(Objective-C) Read Gmail POP3 Mailbox

Reads the header for each email in a GMail POP3 mailbox and displays the FROM and SUBJECT header fields. In your GMail "Forwarding and POP" settings, be sure to select "When messages are accessed with POP keep Gmail's copy in the Inbox".

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

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#import <CkoMailMan.h>
#import <CkoEmailBundle.h>
#import <CkoEmail.h>

BOOL success = NO;

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

// The mailman object is used for receiving (POP3) 
// and sending (SMTP) email.
CkoMailMan *mailman = [[CkoMailMan alloc] init];

// Set the GMail account POP3 properties.
mailman.MailHost = @"pop.gmail.com";
mailman.PopUsername = @"myLogin";
mailman.PopPassword = @"myPassword";
mailman.PopSsl = YES;
mailman.MailPort = [NSNumber numberWithInt:995];

// Read mail headers and one line of the body.
// To get the full emails, set headersOnly = NO
CkoEmailBundle *bundle = [[CkoEmailBundle alloc] init];
BOOL keepOnServer = YES;
BOOL headersOnly = YES;
int numBodyLines = 1;
success = [mailman FetchAll: keepOnServer headersOnly: headersOnly numBodyLines: [NSNumber numberWithInt: numBodyLines] bundle: bundle];
if (success == NO) {
    NSLog(@"%@",mailman.LastErrorText);
    return;
}

int i = 0;
CkoEmail *email = [[CkoEmail alloc] init];
while (i < [bundle.MessageCount intValue]) {
    [bundle EmailAt: [NSNumber numberWithInt: i] email: email];

    // Display the From email address and the subject.
    NSLog(@"%@%@",@"From: ",email.From);
    NSLog(@"%@%@",@"Subject: ",email.Subject);

    i = i + 1;
}