Delete All IMAP Email

Demonstrates two ways to delete all email in a mailbox on an IMAP server.

Download Chilkat IMAP ActiveX

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATIMAPLib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
imap: TChilkatImap;
messageSet: CHILKATIMAPLib_TLB.IMessageSet;
i: Integer;
n: Integer;

begin

imap := TChilkatImap.Create(Self);

//  Anything unlocks the component and begins a fully-functional 30-day trial.
success := imap.UnlockComponent('Anything for 30-day trial');
if (success <> 1) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

//  Turn on session logging:
imap.KeepSessionLog := 1;

//  Connect to an IMAP server.
success := imap.Connect('mail.chilkatsoft.com');
if (success <> 1) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

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

//  Select an IMAP mailbox
success := imap.SelectMailbox('Inbox.RubyMail');
if (success <> 1) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

//  Get the complete set of Uids for email in the selected mailbox.
messageSet := imap.GetAllUids();
if (messageSet = nil ) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

//  Set the Deleted flag for each message.
//  (ExpungeAndClose must be called to finalize the delete.)
success := imap.SetFlags(messageSet,'Deleted',1);
if (success <> 1) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

//  Alternatively, the Deleted flag may be set for each UID
//  individiually, but this is less efficient:

n := messageSet.Count;
for i := 0 to n - 1 do
  begin
    success := imap.SetFlag(messageSet.GetId(i),messageSet.HasUids,'Deleted',1);
    if (success <> 1) then
      begin
        ShowMessage(imap.LastErrorText);
        Exit;
      end;
  end;

//  Expunge and close the mailbox.
success := imap.ExpungeAndClose();
if (success <> 1) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

//  Display the session log.
Memo1.Lines.Add(imap.SessionLog);

//  Disconnect from the IMAP server.
imap.Disconnect();


end;