Delphi ActiveX

Delete All IMAP Email

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

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
success: Integer;
imap: TChilkatImap;
messageSet: TMessageSet;
i: Integer;
n: Integer;

begin
success := 0;

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

imap := TChilkatImap.Create(Self);

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

// Connect to an IMAP server.
// Use TLS
imap.Ssl := 1;
imap.Port := 993;
success := imap.Connect('imap.example.com');
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Login
success := imap.Login('myLogin','myPassword');
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Select an IMAP mailbox
success := imap.SelectMailbox('Inbox.RubyMail');
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Get the complete set of Uids for email in the selected mailbox.
messageSet := TMessageSet.Create(Self);
success := imap.QueryMbx('ALL',1,messageSet.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Set the Deleted flag for each message.
// (ExpungeAndClose must be called to finalize the delete.)
success := imap.SetFlags(messageSet.ControlInterface,'Deleted',1);
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Alternatively, the Deleted flag may be set for each UID
// individiually, but this is less efficient:
i := 0;
n := messageSet.Count;
while i < n do
  begin
    success := imap.SetFlag(messageSet.GetId(i),messageSet.HasUids,'Deleted',1);
    if (success = 0) then
      begin
        Memo1.Lines.Add(imap.LastErrorText);
        Exit;
      end;
    i := i + 1;
  end;

// Expunge and close the mailbox.
success := imap.ExpungeAndClose();
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

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

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