We have a shared Outlook mailbox that receives a high volume of messages that gets shared among several users. However, lately when someone has read a message and it gets marked as "read", the next day when he reopens that mailbox, the same message is again marked as "unread".
Either purposely or inadvertently, something is causing those messages' status to flip back to the unread status causing much confusion and extra work. Is there a way to keep the "read" status locked down or at least determine who/what is causing this to change and rectify it? This mailbox is hared with about 10 different users. I know there are different ways to make a message appear "read" but to make it revert back to "unread" seems like it's being done manually or is something else causing this?