SmtpClient Constructor

Initializes a new instance of the SmtpClient class by using configuration file settings.

Namespace:  System.Net.Mail
Assembly:  System (in System.dll)

public SmtpClient()

This constructor initializes the Host, Credentials, and Port properties for the new SmtpClient by using the settings in the application or machine configuration files. For more information, see <mailSettings> Element (Network Settings).

The following code example demonstrates sending an e-mail message.


		public static void CreateTestMessage3()
		{
			MailAddress to = new MailAddress("jane@contoso.com");
			MailAddress from = new MailAddress("ben@contoso.com");
			MailMessage message = new MailMessage(from, to);
			message.Subject = "Using the new SMTP client.";
			message.Body = @"Using this new feature, you can send an e-mail message from an application very easily.";
			// Use the application or machine configuration to get the 
			// host, port, and credentials.
			SmtpClient client = new SmtpClient();
			Console.WriteLine("Sending an e-mail message to {0} at {1} by using the SMTP host={2}.",
				to.User, to.Host, client.Host);
      try {
			  client.Send(message);
			}
			catch (Exception ex) {
			  Console.WriteLine("Exception caught in CreateTestMessage3(): {0}", 
                    ex.ToString() );			  
		  }
		}


For an example of the <mailSettings> node in the application or machine configuration file, see <mailSettings> Element (Network Settings).

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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