Delphi ActiveX

Delete Individual Emails from POP3 Mailbox

Demonstrates how to delete individual emails from a POP3 mailbox. 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;
mailman: TChilkatMailMan;
bundle: TChilkatEmailBundle;
keepOnServer: Integer;
headersOnly: Integer;
numBodyLines: Integer;
email: TChilkatEmail;
i: Integer;

begin
success := 0;

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

// The mailman object is used for receiving (POP3) 
// and sending (SMTP) email.
mailman := TChilkatMailMan.Create(Self);

// Set the POP3 server's hostname
mailman.MailHost := 'pop.example.com';

// Set the POP3 login/password.
mailman.PopUsername := 'myLogin';
mailman.PopPassword := 'myPassword';

// Set the ImmediateDelete property = 0
// When the DeleteEmail method is called, the POP3 session
// will remain open and the emails will be deleted all at once
// when the session closes.
mailman.ImmediateDelete := 0;

// Download email headers.  
bundle := TChilkatEmailBundle.Create(Self);
keepOnServer := 1;
headersOnly := 1;
numBodyLines := 1;
success := mailman.FetchAll(keepOnServer,headersOnly,numBodyLines,bundle.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

email := TChilkatEmail.Create(Self);
i := 0;
while i < bundle.MessageCount do
  begin
    bundle.EmailAt(i,email.ControlInterface);

    Memo1.Lines.Add('From: ' + email.From);
    Memo1.Lines.Add('Subject: ' + email.Subject);

    // If you decide the email is to be deleted, call DeleteEmail.
    // This marks the email for deletion on the POP3 server.
    success := mailman.DeleteEmail(email.ControlInterface);
    if (success = 0) then
      begin
        Memo1.Lines.Add(mailman.LastErrorText);
        Exit;
      end;

    i := i + 1;
  end;

// Make sure the POP3 session is ended to finalize the deletes.
success := mailman.Pop3EndSession();
if (success = 0) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

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