(Swift 3,4,5...) IMAP Delete Old Email (before a specified date)

Demonstrates how to delete email older than a particular date.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes 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
    // Use your IMAP server domain.  This example 
    var success: Bool = imap.connect("my-imap-server-domain.com")
    if success != true {
        print("\(imap.lastErrorText!)")
        return
    }

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

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

    // Get message ID's for emails older than 1/1/2018
    var messageSet: CkoMessageSet?
    var fetchUids: Bool = true
    messageSet = imap.search("SENTBEFORE 01-Jan-2018", bUid: fetchUids)
    if imap.lastMethodSuccess == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // If desired, we can examine the Subject of each email to be deleted..
    var i: Int = 0
    var count: Int = messageSet!.count.intValue
    while i < count {
        var email: CkoEmail? = imap.fetchSingleHeader(messageSet!.getId(i).intValue, bUid: true)
        if imap.lastMethodSuccess == true {
            print("\(email!.subject!)")
            email = nil
        }

        i = i + 1
    }

    // Set the Deleted flag for each message:
    success = imap.setFlags(messageSet, flagName: "Deleted", value: 1)
    if success != true {
        print("\(imap.lastErrorText!)")
        messageSet = nil
        return
    }

    // Expunge and close the mailbox.
    success = imap.expungeAndClose()
    if success != true {
        print("\(imap.lastErrorText!)")
        messageSet = nil
        return
    }

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

    messageSet = nil

}