Specifies that the URI is an e-mail address and is accessed through the Simple Mail Transport Protocol (SMTP).
using System;
publicclass MainClass{
publicstaticvoid Main(){
Uri address3 = new Uri("mailto:user@yourDomain.com?subject=uri");
if (address3.Scheme == Uri.UriSchemeMailto)
Console.WriteLine("Uri is an email address");
}
}