Sending email in .NET through Gmail

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using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Net;

using System.Net.Mail;

 

namespace SendMailCSharp

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

 

        private void button1_Click(object sender, EventArgs e)

        {

            var fromAddress = new MailAddress("from@gmail.com", "From Name");

            var toAddress = new MailAddress("to@example.com", "To Name");

            const string fromPassword = "fromPassword";

            const string subject = "Subject";

            const string body = "Body";

 

            var smtp = new SmtpClient

            {

                Host = "smtp.gmail.com",

                Port = 587,

                EnableSsl = true,

                DeliveryMethod = SmtpDeliveryMethod.Network,

                UseDefaultCredentials = false,

                Credentials = new NetworkCredential(fromAddress.Address, fromPassword)

            };

            using (var message = new MailMessage(fromAddress, toAddress)

            {

                Subject = subject,

                Body = body

            })

            {

                string aMsg;

                try

                {

                    smtp.Send(message);

                    aMsg = "テストメールを送信しました。";

                }

                catch

                {

                    aMsg = "テストメールを送信に失敗しました。";

                }

                MessageBox.Show(aMsg);               

            }

        }

    }

}