We are currently running a system upgrade to improve your overall experience.
Trend Micro Community will be back online on Saturday, October 19.
In the meantime, you can contact Technical Support here: https://esupport.trendmicro.com/en-us/home/pages/technical-support/contact/home.aspx
See you soon!
I'm afraid that Trend Micro does not have a feature that will allow you to send an encrypted email to make it secure. But if you are using Outlook, it has a built-in feature that will let you send out encrypted emails. You may refer to this article below for more details.