Pascal (Lazarus/Delphi)

SMTP XOAUTH2 Authentication

See more SMTP Examples

Demonstrates how to authenticate using an OAuth2 access token. This example assumes you have already obtained the access token and now wish to use it in an SMTP session. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.MailMan,
  Chilkat.Email;

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

procedure RunDemo;
var
  success: Boolean;
  oauth2_access_token: string;
  mailman: TMailMan;
  email: TEmail;

begin
  success := False;

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

  oauth2_access_token := 'some_previously_obtained_token';

  mailman := TMailMan.Create;

  //  Set the properties for the SMTP server, whatever they may be..
  mailman.SmtpHost := 'smtp.example.com';
  mailman.SmtpPort := 587;
  mailman.StartTLS := True;

  mailman.SmtpUsername := 'myLogin';
  mailman.OAuth2AccessToken := oauth2_access_token;

  //  Create a new email object
  email := TEmail.Create;

  email.Subject := 'This is a test';
  email.Body := 'This is a test';
  email.From := 'Joe Example <joe@example.com>';
  email.AddTo('Chilkat Admin','admin@chilkatsoft.com');

  //  Connect to the server indicated by the SmtpHost property
  success := mailman.SmtpConnect();
  if (success <> True) then
    begin
      WriteLn(mailman.LastErrorText);
      Exit;
    end;

  //  Authenticate using XOAUTH2 (using the OAuth2AccessToken)
  success := mailman.SmtpAuthenticate();
  if (success <> True) then
    begin
      WriteLn(mailman.LastErrorText);
      Exit;
    end;

  success := mailman.SendEmail(email);
  if (success <> True) then
    begin
      WriteLn(mailman.LastErrorText);
      Exit;
    end;

  WriteLn('Email sent.');

  mailman.CloseSmtpConnection();


  mailman.Free;
  email.Free;

end;

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

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.