Fetching the inbox count on POP?

[AndrewHartAR]

I want to get the newest 10 messages from the inbox of the user. On IMAP, I do this like so:

MCOIMAPSession *session = [[MCOIMAPSession alloc] init];
[session setHostname:@"imap.gmail.com"];
[session setPort:993];
[session setUsername:@"email@address.com"];
[session setPassword:@"password"];
[session setConnectionType:MCOConnectionTypeTLS];

NSString *folder = @"INBOX";
MCOIMAPFolderInfoOperation *infoOperation = [session folderInfoOperation:folder];

[infoOperation start:^(NSError *error, MCOIMAPFolderInfo *info) {
 if (!error) {
 NSLog(@"message count: %i", info.messageCount);
 int messageCount = info.messageCount;

 MCOIMAPMessagesRequestKind requestKind = MCOIMAPMessagesRequestKindHeaders;
 MCOIndexSet *uids = [MCOIndexSet indexSetWithRange:MCORangeMake(MAX(messageCount - 10, 1), messageCount)];
 MCOIMAPFetchMessagesOperation *fetchOperation = [session fetchMessagesByUIDOperationWithFolder:folder requestKind:requestKind uids:uids];

 [fetchOperation start:^(NSError * error, NSArray * fetchedMessages, MCOIndexSet * vanishedMessages) {
 //We've finished downloading the messages!

 //Let's check if there was an error:
 if(!error) {
 //And, let's print out the messages...
 for (MCOAbstractMessage *message in fetchedMessages) {
 NSLog(@"message: %@", message);
 [self.storedMail addObject:message.header];
 }

 self.numberOfMailboxesReturned++;
 }
 }];
 }
}];

On IMAP I can run a MCOIMAPFolderInfoOperation, but there doesn't seem to be an equivelant for POP3. How would I go about getting the last 10 items on POP3?

[dinhvh]

On POP3, you should fetch the list of messages and get the number of items.

[AndrewHartAR]

The problem is that if the user has, say, 10000 items in their inbox, I don't want to have to download 10000 items to do that. What's the most efficient way of downloading those items, to get the bare minimum of information from them, or no information at all other than their existence?

[dinhvh]

You can use this call:

• (MCOPOPFetchMessagesOperation *) fetchMessagesOperation;

[AndrewHartAR]

Ah, I got it. Is there any way to know if a message is unread on POP3?

[dinhvh]

There's no notion of unread messages on POP3.