(C#) Move Selected Emails to another Mailbox Folder

Downloads emails one by one in a selected mailbox, decides which emails are to be moved, and then moves the set of messages to another mailbox folder.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

// This example requires 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 = imap.Connect("imap.someMailServer.com");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

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

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

// Normally, when an email is downloaded, its "Seen" flag is automatically set.
// We don't want our program to be interfering with the "Seen" flags.
// To do this, set the PeekMode to true.
imap.PeekMode = true;

// After selecting the mailbox, the NumMessages property
// will contain the number of emails in the mailbox.
// When sequence numbers (not UIDs) are used to reference emails,
// they range from 1 to N, where N is the number of messages in the mailbox.
// This example will download the headers by sequence numbers.
int numEmails = imap.NumMessages;

Chilkat.MessageSet mset = new Chilkat.MessageSet();

// Indicate that mset contains sequence numbers, not UIDs.
mset.HasUids = false;

// Fetch each email and decide for each if it is to be moved
// to a particular other mailbox.  If so, we'll add the sequence number to
// the mset, and then move all emails in the mset to the other mailbox.
int i = 0;
while (i < numEmails) {
    // Fetch the email by sequence number.
    Chilkat.Email email = imap.FetchSingle(i + 1,false);
    if (imap.LastMethodSuccess != true) {
        Debug.WriteLine(imap.LastErrorText);
        return;
    }

    // If it is decided to move the email, add the sequence number to mset, like this:
    mset.InsertId(i + 1);

}

// If there are emails in mset to be moved, then do it..
if (mset.Count > 0) {
    string destFolder = "Inbox/SomeOtherFolder";
    // Assuming your IMAP server supports the feature that allows for messages to be moved to another folder...
    success = imap.MoveMessages(mset,destFolder);
    if (success != true) {
        Debug.WriteLine(imap.LastErrorText);
        return;
    }

}

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