The Outlook default behavior is to mark a message a read as soon as
- it appeared in the viewing pane and
- another message was selected.
This leads to confusing behavior: For example, when I read a message in the reading pane and then move it to another folder (I have just read it and want to archive it), it is still marked as "unread" (because I did not select another message first).
Apparently, one of the first things many people do is to change that behavior to something more sensible:
In a comment to this superuser question, someone asked:
Can anyone tell why the default behavior is the way it is. I just can't find a use case where this is the desired behavior.
I wondered the same, so I would like to ask the UX crowd: Does this default behavior make sense? As far as I can see, most people who care about these things either set their Outlook to "immediately mark as read" (as above) or "never mark as read" (for those who use read/unread as a todo/done marker and don't use folders).