Re: Automatically append subject line with string
Sorry forgot to mention, It needs to be on the client side.
In a nutshell,
I have deployed an e-mail encryption appliance that encrypts any outgoing e-mails that meet a certain criteria, in our case a subject string.
The requirements are not to enforce this but to give the user a choice (Otherwise we could amend the rule on the appliance itself or use the transport rule you mention)