Pascal (Lazarus/Delphi)

GMail App Password

See more GMail SMTP/IMAP/POP Examples

Demonstrates how to authenticate using an app password with GMail for IMAP and SMTP. 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.Imap,
  Chilkat.MailMan;

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

procedure RunDemo;
var
  success: Boolean;
  imap: TImap;
  mailman: TMailMan;

begin
  success := False;

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

  //  Starting May 30, 2022, Google will no longer support the use of third-party apps or devices 
  //  which ask you to sign in to your Google Account using only your username and password.

  //  Instead of authenticating with your GMail username/password, a GMail user can create an App Password
  //  and then login using their username/app_password.   It's literally the same, except it allows a GMail
  //  account owner to isolate passwords to specific applications.

  //  The Gmail account owner would first need to make sure she has 2-Step Verification setup for her account.
  //  Note: The 2FA verification is not a factor when authenticating with an app password. The 2FA is required
  //  to setup app passwords in the Google account console.  See Sign in with App Passwords

  //  After the GMail account owner has setup his app password, he simply uses the app password instead of his GMail account password.

  //  For example:
  imap := TImap.Create;

  imap.Ssl := True;
  imap.Port := 993;

  success := imap.Connect('imap.gmail.com');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  success := imap.Login('user@gmail.com','srnyyvqajocnsvdp');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  WriteLn('IMAP Success!');

  //  For SMTP..

  mailman := TMailMan.Create;

  mailman.SmtpHost := 'smtp.gmail.com';

  mailman.SmtpUsername := 'user@gmail.com';
  mailman.SmtpPassword := 'srnyyvqajocnsvdp';

  mailman.SmtpSsl := True;
  mailman.SmtpPort := 465;

  success := mailman.SmtpConnect();
  if (success = False) then
    begin
      WriteLn(mailman.LastErrorText);
      Exit;
    end;

  success := mailman.SmtpAuthenticate();
  if (success = False) then
    begin
      WriteLn(mailman.LastErrorText);
      Exit;
    end;

  WriteLn('SMTP Success!');


  imap.Free;
  mailman.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.