Client area: on the login page click Forgot Password? and follow the link we email you.
Plesk: you do not need a separate password: use Log in to Plesk from your plan in the client area (see "How do I log in to Plesk?").
An email address: see "How do I change the password of a mailbox?" in the Email section.
Stuck? Open a support request and we will do it with you.
