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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, IdMultipartFormData, IdBaseComponent, IdComponent,
  IdTCPConnection, IdTCPClient, IdHTTP, StdCtrls;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Button1: TButton;
    IdHTTP1: TIdHTTP;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Label4: TLabel;
    IdTCPClient1: TIdTCPClient;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  data: TIdMultiPartFormDataStream;
begin
  data := TIdMultiPartFormDataStream.Create;
  try
    { add the used parameters for the script }
    data.AddFormField('zu', Edit3.Text);
    data.AddFormField('betreff', Edit1.Text);
    data.AddFormField('text', Memo1.text);
data.AddFormField('von', Edit2.Text);

    { Call the Post method of TIdHTTP and read the result into TMemo }
    Memo1.Lines.Text := form1.IdHTTP1.Post('http://www.pup-boaard.de/mail.php', data);
  finally
    data.Free;
end;

end;

end.					

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<?php
$text = stripslashes($text);
mail("$zu","$betreff","
$text",
"From: $von
Content-Type: text/html");
echo("E-Mail erfolgreich gesendet");
?>