Verify Email Addresses with VerifyRecipients

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Verify email recipients. This example demonstrates the usage of the VerifyRecipients method.

Please see this blog post for more information VerifyRecipients -- Validating Email Addresses

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

//  Any string argument automatically begins the 30-day trial.
bool success;
success = mailman.UnlockComponent("30-day trial");
if (success != true) {
    MessageBox.Show("Component unlock failed");
    return;
}

//  Set the SMTP server.
//  This code was tested against both mail.chilkatsoft.com
//  and smtp.comcast.net

//  mailman.SmtpHost = "mail.chilkatsoft.com";
//  mailman.SmtpUsername = "admin@chilkatsoft.com";
//  mailman.SmtpPassword = "****";

mailman.SmtpHost = "smtp.comcast.net";

//  Create an email object.
//  We'll never actually send this email.  It's only used
//  to test the recipients.
Chilkat.Email email = new Chilkat.Email();

email.Subject = "This is a test";
email.Body = "This is a test";
email.From = "Chilkat Support <support@chilkatsoft.com>";

//  Add recipients to be checked.
//  (When this was tested, a_real_person was replaced with
//  a valid email address.)
email.AddTo("A Real Person","a_real_person@comcast.net");
email.AddTo("Testing","doesNotExist7434@comcast.net");
email.AddTo("Admin","admin@chilkatsoft.com");
email.AddTo("Not Exist","doesNotExist@chilkatsoft.com");
email.AddCC("Not Exist","DoesNotExist7213@gmail.com");
email.AddBcc("Exists","chilkat.support@gmail.com");

//  NOTE: A mail server can only verify the email addresses
//  specific to it's domain.  Therefore, when using smtp.comcast.net,
//  only comcast.net email addresses will be flagged as invalid,
//  and when using mail.chilkatsoft.com, only chilkatsoft.com
//  email addresses are flagged as invalid.

//  Add all bad email addresses to saBadAddrs:
Chilkat.StringArray saBadAddrs = new Chilkat.StringArray();
success = mailman.VerifyRecipients(email,saBadAddrs);
if (success != true) {
    MessageBox.Show(mailman.LastErrorText);

}
else {
    //  List the invalid email addresses:
    if (saBadAddrs.Count > 0) {
        int i;
        int n;
        n = saBadAddrs.Count;
        for (i = 0; i <= n - 1; i++) {
            textBox1.Text += saBadAddrs.GetString(i) + "\r\n";
        }

        //  Examine the SMTP session log to see how the email
        //  addresses were caught:
        MessageBox.Show(mailman.SmtpSessionLog);
    }
}