(C# UWP/WinRT) IMAP STARTTLS (Explicit TLS/SSL)

The StartTls property is set to force the Connect method to automatically convert an connection to TLS/SSL via the STARTTLS IMAP command.

This is also known as "explicit TLS/SSL" as opposed to "implicit TLS/SSL". With implicit TLS/SSL, the IMAP client connects on the well-known IMAP TLS/SSL port 993 and the secure channel is immediately established. With explicit TLS/SSL, the IMAP client connects on the typical non-secure port (143 usually) and the converts the connection via the STARTTLS command.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Imap imap = new Chilkat.Imap();

// Indicate that STARTTLS should be used to convert
// to a secure TLS/SSL connection:
imap.StartTls = true;
imap.Port = 143;

// Connect to an IMAP server and convert the connection
// to TLS/SSL via STARTTLS.
bool success = await imap.ConnectAsync("imap.someMailServer.com");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// The remainder of this example is the same as for 
// non-TLS/SSL...

// Login
success = await imap.LoginAsync("myLogin","myPassword");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Select an IMAP mailbox
success = await imap.SelectMailboxAsync("Inbox");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

Chilkat.MessageSet messageSet = null;
// We can choose to fetch UIDs or sequence numbers.
bool fetchUids = true;
// Get the message IDs of all the emails in the mailbox
messageSet = await imap.SearchAsync("ALL",fetchUids);
if (imap.LastMethodSuccess == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Fetch the emails into a bundle object:
Chilkat.EmailBundle bundle = null;
bundle = await imap.FetchBundleAsync(messageSet);
if (imap.LastMethodSuccess == false) {

    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Loop over the bundle and display the FROM and SUBJECT of each.
int i = 0;
int numEmails = bundle.MessageCount;
while (i < numEmails) {
    Chilkat.Email email = bundle.GetEmail(i);
    Debug.WriteLine(email.From);
    Debug.WriteLine(email.Subject);
    Debug.WriteLine("--");

    i = i + 1;
}

// Disconnect from the IMAP server.
success = await imap.DisconnectAsync();