How can I get my O2 Email account password? Or do I have a email account?

How can I get my O2 Email account password? Or do I have a email account?

I am a user with a ongoing Handy Tarif with O2 "Free 15", and I can't login to the Email service using my MeinO2 password. How can I set my Email password? Or do I have a email account?

I need an ISP email for some stuff, would really want to know if O2 can provide me one or not...