Sending Email via SMTP

[Matt]

This will show you how to utilize official SMTP (Simple Mail Transfer Protocol) servers to send emails in your C# applications. All you need is a Hotmail, Yahoo, or Gmail email account.

First, declare the usage of the System.Text and System.Net.Mail namespaces in your respective class.

Then, create an object of the SmtpClient type.

var client = new SmtpClient();

client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential("Sending Email Account Address", "Sending Email Account Password");

Now, set the host and the port of your SmtpClient.

client.EnableSsl = false;
client.Host = ip;
client.Port = port;

Use this as a reference for such information.

HOTMAIL: Maximum outgoing = 300 per day
Port = 25 OR 465
Host = smtp.live.com (it seems to be down)
Ssl = true

GMAIL: Maximum outgoing = 500 per day
Port = 465
Host = smtp.gmail.com
Ssl = false;

YAHOO: Maximum outgoing = 500 per day
Port = 465
Host = smtp.mail.yahoo.com
Ssl = false

Now that we have our client all finished, we can begin to compose our email.

var message = new MailMessage();

message.From = new MailAddress("sending email address");
message.To.Add("sending email");
message.Body = "The email itself";
message.Subject = "Subject of the email";

message.BodyEncoding = UTF8Encoding.UTF8;

If you want to receive an email when the email fails, we can do that too.

message.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;

All that's left to do is send the message.

client.Send(message);

[jcsnider]

Let the homegrown spam bots begin!

But for real though, nice tutorial. I find myself looking for this code about once a year lol.

[Richy]

Definitely cool, and even can be used in games for reform/registration purposes.