I have a customer that uses gmail with a POP configuration, and a user name starting with "recent:<email addr>. Recent mode gives him too many emails (30 days worth).
He wants to log in from 2 different PCs and get only the last 10 days of email (he is using Outlook 2007 on 1 machine, Windows Mail on the other). If this means all emails older than 10 days are gone from his gmail altogether, that's fine. If he sets the parameter to delete from server after 10 days, this does not seem to work.