Mail::Sender will probally do what you want.

#!/usr/bin/perl -w

use strict;
use Mail::Sender;

# How these are defined is left as an exercise to the reader
my ($from, $to, $subject, $message, $file, $server);

# Create our message handler
ref (my $mail = new Mail::Sender { smtp => $server } ) or die "Mail er
+ror: $Mail::Sender::Error\n";

# Message header
$mail->Open({ from => $from, to => $to, subject => $subject }) or die 
+"Mail error: $Mail::Sender::Error\n";

$mail->Body;

# Add the "intro" message
$mail->SendLineEnc("$message\n");

# Open $file, adding contents to message
open(FILE, "$file");

while(<FILE>) { $mail->SendLineEnc("$_\n"); }

# Close & send message

$mail->Close;
[download]

Alternately, if you wanted to send the file as and attachment, you could do:

$mail->Attach({ description => 'Programming Perl 101 Syllabus', 
                ctype => 'text/plain', 
                encoding => '7bit', 
                disposition => 'attachment; filename="syllabus.txt"; t
+ype="Text file"', 
                file => 'syllabus.txt' } );
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instead of opening and reading the file.

$ echo '$0 & $0 &' > foo; chmod a+x foo; foo;