(Delphi ActiveX) Subscribe to Mailboxes and List Subscribed Mailboxes

Demonstrates how to list subscribed mailboxes, and unsubscribe/subscribe to a mailbox.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
imap: TChilkatImap;
success: Integer;
refName: WideString;
wildcardedMailbox: WideString;
mboxes: IMailboxes;
i: Integer;

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

imap := TChilkatImap.Create(Self);

// Connect to an IMAP server.
// Use TLS
imap.Ssl := 1;
imap.Port := 993;
success := imap.Connect('imap.someMailServer.com');
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Login
success := imap.Login('myLogin','myPassword');
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// First examine the already subscribed mailboxes.
refName := '';
wildcardedMailbox := '*';

// Alternatively, the ListMailboxes method can be called to list all mailboxes (both subscribed and unsubscribed).
mboxes := imap.ListSubscribed(refName,wildcardedMailbox);
if (imap.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

for i := 0 to mboxes.Count - 1 do
  begin
    Memo1.Lines.Add(mboxes.GetName(i));
  end;

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

// Sample output.

// INBOX
// INBOX/recent
// INBOX/misc
// INBOX/misc/solutions
// ...
// Outbox
// Deleted Items
// Sent Items
// Drafts
// Junk E-mail
// Trash
// Sent
// Templates

// Let's unsubscribe to "INBOX/misc/solutions".
success := imap.Unsubscribe('INBOX/misc/solutions');
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Get the list of subscribed mailboxes again to verify that "INBOX/misc/solutions" is missing.
mboxes := imap.ListSubscribed('','INBOX/misc*');
if (imap.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

for i := 0 to mboxes.Count - 1 do
  begin
    Memo1.Lines.Add(mboxes.GetName(i));
  end;

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

// Re-subscribe to "INBOX/misc/solutions".
success := imap.Subscribe('INBOX/misc/solutions');
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Get the list of subscribed mailboxes again to verify that "INBOX/misc/solutions" is back in the list.
mboxes := imap.ListSubscribed('','INBOX/misc*');
if (imap.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

for i := 0 to mboxes.Count - 1 do
  begin
    Memo1.Lines.Add(mboxes.GetName(i));
  end;

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

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