My wife and I have separate email accounts with ATT, we also have window live accounts. For some reason her att email is coming in to my windows live email and am not sure why.

Whenever I log into check my emails in windows live email box Her ATT email account is showing up and I can read her emails ( I don't ). And it for some reason puts all her emails in the trash bin on the ATT email account.

Why is this happening and how can I stop getting her emails in my windows live account

Thank you