POP3 to SMTP Forwarder

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Read a POP3 mailbox and forwards the email to another email address, keeping the recipients in the original email the same.

//  The mailman object is used for receiving (POP3)
//  and sending (SMTP) 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 POP3 server's hostname
mailman.MailHost = "mail.chilkatsoft.com";

//  Set the POP3 login/password.
mailman.PopUsername = "matt@chilkatsoft.com";
mailman.PopPassword = "****";

Chilkat.StringArray saUidls = null;

//  The the UIDLs for all email in the POP3 mailbox.
saUidls = mailman.GetUidls();
if (saUidls == null ) {
    MessageBox.Show(mailman.LastErrorText);
    return;
}

Chilkat.StringArray saMime = null;

//  Download the email from the server.  Call FetchMultipleMime
//  because we don't want to load the emails into email objects.
//  (We'll delete the emails that are forwarded without error.)
saMime = mailman.FetchMultipleMime(saUidls);

if (saMime == null ) {

    MessageBox.Show(mailman.LastErrorText);
    return;
}

//  Set the SMTP hostname for sending.
mailman.SmtpHost = "mail.chilkatsoft.com";
mailman.SmtpUsername = "admin@chilkatsoft.com";
mailman.SmtpPassword = "****";

int i;
string strMime;
int n;
n = saMime.Count;

string fromAddr;
string toAddr;
fromAddr = "matt@chilkatsoft.com";
toAddr = "admin@chilkatsoft.com";

bool bAllOk;
bAllOk = true;

if (n > 0) {
    for (i = 0; i <= n - 1; i++) {

        strMime = saMime.GetString(i);

        //  Forward the email.
        success = mailman.SendMime(fromAddr,toAddr,strMime);
        if (success != true) {
            bAllOk = false;
            textBox1.Text += mailman.LastErrorText + "\r\n";
            break;
        }

    }

}

//  Remove the emails in saUidls from the POP3 server.
if (bAllOk == true) {
    success = mailman.DeleteMultiple(saUidls);
    if (success != true) {
        textBox1.Text += mailman.LastErrorText + "\r\n";
    }

}