How to send email and check without real SMTP server.

To send email via SMTP server see next sample code

using System.Net.Mail;

using System.Text;

namespace email_functions

{

    class Program

    {

        static void Main(string[] args)

        {

            string host = "test.com";

            SmtpClient smtpClient;

            MailAddress sender;

            MailAddress recipient;

            smtpClient = new SmtpClient(host);

            smtpClient.Timeout = 3000;

            sender = new MailAddress("sender@test.com", "Sender");

            recipient = new MailAddress("recipient@test.com", "Recipient");

            MailMessage message = new MailMessage(sender, recipient);

            message.SubjectEncoding = Encoding.UTF8;

            message.Subject = "test Smtp";

            smtpClient.Send(message);

        }

    }

}

But if real SMTP server (in sample, "test.com") is not accessible, then next error will be shown:

To test sending email without real SMTP server it is suggested to add section to .config file:

Notes:

• Folder "c:\testEmailsFolder" should be created before email sending.
• After .config file changes a program should be restarted.

Now, when the sample will finished, then text file .eml will be creared in folder "c:\testEmailsFolder". The file can be opened in Windows Live Mail.

X-Sender: Sender 
X-Receiver: Recipient 
MIME-Version: 1.0
From: Sender 
To: Recipient 
Date: 6 Mar 2008 13:16:24 +0200
Subject: =?utf-8?B?dGVzdCBTbXRw?=

Additional Links:

SmtpClient..::.DeliveryMethod Property