(Objective-C) Download MIME Source of Emails in IMAP Mailbox

Demonstrates how to download the MIME source for emails on an IMAP server.

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

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#import <CkoImap.h>
#import <CkoStringBuilder.h>

BOOL success = NO;

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

CkoImap *imap = [[CkoImap alloc] init];

// Connect to an IMAP server.
// Use TLS
imap.Ssl = YES;
imap.Port = [NSNumber numberWithInt:993];
success = [imap Connect: @"imap.example.com"];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Login
success = [imap Login: @"myLogin" password: @"myPassword"];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Select an IMAP mailbox
success = [imap SelectMailbox: @"Inbox"];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// The NumMessages property contains the number of messages in the selected mailbox.
int numMessages = [imap.NumMessages intValue];
if (numMessages == 0) {
    NSLog(@"%@",@"No messages exist in the Inbox.");
    return;
}

CkoStringBuilder *sbMime = [[CkoStringBuilder alloc] init];
int seqNum;
for (seqNum = 1; seqNum <= numMessages; seqNum++) {
    [sbMime Clear];
    success = [imap FetchSingleAsMimeSb: seqNum bUid: NO sbMime: sbMime];
    if (success == NO) {
        NSLog(@"%@",imap.LastErrorText);
        return;
    }

    // The MIME source of the downloaded email is contained in sbMime.
}

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