1 maildir2mbox.py .Spam Spam.txt
   2 maildir2mbox.py .Spam.Not-Spam Not-Spam.txt
   3 maildir2mbox.py .Spam.Missed-Spam Missed-Spam.txt
   4 bogofilter -s -v < Spam.txt
   5 bogofilter -s -v < Missed-Spam.txt
   6 bogofilter -n -v < Not-Spam.txt
   7 # Discard tokens older than 365d
   8 bogoutil -a 365 -m ~/.bogofilter/wordlist.db
   9 sqlite3 ~/.bogofilter/wordlist.db 'VACUUM;'

CategoryCheatSheet