(C#) How to Copy IMAP Mail to another IMAP Server

Demonstrates how to copy the entire contents of an IMAP mailbox to another IMAP server.

Note: This example requires Chilkat v11.0.0 or greater.

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bool success = false;

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

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

// Connect to our source IMAP server.
success = imapSrc.Connect("imap.example.com");
if (success == false) {
    Debug.WriteLine(imapSrc.LastErrorText);
    return;
}

// Login to the source IMAP server
success = imapSrc.Login("admin@chilkatsoft.com","myPassword");
if (success == false) {
    Debug.WriteLine(imapSrc.LastErrorText);
    return;
}

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

// Connect to our destination IMAP server.
success = imapDest.Connect("mail.example-code.com");
if (success == false) {
    Debug.WriteLine(imapDest.LastErrorText);
    return;
}

// Login to the destination IMAP server
success = imapDest.Login("myLogin","myPassword");
if (success == false) {
    Debug.WriteLine(imapDest.LastErrorText);
    return;
}

// Select an IMAP mailbox on the source IMAP server
success = imapSrc.SelectMailbox("Inbox");
if (success == false) {
    Debug.WriteLine(imapSrc.LastErrorText);
    return;
}

// After selecting a mailbox, the NumMessages property will
// be updated to reflect the total number of emails in the mailbox:
Debug.WriteLine(Convert.ToString(imapSrc.NumMessages));

// The emails in the mailbox will always have sequence numbers
// ranging from 1 to NumMessages.

// This example will copy the first 10 messages using sequence numbers
Chilkat.StringBuilder sbMime = new Chilkat.StringBuilder();
int seqNum;
for (seqNum = 1; seqNum <= 10; seqNum++) {
    sbMime.Clear();
    success = imapSrc.FetchSingleAsMimeSb(seqNum,false,sbMime);
    if (success == false) {
        Debug.WriteLine(imapSrc.LastErrorText);
        return;
    }

    success = imapDest.AppendMimeWithFlagsSb("Inbox",sbMime,false,false,false,false);
    if (success == false) {
        Debug.WriteLine(imapDest.LastErrorText);
        return;
    }

}

// Disconnect from the IMAP servers.
success = imapSrc.Disconnect();
success = imapDest.Disconnect();