Send Mail Using Gmail, Yahoo Account in VB.Net and C#.Net

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Net;

namespace SendEmailCS

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

public void Button1_Click(System.Object sender, System.EventArgs e)

{

string str="";

Boolean state=false;

if (right (txtfrom .Text ,9)=="gmail.com")

{

str = "smtp.gmail.com";

state =true ;

}

else if (right (txtfrom .Text ,9)=="yahoo.com")

{

str = "smtp.mail.yahoo.com";

state = false ;

}

System.Net.Mail.MailAddress From = new System.Net.Mail.MailAddress(txtfrom.Text);

System.Net.Mail.MailAddress To = new System.Net.Mail.MailAddress(txtto.Text);

System.Net.Mail.MailMessage Message = new System.Net.Mail.MailMessage(From, To);

Message.Subject = txtsub.Text;

Message.Body = txtmess.Text;

Message.Attachments.Add(new System.Net.Mail.Attachment(openFileDialog1.FileName.ToString()));

System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient(str);

client.EnableSsl = Convert .ToBoolean (state );

client.Credentials = new System.Net.NetworkCredential(txtfrom.Text, txtpass.Text);

client.Send(Message);

MessageBox.Show("Send Email Successfully");

}

public string right(string param, int length)

{

string result = param.Substring(param.Length - length, length);

return result;

}

private void Label5_Click_1(object sender, EventArgs e)

{

openFileDialog1.ShowDialog();

}

private void openFileDialog1_FileOk(object sender, CancelEventArgs e)

{

txtatt.Text = openFileDialog1.FileName.ToString();

}

}

}

This article helps you to send an Email using a Gmail or Yahoo acount.