tsk tsk
You'd never catch me getting in that state
(yeah, right!)
Is there any disk space for more storage / bigger inboxes? 100+ messages would be much better!
50 inbox and 100 storage should be more than enough - its what I have, and I know I get about 10 times more PMs than you 
You monitor what's going in and out of our individual inboxes?
I have scripts that generate certain statistics, which PM wise, count number of msgs, number of unread msg, number of msgs newer than a specified time etc.
Some of these scripts are automated for 'day to day' stuff (eg, backups (a complex one), Google submission (this is a killer script, kills the server when it runs in middle of night, takes about 30m to run), etc). Other scripts are for fault finding, performance monitoring, analysis of hits and referrers, search engine efficiency and the like.
I hope that answers you question, and possibly concerns?