unit1.~pas

IdSmtp IdMessage TdOpenDialog

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, IdMessage, IdBaseComponent, IdComponent,
  IdTCPConnection, IdTCPClient, IdMessageClient, IdSMTP, ExtCtrls;

type
  TForm1 = class(TForm)
    SMTP1: TIdSMTP;
    IdMsg: TIdMessage;
    Button1: TButton;
    Edit1: TEdit;
    Edit2: TEdit;
    Label3: TLabel;
    Memo1: TMemo;
    Edit3: TEdit;
    Button2: TButton;
    Label6: TLabel;
    Edit4: TEdit;
    Label7: TLabel;
    Edit5: TEdit;
    Label8: TLabel;
    Edit6: TEdit;
    OpenDialog1: TOpenDialog;
    Edit7: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Button3: TButton;
    Label9: TLabel;
    ComboBox1: TComboBox;
    Button4: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin

if SMTP1.Connected then
   begin
     IdMsg.body.Clear;
     IdMsg.Body.Assign(memo1.lines);
     IdMsg.From.address := edit5.text;
     IdMsg.Recipients.EMailAddresses :=edit6.text;
     IdMsg.Subject:=edit4.text
   end
else
  begin
  Showmessage('连接SMTP服务器失败!');
    Exit;
    end;
try
  SMTP1.Send(IdMsg);
finally
  showmessage('您的信件已成功发送');
  SMTP1.Disconnect;
end;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
if opendialog1.Execute then
ComboBox1.Items.Add(OpenDialog1.FileName);
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
   close;
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
  SMTP1.AuthenticationType := atLogin;
  if edit3.text<>'' then//当服务器地址不为空时
    begin
      if SMTP1.Connected then
      begin
      SMTP1.Disconnect();//如果已连接服务器则断开
      showmessage('断开连接！');//给出断开连接提示
      end
      else
        begin
         SMTP1.Host:=edit3.Text; //连接主机的地址
         SMTP1.Username:=edit2.Text;
         SMTP1.Password:=edit1.Text;
         SMTP1.Port:=25;
        try
         SMTP1.Connect();//连接主机
         showmessage('连接成功！');//给出连接成功提示
        except
         showmessage('连接失败！');//给出连接失败提示
      end;
  end;
end
  else
    showmessage('警告：主机不能为空！');
end;

end.