Here is how you can find your users email , database and ftp details from psa database .

mysql> use psa ;

Database changed

EMAIL ACCOUNT DETAILS

mysql> SELECT mail.mail_name, accounts.password, domains.name FROM mail, accounts, domains WHERE domains.id=mail.dom_id AND mail.account_id=accounts.id;

DATABASE USER DETAILS

mysql> SELECT domains.name, data_bases.name, data_bases.type , db_users.login,accounts.password FROM domains, data_bases, db_users, accounts WHERE domains.id=data_bases.dom_id AND data_bases.id=db_users.db_id AND db_users.account_id=accounts.id;

FTP / SYSTEM USER DETAILS

mysql> SELECT domains.name, sys_users.login, accounts.password, sys_users.home, sys_users.shell, sys_users.quota FROM domains, accounts, hosting, sys_users WHERE domains.id=hosting.dom_id AND hosting.sys_user_id=sys_users.id AND sys_users.account_id=accounts.id;

Enjoy!