(Objective-C) Copy an Email from One Mailbox to Another

Copies an email from one IMAP folder to another. After running this example, copies of the email will be present in both source and destination folders.

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#import <CkoImap.h>
#import <CkoMessageSet.h>

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

// This example copies an email from one mailbox to another.
CkoImap *imap = [[CkoImap alloc] init];

// Turn on session logging:
imap.KeepSessionLog = YES;

// Connect to an IMAP server.
// Use TLS
imap.Ssl = YES;
imap.Port = [NSNumber numberWithInt:993];
BOOL success = [imap Connect: @"imap.someMailServer.com"];
if (success != YES) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Login
success = [imap Login: @"***" password: @"***"];
if (success != YES) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Select an IMAP mailbox
success = [imap SelectMailbox: @"Inbox.testing.a"];
if (success != YES) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

CkoMessageSet *messageSet = 0;
BOOL fetchUids = YES;

// Get the message IDs for all emails having "Re:" in the subject.
messageSet = [imap Search: @"SUBJECT Re:" bUid: fetchUids];
if (imap.LastMethodSuccess != YES) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Copy the messages from "Inbox.testing.a" to "Inbox.testing.b" in one call to CopyMultiple:
success = [imap CopyMultiple: messageSet copyToMailbox: @"Inbox.testing.b"];
if (success != YES) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Alternatively, loop over each message in the set and
// copy each separately:
int i;
int n;
n = [messageSet.Count intValue];
if (n > 0) {
    for (i = 0; i <= n - 1; i++) {
        int msgId = [[messageSet GetId: [NSNumber numberWithInt: i]] intValue];
        BOOL isUid = messageSet.HasUids;
        success = [imap Copy: [NSNumber numberWithInt: msgId] bUid: isUid copyToMailbox: @"Inbox.testing.c"];
        if (success != YES) {
            NSLog(@"%@",imap.LastErrorText);
            return;
        }

    }

}

// Display the session log.
NSLog(@"%@",imap.SessionLog);

// Disconnect from the IMAP server.
success = [imap Disconnect];