Java

Send Encrypted Email to Multiple Recipients

Demonstrates how to create and send an S/MIME encrypted email to multiple recipients. The digital certificate of each recipient is required. The encrypting/sending process uses each recipient's digital certificate (which internally contains the public key). Each recipient decrypts the received email using his/her private key. Chilkat2 Java

import com.chilkatsoft.chilkat2.Cert;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Email;
import com.chilkatsoft.chilkat2.MailMan;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // The mailman object is used for sending and receiving email.
        MailMan mailman = new MailMan();

        // Set the SMTP server.
        mailman.setSmtpHost("smtp.mymailserver.com");

        // Load each recipient's certificate into a Chilkat certificate object.
        // This example loads the certificates from files.  However, the Chilkat
        // certificate object provides other means for loading certificates,
        // such as from in-memory PEM strings, or in-memory binary DER encoded form, etc.
        Cert cert1 = new Cert();
        try {
            cert1.loadFromFile("recipient1.cer");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        Cert cert2 = new Cert();
        try {
            cert2.loadFromFile("recipient2.cer");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        Cert cert3 = new Cert();
        try {
            cert3.loadFromFile("recipient3.cer");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Create a new email object
        Email email = new Email();

        email.setSubject("This email is encrypted and sent to 3 recipients");
        email.setBody("This is an S/MIME encrypted mail sent to 3 recipients");
        email.setFrom("Chilkat Support <support@chilkatsoft.com>");

        // Make each of the certificates available for encrypting the email
        // by calling AddEncryptCert for each.
        try {
            email.addEncryptCert(cert1);
            email.addEncryptCert(cert2);

            email.addEncryptCert(cert3);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Add 3 recipients to the email (2 TO addresses, and 1 CC address)
        email.addTo("Recipient 1", "admin@cknotes.com");
        email.addTo("Recipient 2", "somebody001122@yahoo.com");
        email.addCC("Recipient 3", "somebody123xyz@gmail.com");

        // Indicate that the email is to be sent encrypted.
        email.setSendEncrypted(true);

        // Send the encrypted email...
        try {
            mailman.sendEmail(email);
            System.out.println("Encrypted Email Sent!");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
        }
    }
}