Users in the users screen are agents and customers
This is not a simple thing. What goal are you trying to achieve here? Basically the info is in system.cfg_setting_val table, but it's got a few in-between tables to have meaningful data.
This will show all users email addresses - not just agents
SELECT * FROM fpscdb001_system.cfg_setting_val
where cfg_setting_id in (SELECT cfg_setting_id FROM fpscdb001_system.cfg_setting where cfg_setting_const in ('primaryEmail','secondEmail','thirdEmail'))
order by string_val
Perfect, thanks so much for the help!