Perl

SMTP Inspection

See more SMTP Examples

Examine an SMTP session to view all communications sent to the SMTP server. Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

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

$mailman->SmtpHost('smtp.example.com');
$mailman->SmtpUsername('myUsername');
$mailman->SmtpPassword('myPassword');

$mailman->SmtpPort(465);
$mailman->StartTLS(1);

my $email = Chilkat2::Email->new;

$email->Subject('This is a test');
$email->Body('This is a test');
$email->From('Alex <alex@example.com>');
$email->AddTo('Christoph', 'christoph@example2.com');
$email->AddBcc('Victor', 'victor@example3.com');

# Generate the MIME that is sent when SendEmail is called
my $mimeStr = $mailman->RenderToMime($email);
print $mimeStr, "\n";

my $success = $mailman->SendEmail($email);
if (!$success) {
    print $mailman->LastErrorText, "\n";
    exit;
}

$success = $mailman->CloseSmtpConnection();
if (!$success) {
    print "Connection to SMTP server not closed cleanly.\n";
}

# Examine the SMTP session log.
print "----\n";
print "Smtp Session Log:\n";
print $mailman->SmtpSessionLog, "\n";

# ---------------------------------------------------
# Sample output:
# ---------------------------------------------------

# MIME-Version: 1.0
# Date: Fri, 06 Mar 2026 16:21:00 -0600
# Message-ID: <A5DC25990C93EC2676F4FBB2BB3BFA9EB34FF9D3@CHILKAT25>
# Content-Type: text/plain; charset=us-ascii; format=flowed
# Content-Transfer-Encoding: 7bit
# X-Priority: 3 (Normal)
# Subject: This is a test
# From: Alex <alex@example.com>
# To: Christoph <christoph@example2.com>
# Bcc: Victor <victor@example3.com>
#
# This is a test
# ----
# Smtp Session Log:
# 220 smtp.example.com ESMTP Amazon WorkMail SMTP Service
# EHLO MYCOMPUTER<CRLF>
# 250-smtp.example.com
# 250-8BITMIME
# 250-AUTH PLAIN LOGIN
# 250 Ok
# AUTH LOGIN<CRLF>
# 334 VXNlcm5hbWU6
# YWRtaW5AY2hpbGthdHNvZnQuY29t<CRLF>
# 334 UGFzc3dvcmQ6
# {PasswordOrCredentials}
# 235 Authentication successful.
# MAIL FROM:<alex@example.com><CRLF>
# 250 Ok
# RCPT TO:<christoph@example2.com><CRLF>
# 250 Ok
# RCPT TO:<victor@example3.com><CRLF>
# 250 Ok
# DATA<CRLF>
# 354 End data with <CR><LF>.<CR><LF>
# {388 bytes} <--- The MIME source of the email (examined via RenderToMime) was sent here.
# <CRLF>.<CRLF>
# 250 Ok
# QUIT<CRLF>
# 221 Bye