Where are you encountering problems? Exactly how do you want the Subject line to look -- does #ms# replace, precede, or follow the standard RE: prefix?
"Bert" <Bert@discussions.microsoft.com> wrote in message news:9B629EF2-9E65-45C7-96C0-C571EDC90CF9@microsoft.com...
> Hello. I am having a challenging time creating a macro in Outlook. I'm
> trying to create a macro when replying to an email, in the Subject line will
> automatically populate #ms#. Which MS is how our Mail Secure of how
> confidential data flows through.