parses a procmail-generated $LOGFILE and displays
a summary about the messages delivered to all folders
(total size, average size, nr of messages).
The $LOGFILE is truncated to zero length, unless the
option is used.
Exit code 0 if mail arrived, 1 if no mail arrived.
keep logfile intact
long display format
merge any errors into one line
use the old logfile
terse display format
silent in case of no mail
Customise to your heart's content, this program is only provided as a
This manual page was written by Santiago Vila <email@example.com>
for the Debian GNU/Linux distribution (but may be used by others).