Can an automatic message be added when sending encrypted e-mail?

[Carnitram]

Is there a way to have a standard message automatically entered into either
the subject line or body of the text whenever the encryption option is
selected? In other words, for every encrypted e-mail I need the word
"Proprietary" to be included somewhere in the message automatically.

 

[Eric Legault [MVP - Outlook]]

There's nothing in the Outlook Object Model to work with encryption and
digital signatures, and nothing in CDO either AFAIK. So if you can't find
out that a message is encrypted/signed, you're plain out of luck.