Swift

Get IMAP UID from Email Header

See more IMAP Examples

Demonstrates how to get the IMAP UID from an email header. After fetching an email or header using IMAP, the UID is contained in the ckx-imap-uid header field. 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: "login", password: "password")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

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

    var fetchUids: Bool = true
    // Get the message UIDs of all the emails in the mailbox

    let messageSet = CkoMessageSet()!
    success = imap.queryMbx(criteria: "ALL", bUid: fetchUids, msgSet: messageSet)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    let bundle = CkoEmailBundle()!
    var headersOnly: Bool = true
    success = imap.fetchMsgSet(headersOnly: headersOnly, msgSet: messageSet, bundle: bundle)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // The UID of each fetched email header is available 
    // in the ckx-imap-uid header field.
    let email = CkoEmail()!
    let msgSet1 = CkoMessageSet()!
    var i: Int = 0
    var szBundle: Int = bundle.messageCount.intValue
    while i < szBundle {
        bundle.email(at: i, email: email)

        // Build a message set containing one UID
        var uidStr: String? = email.getHeaderField(fieldName: "ckx-imap-uid")
        msgSet1.fromCompactString(str: uidStr)

        // Move this message to some other folder.
        success = imap.moveMessages(messageSet: msgSet1, destFolder: "someOtherFolder")
        if success != true {
            print("\(imap.lastErrorText!)")
            // Exit the loop...
            i = szBundle
        }

        i = i + 1
    }

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

}