Perl

Send MIME Bytes from a BinData via SMTP

Demonstrates the Chilkat MailMan.SendMimeBd method, which sends an email from caller-supplied MIME bytes held in a BinData. The arguments are the from address, the recipient list (the SMTP envelope recipients), and the BinData containing the MIME. This example loads a .eml file into a BinData and sends it.

Important: When sending caller-supplied MIME, ensure the Message-ID header is unique for each message. Sending MIME whose Message-ID was previously used can cause the message to be silently discarded as a duplicate by mail servers — see chilkatsoft.com/email_duplicate_message_id.asp.

Background: This is the binary counterpart to SendMime (which takes MIME as a string). Working from a BinData is the right choice when the message's raw bytes come straight from a file, a database blob, or a network stream — it delivers them byte-for-byte with no charset conversion that could alter the original, which matters because MIME can carry binary transfer encodings.

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Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

# Demonstrates the MailMan.SendMimeBd method, which sends an email from caller-supplied MIME
# bytes held in a BinData.  The arguments are the from address, the recipient list (the SMTP
# envelope recipients), and the BinData containing the MIME.

my $mailman = Chilkat2::MailMan->new;

# Configure the SMTP server connection.
$mailman->SmtpHost('smtp.example.com');
$mailman->SmtpPort(465);
$mailman->SmtpSsl(1);
$mailman->SmtpUsername('user@example.com');
$mailman->SmtpPassword('myPassword');

# Load the MIME bytes to send.  Here we read a .eml file, but the bytes could come from
# any source.
my $bdMime = Chilkat2::BinData->new;
my $success = $bdMime->LoadFile('qa_data/eml/message.eml');
if (!$success) {
    print $bdMime->LastErrorText, "\n";
    exit;
}

# IMPORTANT: When sending caller-supplied MIME, make sure the Message-ID header is unique
# for each message.  Sending MIME that contains a Message-ID that was previously sent can
# cause the message to be silently discarded as a duplicate by mail servers.  For details,
# see: https://www.chilkatsoft.com/email_duplicate_message_id.asp

# Send the MIME bytes to the envelope recipient(s).
$success = $mailman->SendMimeBd('alice@example.com', 'bob@example.com', $bdMime);
if (!$success) {
    print $mailman->LastErrorText, "\n";
    exit;
}

print "MIME email sent.\n";

# Note: The path "qa_data/eml/message.eml" is a relative local filesystem path,
# relative to the current working directory of the running application.

# Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
# connects and authenticates -- using the property settings above -- whenever a server
# operation requires it.  Calling the explicit connect/authenticate methods can still be
# helpful to determine whether a failure occurs while connecting or while authenticating.