The popular mail modules, don't seem to have any way to send by "chunks" in a callback

I'm not quite sure what you're trying to do here. SMTP is a one shot affair. You negotiate the envelope and then send the entire message after the DATA command. There's no "chunking" going on.

Do you mean that you're having trouble holding the entire body in memory (e.g. as a scalar)?

If that's the case, something low-level like Net::SMTP will do the trick. What you want to do is build up your MIME message and write it out to a file. Then you set up your N::S object by emitting the appropriate headers, and the heart of the matter is something like:

my $smtp = Net::SMTP->new;
...
$smtp->data();
open BODY, '<', 'message.mime' or die "bleah: $!\n";
while( <BODY> ) {
    chomp;
    $smtp->datasend( $_ );
}
$smtp->dataend();
$smtp->quit();

[download]

Since you just wrote your file, you then know how many lines it contains. In the above loop, you can compare the number of lines read to the total number of lines and thereby calculate your progress through the file and display it as a percentage for your overworked postal worker.

Is that what you meant?

- another intruder with the mooring in the heart of the Perl

In reply to Re: Sending mail with a callback to track progress by grinder
in thread Sending mail with a callback to track progress by zentara

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