Agent reports

Hi there,

Is there a way to figure out how to find the email addresses linked to various agents? I have a lot of agents and if someone leaves the company, or someone asks to have the same reports as John, for example, I struggle to do this. It isn't possible to go through all my agents to find out. Also if there are some emails that are no longer valid and I don't knwo they have left the company it would be nice to be able to clean these or be aware of email addresses that no longer work. Are