Node.js

SMTP Inspection

See more SMTP Examples

Examine an SMTP session to view all communications sent to the SMTP server. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    var mailman = new chilkat.MailMan();

    mailman.SmtpHost = "smtp.example.com";
    mailman.SmtpUsername = "myUsername";
    mailman.SmtpPassword = "myPassword";

    mailman.SmtpPort = 465;
    mailman.StartTLS = true;

    var email = new chilkat.Email();

    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
    var mimeStr = mailman.RenderToMime(email);
    console.log(mimeStr);

    success = mailman.SendEmail(email);
    if (success == false) {
        console.log(mailman.LastErrorText);
        return;
    }

    success = mailman.CloseSmtpConnection();
    if (success !== true) {
        console.log("Connection to SMTP server not closed cleanly.");
    }

    // Examine the SMTP session log.
    console.log("----");
    console.log("Smtp Session Log:");
    console.log(mailman.SmtpSessionLog);

    // ---------------------------------------------------
    // 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

}

chilkatExample();