Using Gmail Account to Send Emails With Attachment

The following piece of code will let you send email using the Google server. Just replace the network credentials with your Google user name and password.

private void button_send_Click(object sender, EventArgs e)
{
    //Short Method
            
    SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587);
    smtp.UseDefaultCredentials = false;
    smtp.Credentials = new NetworkCredential("username","password");
    smtp.EnableSsl = true;
    smtp.Send("sender@gamil.com", "receiver", "subject", "Email Body");
 
    //Detailed Method
            
    MailAddress mailfrom = new MailAddress("sender@gmail.com");
    MailAddress mailto = new MailAddress("receiver@abc.com");
    MailMessage newmsg = new MailMessage(mailfrom, mailto);
 
    newmsg.Subject = "Subject of Email";
    newmsg.Body = "Body(message) of email";
 
    //For File Attachment, more file can also be attached

    Attachment att = new Attachment("C:\\...file path");
    newmsg.Attachments.Add(att);
 
    SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587);
    smtp.UseDefaultCredentials = false;
    smtp.Credentials = new NetworkCredential("username","password");
    smtp.EnableSsl = true;
    smtp.Send(newmsg);    
}

 

I have kept the code simple, using or try-catch blocks can be added as per need.
Have a nice time. Do give suggestions and comments.
 
Note: Before providing the credentials, you need to set UserDefaultCredentials to false. The above mentioned settings are for Gmail, but you can also use other SMTP servers.