Simplest Way of Sending Email from Gmail

protected void btnSendEmail_Click(object sender, EventArgs e)

{

//Create Mail Message Object with content that you want to send with mail.

System.Net.Mail.MailMessage MyMailMessage = new System.Net.Mail.MailMessage("dotnetguts@gmail.com","myfriend@yahoo.com",

"This is the mail subject", "Just wanted to say Hello");



MyMailMessage.IsBodyHtml = false;



//Proper Authentication Details need to be passed when sending email from gmail

System.Net.NetworkCredential mailAuthentication = new

System.Net.NetworkCredential("dotnetguts@gmail.com", "myPassword");



//Smtp Mail server of Gmail is "smpt.gmail.com" and it uses port no. 587

//For different server like yahoo this details changes and you can

//get it from respective server.

System.Net.Mail.SmtpClient mailClient = new System.Net.Mail.SmtpClient("smtp.gmail.com",587);



//Enable SSL

mailClient.EnableSsl = true;



mailClient.UseDefaultCredentials = false;



mailClient.Credentials = mailAuthentication;



mailClient.Send(MyMailMessage);

}