Hello everybody,

sometime people ask me how to send email from C# windows forms application or even ask is it possible at all to accomplish in C#?

I can reassure you that yes, it's possible. 

For this purpose you can use following code sample:

private void btnSendMessage_Click(object sender, EventArgs e)
{
            var from = new MailAddress(txtFrom.Text, "From Name");
            var toEmail = new MailAddress(txtTo.Text, "To Name");
            string passwordFromEmailOfSender = txtPassword.Text;
            string subject = "Subject";
            string body = txtMessage.Text;

            var smtp = new SmtpClient
            {
                Host = "smtp.gmail.com",
                Port = 587,
                EnableSsl = true,
                DeliveryMethod = SmtpDeliveryMethod.Network,
                UseDefaultCredentials = false,
                Credentials = new NetworkCredential(from.Address, passwordFromEmailOfSender)
            };
            using (var message = new MailMessage(from, toEmail)
            {
                Subject = subject,
                Body = body
            })
            {
                smtp.Send(message);
            }

}

If you'll execute program and fill some data you can see something like this:

If your mailbox is from yahoo, you will see something similar to this:

Also you can use presented code for making mass sending of some needed information for your business.