I'll give you a little more information,

Im using thunderbird, i have something like 200 accounts with filters setup to drop all of the " leads" email in to the appropriate "leads" folders per account.

Now everyday i maualy go in to each lead folder under each account and count how many "lead" emails there are, this is droped in to an excell for report that is handed out daily...
i don't have access to the mail servers, they are hosted by our clients.