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ivan  
#1 Posted : Monday, March 28, 2011 6:53:54 PM(UTC)
ivan

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C# Example
// The following example codes demonstrate signing email with digital signature - S/MIME
// To get full sample projects, please download and install EASendMail on your machine.
// To run it correctly, please change SMTP server, user, password, sender, recipient value to yours

Code:

using System; 
using System.Collections.Generic; 
using System.Text; 

// Add EASendMail namespace
using EASendMail; 

namespace mysendemail 
{ 
    class Program 
    { 
        static void Main(string[] args) 
        { 
            SmtpMail oMail = new SmtpMail("TryIt"); 
            SmtpClient oSmtp = new SmtpClient(); 

            // Set sender email address, please change it to yours
            oMail.From = "test@emailarchitect.net"; 

            // Set recipient email address, please change it to yours
            oMail.To = "support@emailarchitect.net"; 

            // Set email subject
            oMail.Subject = "test email with digital signature"; 

            // Set email body
            oMail.TextBody = "this is a test email with digital signature"; 

            // Your smtp server address
            SmtpServer oServer = new SmtpServer("smtp.emailarchitect.net"); 

            // User and password for ESMTP authentication, if your server doesn't require
            // User authentication, please remove the following codes.
            oServer.User = "test@emailarchitect.net"; 
            oServer.Password = "testpassword"; 

            try 
            { 
                // Find certificate by email adddress in My Personal Store.
                // Once the certificate is loaded to From, the email content
                // will be signed automatically
                oMail.From.Certificate.FindSubject(oMail.From.Address, 
                    Certificate.CertificateStoreLocation.CERT_SYSTEM_STORE_CURRENT_USER, 
                    "My"); 
            } 
            catch (Exception exp) 
            { 
                Console.WriteLine("No sign certificate found for <" + 
                    oMail.From.Address + ">:" + exp.Message); 
            } 

            // If your smtp server requires SSL connection, please add this line
            // oServer.ConnectType = SmtpConnectType.ConnectSSLAuto;

            try 
            { 
                Console.WriteLine("start to send email with digital signature ..."); 
                oSmtp.SendMail(oServer, oMail); 
                Console.WriteLine("email was sent successfully!"); 
            } 
            catch (Exception ep) 
            { 
                Console.WriteLine("failed to send email with the following error:"); 
                Console.WriteLine(ep.Message); 
            } 
        } 
    } 
} 

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