Pascal (Lazarus/Delphi)

Fetch a Single IMAP Message into an Email Object

Demonstrates the Chilkat Imap.FetchEmail method, which downloads one message (or its headers) into an Email object. The arguments are headerOnly, the message id, bUid (UID vs sequence number), and the Email that receives the message. This example fetches message 1 in full and reads its subject and from.

Background: FetchEmail parses a downloaded message into a fully navigable Email object, giving you its subject, sender, body, and attachments. Passing headerOnly = true downloads just the headers — a fast way to build a message-list preview — after which you can fetch the full message on demand. Because a mailbox must be selected first, and fetching a full message can set the \Seen flag, use ExamineMailbox instead of SelectMailbox when you must not change read state.

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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.Email;

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

procedure RunDemo;
var
  success: Boolean;
  imap: TImap;
  email: TEmail;

begin
  success := False;

  //  Demonstrates the Imap.FetchEmail method, which downloads one message (or its headers) into
  //  an Email object.  The 1st argument is headerOnly, the 2nd is the message id, the 3rd
  //  (bUid) selects UID vs sequence number, and the 4th is the Email that receives the message.

  imap := TImap.Create;

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

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

  success := imap.SelectMailbox('Inbox');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Download message sequence number 1 in full.  headerOnly=False, bUid=False.
  email := TEmail.Create;
  success := imap.FetchEmail(False,1,False,email);
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

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

  success := imap.Disconnect();
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;


  imap.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.