I had a problem like that and it related to the IMAP setup which I used to view emails on the email server. I ended up re-creating a new IMAP account on Outlook for the same email address.
I think this was where it occurred but may be completely wrong ?????
-------------------- John aka NitroX
...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"