(C# UWP/WinRT) How to Copy IMAP Mail to another IMAP Server

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

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

// 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.
bool success = await imapSrc.ConnectAsync("imap.someMailServer.com");
if (success != true) {
    Debug.WriteLine(imapSrc.LastErrorText);
    return;
}

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

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

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

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

// Select an IMAP mailbox on the source IMAP server
success = await imapSrc.SelectMailboxAsync("Inbox");
if (success != true) {
    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.
// We'll leave it up to you to write code to copy
// the entire sequence range in reasonable size chunks.
int startSeqNum = 1;
int msgCount = 10;

Chilkat.StringArray sa = null;
sa = await imapSrc.FetchSequenceAsMimeAsync(startSeqNum,msgCount);
if (imapSrc.LastMethodSuccess != true) {
    Debug.WriteLine(imapSrc.LastErrorText);
    return;
}

int i;
for (i = 0; i <= sa.Count - 1; i++) {
    success = await imapDest.AppendMimeAsync("Inbox",sa.GetString(i));
    if (success != true) {
        Debug.WriteLine(imapDest.LastErrorText);
        return;
    }

}

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