Swift

Determine the Number of Unseen Email Messages

Demonstrates how to determine how many unseen messages exist in an email account on an IMAP server. Swift

func chilkatTest() {
    var success: Bool = false

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

    let imap = CkoImap()!

    // Connect to an IMAP server.
    // Use TLS
    imap.ssl = true
    imap.port = 993
    success = imap.connect(hostname: "imap.example.com")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Login
    success = imap.login(login: "***", password: "***")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Select an IMAP mailbox
    success = imap.selectMailbox(mailbox: "Inbox")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // After selecting the mailbox. the total number of emails
    // is immediately available:
    var totalNum: Int = imap.numMessages.intValue
    print("Num messages = \(totalNum)")

    // To determine the number of unseen messages, a call
    // to Search is required, which returns the set of UIDs
    // of all unseen messages.

    // We can choose to fetch UIDs or sequence numbers.
    var fetchUids: Bool = true
    let messageSet = CkoMessageSet()!
    success = imap.queryMbx(criteria: "UNSEEN", bUid: fetchUids, msgSet: messageSet)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    var numUnseen: UInt32 = messageSet.count.intValue
    print("\(numUnseen)")

    print("UIDs ----")

    // Display the UIDs
    var i: Int = 0
    while i < messageSet.count.intValue {
        print("\(messageSet.getId(index: i))")
        i = i + 1
    }

    // Disconnect from the IMAP server.
    success = imap.disconnect()

}