How do I log in to find my other email address?
Ronb
Logging into RC will only show you the emails for the account you have logged in with and no details for any other accounts.
You'll need to look on the server to find details of the other accounts.
If you want to access emails from other accounts after logging into RC, there is a plugin here Plugin_Repository ? Roundcube Webmail (http://trac.roundcube.net/wiki/Plugin_Repository) that will enable you to do this.