Just as you can for emails, could we please have a feature to allow us to mark a PM as unread so it can remind us that we need to action or reply to a PM - thank you.
Just because you can't see it ... doesn't mean it isn't there - Anon.
the age of a computer is like the age of a dog: multiply by 6.
The keys on my keyboard are tired and it can happen that a missing letter transforms the meaning of a PM title.
I think this is a must function. So many times I open a message on the go, read it, and sometimes forget about it. But if I put it as unread, I would come back to it.
On a side note to this I would love if we had a messenger addition much like Facebook messenger that we can see who is online and just use it for general small talk amongst ourselves.