Setting a Passcode
Setting a passcode for your outgoing emails is the simplest solution to keeping your communications secure.
In order to do this, first compose your email by clicking on the "New Message" button in the left corner of your "Mail" tab. Then, enter your recipient, subject, and message.
When you're ready to send your email, click on the "Encrypt" button, located in the top left of your message window.
In the first box of the pop-up window, enter your desired passcode. Your recipient will need to know this passcode in order to open your message. If you would like, you can also enter a passcode hint for your recipient to see in the box directly below.
When you have entered your passcode, simply click "OK" at the bottom of the pop-up window.