Pascal (Lazarus/Delphi)

Download POP3 Email using UIDLs

Demonstrates how to download POP3 email by first getting the complete set of UIDLs and then downloading email by calling FetchByUIDL for each UIDL. 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.StringTable,
  Chilkat.Email,
  Chilkat.MailMan;

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

procedure RunDemo;
var
  success: Boolean;
  mailman: TMailMan;
  stUidls: TStringTable;
  email: TEmail;
  count: Integer;
  i: Integer;

begin
  success := False;

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

  //  The mailman object is used for receiving (POP3) 
  //  and sending (SMTP) email.
  mailman := TMailMan.Create;

  //  Set the POP3 server's hostname
  mailman.MailHost := 'pop.example.com';

  //  Set the POP3 login/password.
  mailman.PopUsername := 'myLogin';
  mailman.PopPassword := 'myPassword';

  stUidls := TStringTable.Create;
  success := mailman.FetchUidls(stUidls);
  if (success = False) then
    begin
      WriteLn(mailman.LastErrorText);
      Exit;
    end;

  email := TEmail.Create;

  count := stUidls.Count;
  i := 0;
  while i < count do
    begin
      //  Download the full email.
      success := mailman.FetchByUidl(stUidls.StringAt(i),False,0,email);
      if (success = False) then
        begin
          WriteLn(mailman.LastErrorText);
          Exit;
        end;

      WriteLn(i);
      WriteLn('From: ' + email.From);
      WriteLn('Subject: ' + email.Subject);

      i := i + 1;
    end;

  mailman.Pop3EndSession();


  mailman.Free;
  stUidls.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.