Provided by: qmail_1.06-6.2~deb10u1build0.16.04.1_amd64 bug

NAME

       preline - prepend lines to message

SYNOPSIS

       in .qmailext: | preline command

DESCRIPTION

       preline  feeds  each incoming mail message through command.  At the top of each message it
       inserts a UUCP-style From_ line, a Return-Path line, and a Delivered-To line.

       preline is useful for procmail and ELM's filter, which do not understand the qmail-command
       environment variables.

OPTIONS

       -d     Do not include the Delivered-To line. You should use this option when the recipient
              of the incoming mail message is actually under remote control, but  was  sent  here
              through control/virtualdomains for manual routing.

       -f     Do  not include the From_ line. You should use this option except for commands that
              create mbox files.

       -r     Do not include the Return-Path line.

SEE ALSO

       mbox(5), qmail-command(8)

                                                                                       preline(1)