions
Start a new message and click on Options.
The recipient will see this in their inbox
The recipient clicks on Read the message and a web page will open (could take up to 10 seconds to load the page)
Choose Sign in with One-time passcode, and you will receive a second email with the One-Time passcoe
They will see this message.
They will receive a passcode at the same email address (have them check Spam folder if they don't see it). Have them copy and paste.
Then the message will decrypt.