Pascal (Lazarus/Delphi)

IMAP Download All Email One at a Time

Demonstrates how to download every email in an IMAP mailbox one at a time as a MIME string or as an email object. (The MIME contains the full contents of the email including all attachments.) 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;
  bUid: Boolean;
  mimeStr: string;
  i: Integer;
  n: Integer;
  email: TEmail;

begin
  success := False;

  imap := TImap.Create;

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

  //  Connect to an IMAP server.
  //  Use TLS
  imap.Ssl := True;
  imap.Port := 993;
  success := imap.Connect('imap.example.com');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Login
  success := imap.Login('myLogin','myPassword');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Select an IMAP mailbox
  success := imap.SelectMailbox('Inbox');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Once the mailbox is selected, the NumMessages property
  //  will contain the number of messages in the mailbox.
  //  You may loop from 1 to NumMessages to
  //  fetch each message by sequence number.

  bUid := False;

  n := imap.NumMessages;
  for i := 1 to n do
    begin

      //  Download the email by sequence number.
      mimeStr := imap.FetchSingleAsMime(i,bUid);

      //  ... your application may process each MIME string...
    end;

  //  An alternative is to download each email in the form of an
  //  email object, like this:
  email := TEmail.Create;
  for i := 1 to n do
    begin

      //  Download the email by sequence number.
      success := imap.FetchEmail(False,i,bUid,email);

      //  ... your application may process the email object...

    end;

  //  Disconnect from the IMAP server.
  success := imap.Disconnect();


  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.