(C# UWP/WinRT) Fetch Oldest/Newest IMAP Email

Emails may be downloaded by sequence number. Assuming the selected mailbox is not empty, the oldest email is at sequence number 1, and the newest email is at sequence number N. The FetchSingle method may be used to download by sequence number.

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();

// Connect to an IMAP server.
// Use TLS
imap.Ssl = true;
imap.Port = 993;
bool success = await imap.ConnectAsync("mail.testemail.net");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Login
success = await imap.LoginAsync("***","***");
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;
}

// After selecting a mailbox, the NumMessages property
// contains the number of emails in the selected mailbox.
int n;
n = imap.NumMessages;

if (n > 0) {

    // The oldest email is always at sequence number 1.
    bool isUid = false;

    Chilkat.Email oldestEmail = null;
    oldestEmail = await imap.FetchSingleAsync(1,isUid);
    if (imap.LastMethodSuccess == true) {

        // Display the From and Subject
        Debug.WriteLine(oldestEmail.FromAddress);
        Debug.WriteLine(oldestEmail.Subject);

        Debug.WriteLine("--");

    }

    // The newest email is at sequence number N:
    Chilkat.Email newestEmail = null;
    newestEmail = await imap.FetchSingleAsync(n,isUid);
    if (imap.LastMethodSuccess == true) {

        // Display the From and Subject
        Debug.WriteLine(newestEmail.FromAddress);
        Debug.WriteLine(newestEmail.Subject);

    }

}

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