Any way to count Mail users?
I have been tasked with collecting a number of different stats, and one of them has me a bit perplexed.
I am trying to find out how many users have opened their e-mail. Not an individual e-mail, but specifically how many people have actually clicked the icon to open their e-mail.
We are using ComExp, and I have looked around the filesystem for any clues - nothing. Looked through the documentation but similarly came up empty-handed. Tried the Sun forums - nothing.
I was thinking there might be an indicator flag stored somewhere - but can't find anything.
Anyone have any ideas?

awstats
We are using awstats to gather stats on, among other things, e-mail. In the tomcat logs, this line appears whenever somebody clicks on the email icon in Luminis:
/cp/wu/mua
You can look through your logs to see if somehting else better represents it, but that particular path seems to be in common.
email icon or total accessed?
If you just need how many mailbox accounts were accessed based on date, use mboxutil. Set the -t time back as far as you want "last accessed" time defined.
http://docs.sun.com/app/docs/doc/819-4429/acmdi?a=view
If you specifically are trying to measure the icon/in portal use, you'll need to use analytics, as described above in the awstats posts. You'd need to be saving your logs if you wanted to answer a question like "how many icon clicks in the last year" and I think by default, the logs rotate.
Long term, I'd recommend setting up google analytics as described by posts in lumdev, so that you don't have to rely on logging.