Thank you for your answer.
The first check box in quick view is activated. So when I get new mails they must be found in the "not readed mails" section. But there are no new mails in it. So I assume that live mail gives me a wrong message.
In the meantime I was able to close in the problem. I...
I open Windows live Mail. So I have to put in the passwords of all my 3 Accounts (POP and IMAP). Windows live Mail calls all my new E-Mails now then after that at the bottom right the following text appears: for example 3 new E-Mails.
So I expect that now I can find 3 new E-Mails in all of my...