I have a question about emails. I believe someone is reading my email that I receive at work and opening it with their home computer. Is there anyway I can tell? We were told to give our passwords to the assistant (just in case our superiors needed to access our computers if we were out of the office) and I think that this person got my password.
I know this is a strange question.
Conversations that I have had with this person make me believe that he is reading my mail.
Can someone help me out?

Thanks