Mark emial as confidential

we use a 3rd party to encrypt our outgoing email due to Health Information requirements. we have to flag the outgoing mail as confidential for the process to work. is there a way to mark outgoing email as confidential?

I seem to remember that MS Outlook allows you to do that, but I can’t recall any other email client that does. eM Client certainly does not have that feature at all.

You could ask the encryption vendor for a list of compatible clients.