I use this to open the file and parse it with the module Email::Simple;.
This is the code from my "email parse script". I need to extend this script with a DKIM check.
#! /usr/bin/perl
use strict;
use warnings;
use Email::Simple;
use DBI;
use File::Copy;
use Date::Parse;
use DateTime;
use Path::Tiny qw(path);
[..]
open (MESSAGE, "< $ARGV[0]") || die "Couldn't open email $ARGV[0]\n";
undef $/;
$raw_email = <>;
close MESSAGE;
my $mail = Email::Simple->new($raw_email);
my $from_header = $mail->header("From");
my $to_header = $mail->header("To");
my $date_header = $mail->header("Date");
my $aol_header = $mail->header("Authentication-Results");
[...]
$ARGV is the filename form perl script.pl filename and $raw_email contains the text file.
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