VB.NET

Explicitly Connect to the SMTP Server

Demonstrates the Chilkat MailMan.SmtpConnect method, which explicitly connects to the SMTP server. If SSL/TLS is required by the current property settings, the secure TLS channel is established as part of connecting. This example opens the connection.

Background: SmtpConnect performs just the connect (and TLS handshake) step, without authenticating — useful when you want fine-grained control over the connection lifecycle, or to separate connecting from authenticating (SmtpAuthenticate) for diagnostics. For everyday sending you don't need to call it: SendEmail connects automatically.

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Dim success As Boolean = False

'  Demonstrates the MailMan.SmtpConnect method, which explicitly connects to the SMTP server.
'  If SSL/TLS is required by the current property settings, the secure channel is established
'  as part of connecting.

Dim mailman As New Chilkat.MailMan

'  Configure the SMTP server connection.
mailman.SmtpHost = "smtp.example.com"
mailman.SmtpPort = 465
mailman.SmtpSsl = True

'  Explicitly connect to the SMTP server (does not authenticate).

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


Debug.WriteLine("Connected to the SMTP server.")