Random entry – here’s a procmail script that will automatically squirrel away any e-mails with [ ] in the subject into a mail folder with the name of the contents of the [ ] (after stripping out any nasty characters):
SUBJ = `formail -xSubject | expand | \ sed -e 's/.*\[(.*)\].*/\1/' -e 's/ /_/g' \ -e 's/[^_a-zA-Z0-9]//g'` :0 H * ^Subject:.*\[.*\].* lists/${SUBJ}