Delphi ActiveX

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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var
success: Integer;
mailman: TChilkatMailMan;

begin
success := 0;

//  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.

mailman := TChilkatMailMan.Create(Self);

//  Configure the SMTP server connection.
mailman.SmtpHost := 'smtp.example.com';
mailman.SmtpPort := 465;
mailman.SmtpSsl := 1;

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

success := mailman.SmtpConnect();
if (success = 0) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Connected to the SMTP server.');