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MailMessage Constructor (String, String)

Note: This constructor is new in the .NET Framework version 2.0.

Initializes a new instance of the MailMessage class by using the specified String class objects.

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

public MailMessage (
	string from,
	string to
public MailMessage (
	String from, 
	String to
public function MailMessage (
	from : String, 
	to : String



A String that contains the address of the sender of the e-mail message.


A String that contains the addresses of the recipients of the e-mail message.

Exception typeCondition


from is a null reference (Nothing in Visual Basic).


to is a null reference (Nothing in Visual Basic).


from is Empty ("").


to is Empty ("").


from or to is malformed.

The From property is initialized using from and the To property is initialized using to.

The following code example demonstrates calling this constructor.

public static void CreateTestMessage2(string server)
    string to = "";
    string from = "";
    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.";
    SmtpClient client = new SmtpClient(server);
    // Credentials are necessary if the server requires the client 
    // to authenticate before it will send e-mail on the client's behalf.
    client.UseDefaultCredentials = true;

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0