Both times the answer has either been,
Considering there has been request of this feature for 11 years now since MailEnable Version 5 and that it was said "its on our to do list" since then. I would think this feature would have finally been enabled or at least some setting/configuration hidden somewhere.
Can we get someone from MailEnable to weigh in on this with a timeline ? Are we expecting this to finally be an option in the current MailEnable 10 series or is it already setup in a yet to be announced MailEnable 11 ?