Pascal (Lazarus/Delphi)

Move Selected Emails to another Mailbox Folder

See more IMAP Examples

Downloads emails one by one in a selected mailbox, decides which emails are to be moved, and then moves the set of messages to another mailbox folder. 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,
  Chilkat.MessageSet;

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

procedure RunDemo;
var
  success: Boolean;
  imap: TImap;
  numEmails: Integer;
  mset: TMessageSet;
  email: TEmail;
  i: Integer;
  destFolder: 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;

  //  Normally, when an email is downloaded, its "Seen" flag is automatically set.
  //  We don't want our program to be interfering with the "Seen" flags.
  //  To do this, set the PeekMode to True.
  imap.PeekMode := True;

  //  After selecting the mailbox, the NumMessages property
  //  will contain the number of emails in the mailbox.
  //  When sequence numbers (not UIDs) are used to reference emails,
  //  they range from 1 to N, where N is the number of messages in the mailbox.
  //  This example will download the headers by sequence numbers.
  numEmails := imap.NumMessages;

  mset := TMessageSet.Create;

  //  Indicate that mset contains sequence numbers, not UIDs.
  mset.HasUids := False;

  //  Fetch each email and decide for each if it is to be moved
  //  to a particular other mailbox.  If so, we'll add the sequence number to
  //  the mset, and then move all emails in the mset to the other mailbox.
  email := TEmail.Create;
  i := 0;
  while i < numEmails do
    begin
      //  Fetch the email by sequence number.
      success := imap.FetchEmail(False,i + 1,False,email);
      if (success = False) then
        begin
          WriteLn(imap.LastErrorText);
          Exit;
        end;

      //  If it is decided to move the email, add the sequence number to mset, like this:
      mset.InsertId(i + 1);

    end;

  //  If there are emails in mset to be moved, then do it..
  if (mset.Count > 0) then
    begin
      destFolder := 'Inbox/SomeOtherFolder';
      //  Assuming your IMAP server supports the feature that allows for messages to be moved to another folder...
      success := imap.MoveMessages(mset,destFolder);
      if (success = False) then
        begin
          WriteLn(imap.LastErrorText);
          Exit;
        end;

    end;

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


  imap.Free;
  mset.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.