You can use this method to decrypt emails on all devices. 

View your email as you normally would. In the examples I am using Outlook 2010 Desktop.

You may notice there is a different icon beside your email (1) this just indicates it is an encrypted message, and you have not yet opened it. 

Next you will click the text read this message

Sign in to your account

Non Bethlen emails will be able to either sign in to the email the message was sent or use a one time code. 

Then a screen opens with the message

Please feel free to share this with Bethlen Staff as well as people you're sending encrypted items to.