Thanks Noel. It worked, a rule had been created that moved some emails to
Calendar. Solved the mystery.

"Noel All" wrote:

Do an Advanced Search on that Folder for Unread items to determine what they
are.
"KAT" wrote in message
...
I am getting a blue number in brackets appearing next to Calendar on my
Folder List (exactly like you would get if you had a new message in your
Inbox). Does anyone know what this means - it does not coincide with a
new
appointment/meeting or anything like that as I've checked. I am now up to
number 11. Help!