(C#) SMTP Connect and Authenticate

Demonstrates how to connect and then authenticate with an SMTP server.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.MailMan mailman = new Chilkat.MailMan();

mailman.SmtpHost = "smtp.mail.us-west-2.awsapps.com";
mailman.SmtpSsl = true;
mailman.SmtpPort = 465;

bool success = mailman.SmtpConnect();
if (success == false) {
    Debug.WriteLine(mailman.LastErrorText);
    return;
}

mailman.SmtpUsername = "john@example.com";
mailman.SmtpPassword = "the_password";

success = mailman.SmtpAuthenticate();
if (success == false) {
    Debug.WriteLine(mailman.LastErrorText);
    return;
}

Debug.WriteLine("Authenticated!");

Debug.WriteLine(mailman.SmtpSessionLog);

// Sample session log:

// 220 smtp.us-west-2.mail.awsapps.com ESMTP Amazon WorkMail SMTP Service
// EHLO SLICE<CRLF>
// 250-smtp.us-west-2.mail.awsapps.com
// 250-8BITMIME
// 250-AUTH PLAIN LOGIN
// 250 Ok
// AUTH LOGIN<CRLF>
// 334 VXNlcm5hbWU6
// am9obkBleGFtcGxlLmNvbQ==<CRLF>
// 334 UGFzc3dvcmQ6
// {PasswordOrCredentials}
// 235 Authentication successful.