Pascal (Lazarus/Delphi)

How to Copy IMAP Mail to another IMAP Server

Demonstrates how to copy the entire contents of an IMAP mailbox to another IMAP server. 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.StringBuilder;

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

procedure RunDemo;
var
  success: Boolean;
  imapSrc: TImap;
  imapDest: TImap;
  sbMime: TStringBuilder;
  seqNum: Integer;

begin
  success := False;

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

  imapSrc := TImap.Create;

  //  Connect to our source IMAP server.
  success := imapSrc.Connect('imap.example.com');
  if (success = False) then
    begin
      WriteLn(imapSrc.LastErrorText);
      Exit;
    end;

  //  Login to the source IMAP server
  success := imapSrc.Login('admin@chilkatsoft.com','myPassword');
  if (success = False) then
    begin
      WriteLn(imapSrc.LastErrorText);
      Exit;
    end;

  imapDest := TImap.Create;

  //  Connect to our destination IMAP server.
  success := imapDest.Connect('mail.example-code.com');
  if (success = False) then
    begin
      WriteLn(imapDest.LastErrorText);
      Exit;
    end;

  //  Login to the destination IMAP server
  success := imapDest.Login('myLogin','myPassword');
  if (success = False) then
    begin
      WriteLn(imapDest.LastErrorText);
      Exit;
    end;

  //  Select an IMAP mailbox on the source IMAP server
  success := imapSrc.SelectMailbox('Inbox');
  if (success = False) then
    begin
      WriteLn(imapSrc.LastErrorText);
      Exit;
    end;

  //  After selecting a mailbox, the NumMessages property will
  //  be updated to reflect the total number of emails in the mailbox:
  WriteLn(imapSrc.NumMessages);

  //  The emails in the mailbox will always have sequence numbers
  //  ranging from 1 to NumMessages.

  //  This example will copy the first 10 messages using sequence numbers
  sbMime := TStringBuilder.Create;

  for seqNum := 1 to 10 do
    begin
      sbMime.Clear();
      success := imapSrc.FetchSingleAsMimeSb(seqNum,False,sbMime);
      if (success = False) then
        begin
          WriteLn(imapSrc.LastErrorText);
          Exit;
        end;

      success := imapDest.AppendMimeWithFlagsSb('Inbox',sbMime,False,False,False,False);
      if (success = False) then
        begin
          WriteLn(imapDest.LastErrorText);
          Exit;
        end;
    end;

  //  Disconnect from the IMAP servers.
  success := imapSrc.Disconnect();
  success := imapDest.Disconnect();


  imapSrc.Free;
  imapDest.Free;
  sbMime.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.