I have something similiar to what you want, though you'll have to hack
it up a bit to allow for gzipped dirs and such.
I have a "d" key macro:
macro index d s=archive<enter>
this saves all mesasges to my archive folder instead of deleting
them. Then I have a shell script:
#!/bin/sh
set $(date)
date=$2-$3-$6
dir=archive-$date
cd /home/john/Mail
mv archive $dir
exit 0
which moves my archive to a dated folder. I set up a cron tab to run
the shell script every 15 day (I get a *lot* of mail). You could
easily make that directory gzipped.
Hope this helps.
--
Jonathan Pennington | A computer without Windows
[EMAIL PROTECTED] | is like a dog without
http://www.coastalgeology.org | bricks tied to its head.