How to find latest messageId in the mailcore?

[chaurasiawadh]

I have 25 Lakh mails in my Gmail account but I want only the latest 7 days message or latest 100 mails only. How can I do it?

function getMails

IndexSet indexSet = IndexSet.indexSetWithRange(new Range(1, Long.MAX_VALUE));
    final IMAPFetchMessagesOperation messagesOperation = imapSession.fetchMessagesByUIDOperation(folder,
            requestKind, indexSet);

I want only 100 mails to get:

IndexSet indexSet = IndexSet.indexSetWithRange(new Range(Long.MAX_VALUE-100, Long.MAX_VALUE));
    final IMAPFetchMessagesOperation messagesOperation = imapSession.fetchMessagesByUIDOperation(folder,
            requestKind, indexSet);

But it's not working

[tvPrincy]

let folder : String = "[Gmail]/All Mail" let folderInfo = retSession.folderInfoOperation(folder)

folderInfo?.start({ error, info in let messageCount = info?.messageCount ?? 0 let messageCountData = UInt64(messageCount)

                var latest = 100
                var lowerbound = messageCount

                let uidset = MCOIndexSet(range: MCORangeMake(UInt64(lowerbound) - UInt64(latest), UInt64(latest)))

                let fetchOperation = retSession.fetchMessagesByNumberOperation(
                    withFolder: folder,
                    requestKind: MCOIMAPMessagesRequestKind.fullHeaders,
                    numbers: uidset)

})

[haithngn]

@chaurasiawadh IMAP server does not provide any func to retrieve this kind of data, you must combine message count and next UID to construct the MailCore operation parameter for your purpose.