Mark as unread
Please note by far the quickest way to get a new feature is to file a Merge Request.
Description of the new feature
I'd like to be able to mark a conversation as Unread.
Doing this would allow me to track conversations that I still need to "process" (this might mean: reply; convert what people told me into a note in my journal; or any other ToDo).
While I proposed the usage of Unread status, I think that any other labeling would work just fine, at least for me.