(VB.NET) 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.

Dim mailman As New Chilkat.MailMan


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

Dim success As Boolean = mailman.SmtpConnect()
If (success = False) Then
    Debug.WriteLine(mailman.LastErrorText)
    Exit Sub
End If


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

success = mailman.SmtpAuthenticate()
If (success = False) Then
    Debug.WriteLine(mailman.LastErrorText)
    Exit Sub
End If


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.