(Swift) Delete Email Individually (One at a time) from an IMAP Mailbox

Downloads email from an IMAP mailbox and deletes emails individually (one by one).

Note: This example requires Chilkat v11.0.0 or greater.

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

func chilkatTest() {
    var success: Bool = false

    // 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
    success = imap.connect("imap.someMailServer.com")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

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

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

    // We can choose to fetch UIDs or sequence numbers.
    var fetchUids: Bool = true

    // Get the message IDs of all the emails in the mailbox
    let messageSet = CkoMessageSet()!
    success = imap.queryMbx("ALL", bUid: fetchUids, msgSet: messageSet)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Fetch the emails into a bundle object:
    let bundle = CkoEmailBundle()!
    var headersOnly: Bool = false
    success = imap.fetchMsgSet(headersOnly, msgSet: messageSet, bundle: bundle)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // To mark a complete set of emails for deletion, call SetFlags:
    success = imap.setFlags(messageSet, flagName: "Deleted", value: 1)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Messages can also be marked for deletion individually:
    // Loop over the bundle and mark each message for deletion.
    let email = CkoEmail()!
    var i: Int = 0
    var numEmails: Int = bundle.messageCount.intValue
    while i < numEmails {
        bundle.email(at: i, email: email)

        print("\(email.from!)")
        print("\(email.subject!)")

        // To delete this email, set the "Deleted" flag to 1.
        // The email is not actually deleted until Expunge or
        // ExpungeAndClose is called.
        success = imap.setMailFlag(email, flagName: "Deleted", value: 1)
        if success == false {
            print("\(imap.lastErrorText!)")
            return
        }

        print("--")

        i = i + 1
    }

    success = imap.expungeAndClose()
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

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

}