Sample code for 30+ languages & platforms
Delphi DLL

Create Email Folder (sub-Mailbox)

How to create a new email folder (sub-mailbox). (In GMail, folders are called "labels". This example would create a new "label" in GMail.)

Chilkat Delphi DLL Downloads

Delphi DLL
uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Imap;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
imap: HCkImap;

begin
success := False;

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

imap := CkImap_Create();

CkImap_putSsl(imap,True);
CkImap_putPort(imap,993);

// Connect to an IMAP server.
success := CkImap_Connect(imap,'imap.gmail.com');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

// Login
success := CkImap_Login(imap,'myLogin','myPassword');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

// Create the new email folder (sub-mailbox) on the IMAP server.
// If no folder path is provided, the new folder is a sub-mailbox of Inbox.
success := CkImap_CreateMailbox(imap,'newFolder');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

// (In GMail, folders are called "labels".  
// This example would create a new "label" in GMail.)

// Now create a sub-folder under "newFolder".
// Make sure to use the proper separator char for your IMAP server.
// The separator char used here is "/".   It is typically "/" or ".".
// The SeparatorChar property contains the separator char
// that should be used for the current IMAP session.
success := CkImap_CreateMailbox(imap,'newFolder/subFolder_A');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

Memo1.Lines.Add('Success.');

CkImap_Dispose(imap);

end;