Pascal (Lazarus/Delphi)

Scan for Emails with Attachments and Save Attachments to Files

Scan for emails with attachments and save 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.EmailBundle,
  Chilkat.Imap,
  Chilkat.Email,
  Chilkat.MessageSet;

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

procedure RunDemo;
var
  success: Boolean;
  imap: TImap;
  fetchUids: Boolean;
  messageSet: TMessageSet;
  bundle: TEmailBundle;
  headersOnly: Boolean;
  fullEmail: TEmail;
  emailHeader: TEmail;
  i: Integer;
  numAttach: Integer;
  uidStr: string;
  uid: Integer;
  j: Integer;
  filename: string;

begin
  success := False;

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

  imap := TImap.Create;

  //  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;

  //  We can choose to fetch UIDs or sequence numbers.
  fetchUids := True;

  //  Get the message IDs of all the emails in the mailbox
  messageSet := TMessageSet.Create;
  success := imap.QueryMbx('ALL',fetchUids,messageSet);
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Fetch the email headers into a bundle object:
  bundle := TEmailBundle.Create;
  headersOnly := True;
  success := imap.FetchMsgSet(headersOnly,messageSet,bundle);
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Scan for emails with attachments, and save the attachments
  //  to a sub-directory.
  fullEmail := TEmail.Create;
  emailHeader := TEmail.Create;
  i := 0;
  while i < bundle.MessageCount do
    begin
      //  The bundle contains email headers..
      bundle.EmailAt(i,emailHeader);

      //  Does this email have attachments?
      //  Use GetMailNumAttach because the attachments
      //  are not actually in the email object because
      //  we only downloaded headers.
      numAttach := imap.GetMailNumAttach(emailHeader);

      if (numAttach > 0) then
        begin
          //  Download the entire email and save the
          //  attachments. (Remember, we 
          //  need to download the entire email because
          //  only the headers were previously downloaded.

          //  The ckx-imap-uid header field is added when
          //  headers are downloaded.  This makes it possible
          //  to get the UID from the email object.
          uidStr := emailHeader.GetHeaderField('ckx-imap-uid');
          uid := StrToInt(uidStr);

          success := imap.FetchEmail(False,uid,True,fullEmail);
          if (success = False) then
            begin
              WriteLn(imap.LastErrorText);
              Exit;
            end;

          success := fullEmail.SaveAllAttachments('attachmentsDir');

          for j := 0 to numAttach - 1 do
            begin
              filename := imap.GetMailAttachFilename(emailHeader,j);
              WriteLn(filename);
            end;

        end;

      i := i + 1;
    end;

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


  imap.Free;
  messageSet.Free;
  bundle.Free;
  fullEmail.Free;
  emailHeader.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.