I have just migrated from Outlook 2010 to Outlook 2016. In Outlook 2010 I had icons (mostly envelope icons) for all different message classes/types, such as unread message, read (but not replied/forwarded) message, replied message, forwarded message, auto-reply message, etc.
In Outlook 2016, I still have icons for some message classes/types, like replied, forwarded and OOO. But I no longer have icons for "unread" messages and "read (but not replied/forwarded)" messages. Is this just a "feature" of Outlook 2016 that these types of item no longer have icons, or is there a way to bring them back?